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new fd1433954 AVRO-3666: [JAVA] Separate parsing from Schema class (#2513)
fd1433954 is described below
commit fd1433954f8344ffa433a42734e0dce1cd71deea
Author: Oscar Westra van Holthe - Kind <[email protected]>
AuthorDate: Fri Dec 1 12:01:13 2023 +0100
AVRO-3666: [JAVA] Separate parsing from Schema class (#2513)
This allows using pluggable parser implementations, allowing multiple
formats to be parsed with the same code.
This includes the use of NameValidator and parsing multiple files with
circular references between them.
---
.editorconfig | 2 +
.mvn/extensions.xml | 2 +-
.../++version++/Getting started (Java)/_index.md | 6 +-
.../org/apache/avro/FormattedSchemaParser.java | 77 +++++
.../java/org/apache/avro/JsonSchemaParser.java | 82 +++++
.../main/java/org/apache/avro/NameValidator.java | 104 ++++++
.../main/java/org/apache/avro/ParseContext.java | 234 +++++++++++++
.../avro/src/main/java/org/apache/avro/Schema.java | 99 +-----
.../main/java/org/apache/avro/SchemaParser.java | 249 ++++++++++++++
.../java/org/apache/avro/file/DataFileStream.java | 3 +-
.../java/org/apache/avro/util/SchemaResolver.java | 367 +++++++++++++++++++++
.../java/org/apache/avro/util}/SchemaVisitor.java | 24 +-
.../main/java/org/apache/avro/util}/Schemas.java | 13 +-
.../java/org/apache/avro/util/UtfTextUtils.java | 247 ++++++++++++++
.../java/org/apache/avro/DummySchemaParser.java | 53 +++
.../java/org/apache/avro/ParseContextTest.java | 124 +++++++
.../org/apache/avro/SchemaNameValidatorTest.java | 44 +--
.../java/org/apache/avro/TestDataFileReader.java | 6 +-
.../src/test/java/org/apache/avro/TestSchema.java | 6 +-
.../java/org/apache/avro/TestSchemaBuilder.java | 2 +-
.../java/org/apache/avro/TestSchemaParser.java | 107 ++++++
.../java/org/apache/avro/reflect/TestReflect.java | 5 +-
.../org/apache/avro/util}/TestSchemaResolver.java | 41 ++-
.../java/org/apache/avro/util}/TestSchemas.java | 20 +-
.../org/apache/avro/util/UtfTextUtilsTest.java | 132 ++++++++
.../services/org.apache.avro.FormattedSchemaParser | 18 +
lang/java/build.sh | 3 +-
lang/java/idl/pom.xml | 1 +
.../src/main/java/org/apache/avro/idl/IdlFile.java | 27 +-
.../main/java/org/apache/avro/idl/IdlReader.java | 133 ++++----
.../java/org/apache/avro/idl/IdlSchemaParser.java | 45 +++
.../apache/avro/idl/IsResolvedSchemaVisitor.java | 60 ----
.../java/org/apache/avro/idl/ResolvingVisitor.java | 192 -----------
.../java/org/apache/avro/idl/SchemaResolver.java | 149 ---------
.../org/apache/avro/idl/SchemaVisitorAction.java | 40 ---
.../services/org.apache.avro.FormattedSchemaParser | 18 +
.../java/org/apache/avro/idl/IdlReaderTest.java | 4 +-
.../test/java/org/apache/avro/idl/TestCycle.java | 11 +-
.../src/test/java/org/apache/avro/TestSchema.java | 6 +-
.../main/java/org/apache/avro/mojo/IDLMojo.java | 16 +-
lang/java/pom.xml | 2 +
.../main/java/org/apache/avro/tool/IdlTool.java | 8 +-
42 files changed, 2088 insertions(+), 694 deletions(-)
diff --git a/.editorconfig b/.editorconfig
index a2a93880b..b96e2b9c6 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -19,6 +19,8 @@ root = true
charset = utf-8
end_of_line = lf
insert_final_newline = true
+ij_any_block_comment_at_first_column = false
+ij_any_line_comment_at_first_column = false
[*.{java,xml,sh}]
indent_style = space
diff --git a/.mvn/extensions.xml b/.mvn/extensions.xml
index c6000969d..e2e84018d 100644
--- a/.mvn/extensions.xml
+++ b/.mvn/extensions.xml
@@ -20,6 +20,6 @@
<extension>
<groupId>org.apache.maven.extensions</groupId>
<artifactId>maven-build-cache-extension</artifactId>
- <version>1.0.0</version>
+ <version>1.0.1</version>
</extension>
</extensions>
diff --git a/doc/content/en/docs/++version++/Getting started (Java)/_index.md
b/doc/content/en/docs/++version++/Getting started (Java)/_index.md
index 2eae94b29..2d964c9c1 100644
--- a/doc/content/en/docs/++version++/Getting started (Java)/_index.md
+++ b/doc/content/en/docs/++version++/Getting started (Java)/_index.md
@@ -77,7 +77,7 @@ You may also build the required Avro jars from source.
Building Avro is beyond t
## Defining a schema
-Avro schemas are defined using JSON. Schemas are composed of primitive types
(null, boolean, int, long, float, double, bytes, and string) and complex types
(record, enum, array, map, union, and fixed). You can learn more about Avro
schemas and types from the specification, but for now let's start with a simple
schema example, user.avsc:
+Avro schemas are defined using JSON or IDL (the latter requires an extra
dependency). Schemas are composed of primitive types (null, boolean, int, long,
float, double, bytes, and string) and complex types (record, enum, array, map,
union, and fixed). You can learn more about Avro schemas and types from the
specification, but for now let's start with a simple schema example, user.avsc:
```json
{"namespace": "example.avro",
@@ -209,10 +209,10 @@ Data in Avro is always stored with its corresponding
schema, meaning we can alwa
Let's go over the same example as in the previous section, but without using
code generation: we'll create some users, serialize them to a data file on
disk, and then read back the file and deserialize the users objects.
### Creating users
-First, we use a Parser to read our schema definition and create a Schema
object.
+First, we use a SchemaParser to read our schema definition and create a Schema
object.
```java
-Schema schema = new Schema.Parser().parse(new File("user.avsc"));
+Schema schema = new SchemaParser().parse(new File("user.avsc"));
```
Using this schema, let's create some users.
diff --git
a/lang/java/avro/src/main/java/org/apache/avro/FormattedSchemaParser.java
b/lang/java/avro/src/main/java/org/apache/avro/FormattedSchemaParser.java
new file mode 100644
index 000000000..cd67788fa
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/FormattedSchemaParser.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import java.io.IOException;
+import java.net.URI;
+
+/**
+ * Schema parser for a specific schema format.
+ *
+ * <p>
+ * The {@link SchemaParser} class uses this interface, supporting text based
+ * schema sources.
+ * </p>
+ *
+ * <p>
+ * Implementations are located using a {@link java.util.ServiceLoader} and must
+ * therefore be threadsafe. See the {@code ServiceLoader} class for details on
+ * loading your implementation.
+ * </p>
+ *
+ * @see java.util.ServiceLoader
+ */
+public interface FormattedSchemaParser {
+ /**
+ * <p>
+ * Parse schema definitions from a text based source.
+ * </p>
+ *
+ * <h2>Notes for implementers:</h2>
+ *
+ * <ul>
+ * <li>Schema definitions are expected not to be in the format the parser
+ * expects. So when the input clearly doesn't make sense (e.g., reading "/**"
+ * when expecting JSON), it is a good idea not to do anything (especially
+ * calling methods on the @code ParseContext}).</li>
+ * <li>The parameter {@code parseContext} is not thread-safe.</li>
+ * <li>When parsing, all parsed schema definitions should be added to the
+ * provided {@link ParseContext}.</li>
+ * <li>Optionally, you may return a "main" schema. Some schema definitions
have
+ * one, for example the schema defined by the root of the JSON document in a
+ * <a href="https://avro.apache.org/docs/current/specification/";>standard
schema
+ * definition</a>. If unsure, return {@code null}.</li>
+ * <li>If parsing fails, throw a {@link SchemaParseException}. This will let
the
+ * parsing process recover and continue.</li>
+ * <li>Throwing anything other than a {@code SchemaParseException} will abort
+ * the parsing process, so reserve that for rethrowing exceptions.</li>
+ * </ul>
+ *
+ * @param parseContext the current parse context: all parsed schemata
should
+ * be added here to resolve names with; contains all
+ * previously known types
+ * @param baseUri the base location of the schema, or {@code null} if
+ * not known
+ * @param formattedSchema the text of the schema definition(s) to parse
+ * @return the main schema, if any
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException when the schema cannot be parsed
+ */
+ Schema parse(ParseContext parseContext, URI baseUri, CharSequence
formattedSchema)
+ throws IOException, SchemaParseException;
+}
diff --git a/lang/java/avro/src/main/java/org/apache/avro/JsonSchemaParser.java
b/lang/java/avro/src/main/java/org/apache/avro/JsonSchemaParser.java
new file mode 100644
index 000000000..c7d918786
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/JsonSchemaParser.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import java.io.IOException;
+import java.net.URI;
+
+/**
+ * Schema parser for JSON formatted schemata. This initial implementation
simply
+ * delegates to the {@link Schema.Parser} class, though it should be refactored
+ * out of there.
+ *
+ * <p>
+ * Note: this class is intentionally not available via the Java
+ * {@link java.util.ServiceLoader}, as its use is hardcoded as fallback when no
+ * service exists. This enables users to reliably override the standard JSON
+ * parser as well.
+ * </p>
+ */
+public class JsonSchemaParser implements FormattedSchemaParser {
+ /**
+ * <p>
+ * Parse a schema written in the internal (JSON) format without any
validations.
+ * </p>
+ *
+ * <p>
+ * Using this method is only safe if used to parse a write schema (i.e., a
+ * schema used to read Avro data). Other usages, for example by generated
Avro
+ * code, can cause interoperability problems.
+ * </p>
+ *
+ * <p>
+ * Use with care and sufficient testing!
+ * </p>
+ *
+ * @param fragments one or more strings making up the schema (some schemata
+ * exceed the compiler limits)
+ * @return the parsed schema
+ */
+ public static Schema parseInternal(String... fragments) {
+ StringBuilder buffer = new StringBuilder();
+ for (String fragment : fragments) {
+ buffer.append(fragment);
+ }
+ return new JsonSchemaParser().parse(new
ParseContext(NameValidator.NO_VALIDATION), buffer, null);
+ }
+
+ @Override
+ public Schema parse(ParseContext parseContext, URI baseUri, CharSequence
formattedSchema)
+ throws IOException, SchemaParseException {
+ return parse(parseContext, formattedSchema, parseContext.nameValidator);
+ }
+
+ private Schema parse(ParseContext parseContext, CharSequence
formattedSchema, NameValidator nameValidator)
+ throws SchemaParseException {
+ Schema.Parser parser = new Schema.Parser(nameValidator);
+ if (nameValidator == NameValidator.NO_VALIDATION) {
+ parser.setValidateDefaults(false);
+ } else {
+ parser = new Schema.Parser(nameValidator);
+ }
+ parser.addTypes(parseContext.typesByName().values());
+ Schema schema = parser.parse(formattedSchema.toString());
+ parser.getTypes().values().forEach(parseContext::put);
+ return schema;
+ }
+}
diff --git a/lang/java/avro/src/main/java/org/apache/avro/NameValidator.java
b/lang/java/avro/src/main/java/org/apache/avro/NameValidator.java
new file mode 100644
index 000000000..f1262d922
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/NameValidator.java
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+public interface NameValidator {
+
+ class Result {
+ private final String errors;
+
+ public Result(final String errors) {
+ this.errors = errors;
+ }
+
+ public boolean isOK() {
+ return this == NameValidator.OK;
+ }
+
+ public String getErrors() {
+ return errors;
+ }
+ }
+
+ Result OK = new Result(null);
+
+ default Result validate(String name) {
+ return OK;
+ }
+
+ NameValidator NO_VALIDATION = new NameValidator() {
+ };
+
+ NameValidator UTF_VALIDATOR = new NameValidator() {
+ @Override
+ public Result validate(final String name) {
+ if (name == null) {
+ return new Result("Null name");
+ }
+ int length = name.length();
+ if (length == 0) {
+ return new Result("Empty name");
+ }
+ char first = name.charAt(0);
+ if (!(Character.isLetter(first) || first == '_')) {
+ return new Result("Illegal initial character: " + name);
+ }
+ for (int i = 1; i < length; i++) {
+ char c = name.charAt(i);
+ if (!(Character.isLetterOrDigit(c) || c == '_')) {
+ return new Result("Illegal character in: " + name);
+ }
+ }
+ return OK;
+ }
+ };
+
+ NameValidator STRICT_VALIDATOR = new NameValidator() {
+ @Override
+ public Result validate(final String name) {
+ if (name == null) {
+ return new Result("Null name");
+ }
+ int length = name.length();
+ if (length == 0) {
+ return new Result("Empty name");
+ }
+ char first = name.charAt(0);
+ if (!(isLetter(first) || first == '_')) {
+ return new Result("Illegal initial character: " + name);
+ }
+ for (int i = 1; i < length; i++) {
+ char c = name.charAt(i);
+ if (!(isLetter(c) || isDigit(c) || c == '_')) {
+ return new Result("Illegal character in: " + name);
+ }
+ }
+ return OK;
+ }
+
+ private boolean isLetter(char c) {
+ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
+ }
+
+ private boolean isDigit(char c) {
+ return c >= '0' && c <= '9';
+ }
+
+ };
+
+}
diff --git a/lang/java/avro/src/main/java/org/apache/avro/ParseContext.java
b/lang/java/avro/src/main/java/org/apache/avro/ParseContext.java
new file mode 100644
index 000000000..401c93e50
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/ParseContext.java
@@ -0,0 +1,234 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import org.apache.avro.util.SchemaResolver;
+
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Class to define a name context, useful to reference schemata with. This
+ * allows for the following:
+ *
+ * <ul>
+ * <li>Provide a default namespace for nested contexts, as found for example in
+ * JSON based schema definitions.</li>
+ * <li>Find schemata by name, including primitives.</li>
+ * <li>Collect new named schemata.</li>
+ * </ul>
+ *
+ * <p>
+ * Note: this class has no use for most Avro users, but is a key component when
+ * implementing a schema parser.
+ * </p>
+ *
+ * @see <a href="https://avro.apache.org/docs/current/specification/";>JSON
based
+ * schema definition</a>
+ **/
+public class ParseContext {
+ private static final Map<String, Schema.Type> PRIMITIVES = new HashMap<>();
+
+ static {
+ PRIMITIVES.put("string", Schema.Type.STRING);
+ PRIMITIVES.put("bytes", Schema.Type.BYTES);
+ PRIMITIVES.put("int", Schema.Type.INT);
+ PRIMITIVES.put("long", Schema.Type.LONG);
+ PRIMITIVES.put("float", Schema.Type.FLOAT);
+ PRIMITIVES.put("double", Schema.Type.DOUBLE);
+ PRIMITIVES.put("boolean", Schema.Type.BOOLEAN);
+ PRIMITIVES.put("null", Schema.Type.NULL);
+ }
+
+ private static final Set<Schema.Type> NAMED_SCHEMA_TYPES =
EnumSet.of(Schema.Type.RECORD, Schema.Type.ENUM,
+ Schema.Type.FIXED);
+ private final Map<String, Schema> oldSchemas;
+ private final Map<String, Schema> newSchemas;
+ // Visible for use in JsonSchemaParser
+ final NameValidator nameValidator;
+
+ /**
+ * Create a {@code ParseContext} for the default/{@code null} namespace,
using
+ * default name validation for new schemata.
+ */
+ public ParseContext() {
+ this(NameValidator.UTF_VALIDATOR);
+ }
+
+ /**
+ * Create a {@code ParseContext} using the specified name validation for new
+ * schemata.
+ */
+ public ParseContext(NameValidator nameValidator) {
+ this(nameValidator, new LinkedHashMap<>(), new LinkedHashMap<>());
+ }
+
+ private ParseContext(NameValidator nameValidator, Map<String, Schema>
oldSchemas, Map<String, Schema> newSchemas) {
+ this.nameValidator = nameValidator;
+ this.oldSchemas = oldSchemas;
+ this.newSchemas = newSchemas;
+ }
+
+ /**
+ * Create a derived context using a different fallback namespace.
+ *
+ * @return a new context
+ */
+ public ParseContext namespace() {
+ return new ParseContext(nameValidator, oldSchemas, newSchemas);
+ }
+
+ /**
+ * Tell whether this context contains a schema with the given name.
+ *
+ * @param name a schema name
+ * @return {@code true} if the context contains a schema with this name,
+ * {@code false} otherwise
+ */
+ public boolean contains(String name) {
+ return PRIMITIVES.containsKey(name) || oldSchemas.containsKey(name) ||
newSchemas.containsKey(name);
+ }
+
+ /**
+ * <p>
+ * Resolve a schema by name.
+ * </p>
+ *
+ * <p>
+ * That is:
+ * </p>
+ *
+ * <ul>
+ * <li>If {@code fullName} is a primitive name, return a (new) schema for
+ * it</li>
+ * <li>Otherwise: resolve the schema in its own namespace and in the null
+ * namespace (the former takes precedence)</li>
+ * </ul>
+ *
+ * Resolving means that the schema is returned if known, and otherwise an
+ * unresolved schema (a reference) is returned.
+ *
+ * @param fullName the full schema name to resolve
+ * @return the schema
+ * @throws SchemaParseException when the schema does not exist
+ */
+ public Schema resolve(String fullName) {
+ Schema.Type type = PRIMITIVES.get(fullName);
+ if (type != null) {
+ return Schema.create(type);
+ }
+
+ Schema schema = getSchema(fullName);
+ if (schema == null) {
+ // Not found; attempt to resolve in the default namespace
+ int lastDot = fullName.lastIndexOf('.');
+ String name = fullName.substring(lastDot + 1);
+ schema = getSchema(name);
+ }
+
+ return schema != null ? schema : SchemaResolver.unresolvedSchema(fullName);
+ }
+
+ private Schema getSchema(String fullName) {
+ Schema schema = oldSchemas.get(fullName);
+ if (schema == null) {
+ schema = newSchemas.get(fullName);
+ }
+ return schema;
+ }
+
+ private boolean notEmpty(String str) {
+ return str != null && !str.isEmpty();
+ }
+
+ /**
+ * Put the schema into this context. This is an idempotent operation: it only
+ * fails if this context already has a different schema with the same name.
+ *
+ * <p>
+ * Note that although this method works for all types except for arrays, maps
+ * and unions, all primitive types have already been defined upon
construction.
+ * This means you cannot redefine a 'long' with a logical timestamp type.
+ * </p>
+ *
+ * @param schema the schema to put into the context
+ */
+ public void put(Schema schema) {
+ if (!(NAMED_SCHEMA_TYPES.contains(schema.getType()))) {
+ throw new AvroTypeException("You can only put a named schema into the
context");
+ }
+
+ String fullName = requireValidFullName(schema.getFullName());
+
+ Schema alreadyKnownSchema = oldSchemas.get(fullName);
+ if (alreadyKnownSchema != null) {
+ if (!schema.equals(alreadyKnownSchema)) {
+ throw new SchemaParseException("Can't redefine: " + fullName);
+ }
+ } else {
+ Schema previouslyAddedSchema = newSchemas.putIfAbsent(fullName, schema);
+ if (previouslyAddedSchema != null &&
!previouslyAddedSchema.equals(schema)) {
+ throw new SchemaParseException("Can't redefine: " + fullName);
+ }
+ }
+ }
+
+ private String requireValidFullName(String fullName) {
+ String[] names = fullName.split("\\.");
+ for (int i = 0; i < names.length - 1; i++) {
+ validateName(names[i], "Namespace part");
+ }
+ validateName(names[names.length - 1], "Name");
+ return fullName;
+ }
+
+ private void validateName(String name, String what) {
+ NameValidator.Result result = nameValidator.validate(name);
+ if (!result.isOK()) {
+ throw new SchemaParseException(what + " \"" + name + "\" is invalid: " +
result.getErrors());
+ }
+ }
+
+ public boolean hasNewSchemas() {
+ return !newSchemas.isEmpty();
+ }
+
+ public void commit() {
+ oldSchemas.putAll(newSchemas);
+ newSchemas.clear();
+ }
+
+ public void rollback() {
+ newSchemas.clear();
+ }
+
+ /**
+ * Return all known types by their fullname.
+ *
+ * @return a map of all types by their name
+ */
+ public Map<String, Schema> typesByName() {
+ LinkedHashMap<String, Schema> result = new LinkedHashMap<>();
+ result.putAll(oldSchemas);
+ result.putAll(newSchemas);
+ return result;
+ }
+}
diff --git a/lang/java/avro/src/main/java/org/apache/avro/Schema.java
b/lang/java/avro/src/main/java/org/apache/avro/Schema.java
index 38a6e4a9e..f312ecfb6 100644
--- a/lang/java/avro/src/main/java/org/apache/avro/Schema.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/Schema.java
@@ -25,6 +25,12 @@ import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.DoubleNode;
import com.fasterxml.jackson.databind.node.NullNode;
+import org.apache.avro.util.internal.Accessor;
+import org.apache.avro.util.internal.Accessor.FieldAccessor;
+import org.apache.avro.util.internal.JacksonUtils;
+import org.apache.avro.util.internal.ThreadLocalWithInitial;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
import java.io.ByteArrayOutputStream;
import java.io.File;
@@ -51,13 +57,6 @@ import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
-import org.apache.avro.util.internal.Accessor;
-import org.apache.avro.util.internal.Accessor.FieldAccessor;
-import org.apache.avro.util.internal.JacksonUtils;
-import org.apache.avro.util.internal.ThreadLocalWithInitial;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
import static org.apache.avro.LogicalType.LOGICAL_TYPE_PROP;
/**
@@ -1490,7 +1489,7 @@ public abstract class Schema extends JsonProperties
implements Serializable {
*/
public static class Parser {
private Names names = new Names();
- private final Schema.NameValidator validate;
+ private final NameValidator validate;
private boolean validateDefaults = true;
public Parser() {
@@ -1760,18 +1759,18 @@ public abstract class Schema extends JsonProperties
implements Serializable {
}
}
- private static ThreadLocal<Schema.NameValidator> validateNames =
ThreadLocalWithInitial
+ private static ThreadLocal<NameValidator> validateNames =
ThreadLocalWithInitial
.of(() -> NameValidator.UTF_VALIDATOR);
private static String validateName(String name) {
NameValidator.Result result = validateNames.get().validate(name);
if (!result.isOK()) {
- throw new SchemaParseException(result.errors);
+ throw new SchemaParseException(result.getErrors());
}
return name;
}
- public static void setNameValidator(final Schema.NameValidator validator) {
+ public static void setNameValidator(final NameValidator validator) {
Schema.validateNames.set(validator);
}
@@ -2311,84 +2310,6 @@ public abstract class Schema extends JsonProperties
implements Serializable {
return alias;
}
- public interface NameValidator {
-
- class Result {
- private final String errors;
-
- public Result(final String errors) {
- this.errors = errors;
- }
-
- public boolean isOK() {
- return this == NameValidator.OK;
- }
-
- public String getErrors() {
- return errors;
- }
- }
-
- Result OK = new Result(null);
-
- default Result validate(String name) {
- return OK;
- }
-
- NameValidator NO_VALIDATION = new NameValidator() {
- };
-
- NameValidator UTF_VALIDATOR = new NameValidator() {
- @Override
- public Result validate(final String name) {
- if (name == null)
- return new Result("Null name");
- int length = name.length();
- if (length == 0)
- return new Result("Empty name");
- char first = name.charAt(0);
- if (!(Character.isLetter(first) || first == '_'))
- return new Result("Illegal initial character: " + name);
- for (int i = 1; i < length; i++) {
- char c = name.charAt(i);
- if (!(Character.isLetterOrDigit(c) || c == '_'))
- return new Result("Illegal character in: " + name);
- }
- return OK;
- }
- };
-
- NameValidator STRICT_VALIDATOR = new NameValidator() {
- @Override
- public Result validate(final String name) {
- if (name == null)
- return new Result("Null name");
- int length = name.length();
- if (length == 0)
- return new Result("Empty name");
- char first = name.charAt(0);
- if (!(isLetter(first) || first == '_'))
- return new Result("Illegal initial character: " + name);
- for (int i = 1; i < length; i++) {
- char c = name.charAt(i);
- if (!(isLetter(c) || isDigit(c) || c == '_'))
- return new Result("Illegal character in: " + name);
- }
- return OK;
- }
-
- private boolean isLetter(char c) {
- return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
- }
-
- private boolean isDigit(char c) {
- return c >= '0' && c <= '9';
- }
-
- };
-
- }
-
/**
* No change is permitted on LockableArrayList once lock() has been called on
* it.
diff --git a/lang/java/avro/src/main/java/org/apache/avro/SchemaParser.java
b/lang/java/avro/src/main/java/org/apache/avro/SchemaParser.java
new file mode 100644
index 000000000..dfb3c01f3
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/SchemaParser.java
@@ -0,0 +1,249 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import org.apache.avro.util.UtfTextUtils;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Reader;
+import java.net.URI;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.ServiceLoader;
+
+/**
+ * Avro schema parser for text-based formats like JSON, IDL, etc.
+ *
+ * <p>
+ * Parses formatted (i.e., text based) schemata from a given source using the
+ * available {@link FormattedSchemaParser} implementations, and returns the
+ * first result. This means it can transparently handle any schema format. The
+ * Avro project defines a JSON based format and an IDL format (the latter
+ * available as a separate dependency), but you can also provide your own.
+ * </p>
+ *
+ * <p>
+ * The parser can handle various text based sources. If the source contains a
+ * UTF encoded latin text based format it can even detect which UTF encoding
was
+ * used (UTF-8, UTF16BE, UTF16LE, UTF-32BE or UTF32LE).
+ * </p>
+ *
+ * @see FormattedSchemaParser
+ * @see UtfTextUtils
+ */
+public class SchemaParser {
+ private final ParseContext parseContext;
+ private final Collection<FormattedSchemaParser> formattedSchemaParsers;
+
+ /**
+ * Create a schema parser. Initially, the list of known (named) schemata is
+ * empty.
+ */
+ public SchemaParser() {
+ this.parseContext = new ParseContext();
+ this.formattedSchemaParsers = new ArrayList<>();
+ for (FormattedSchemaParser formattedSchemaParser :
ServiceLoader.load(FormattedSchemaParser.class)) {
+ formattedSchemaParsers.add(formattedSchemaParser);
+ }
+ // Add the default / JSON parser last (not as a service, even though it
+ // implements the service interface), to allow implementations that parse
JSON
+ // files into schemata differently.
+ formattedSchemaParsers.add(new JsonSchemaParser());
+ }
+
+ /**
+ * Parse an Avro schema from a file. The file content is assumed to be UTF-8
+ * text.
+ *
+ * @param file the file to read
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ * @see UtfTextUtils
+ */
+ public Schema parse(File file) throws IOException, SchemaParseException {
+ return parse(file, null);
+ }
+
+ /**
+ * Parse an Avro schema from a file written with a specific character set.
+ *
+ * @param file the file to read
+ * @param charset the character set of the file contents
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ */
+ public Schema parse(File file, Charset charset) throws IOException,
SchemaParseException {
+ return parse(file.toPath(), charset);
+ }
+
+ /**
+ * Parse an Avro schema from a file. The file content is assumed to be UTF-8
+ * text.
+ *
+ * @param file the file to read
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ * @see UtfTextUtils
+ */
+ public Schema parse(Path file) throws IOException, SchemaParseException {
+ return parse(file, null);
+ }
+
+ /**
+ * Parse an Avro schema from a file written with a specific character set.
+ *
+ * @param file the file to read
+ * @param charset the character set of the file contents
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ */
+ public Schema parse(Path file, Charset charset) throws IOException,
SchemaParseException {
+ URI inputDir = file.getParent().toUri();
+ try (InputStream stream = Files.newInputStream(file)) {
+ String formattedSchema = UtfTextUtils.readAllBytes(stream, charset);
+ return parse(inputDir, formattedSchema);
+ }
+ }
+
+ /**
+ * Parse an Avro schema from an input stream. The stream content is assumed
to
+ * be UTF-8 text. Note that the stream stays open after reading.
+ *
+ * @param in the stream to read
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ * @see UtfTextUtils
+ */
+ public Schema parse(InputStream in) throws IOException, SchemaParseException
{
+ return parse(in, null);
+ }
+
+ /**
+ * Parse an Avro schema from an input stream. Note that the stream stays open
+ * after reading.
+ *
+ * @param in the stream to read
+ * @param charset the character set of the stream contents
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ */
+ public Schema parse(InputStream in, Charset charset) throws IOException,
SchemaParseException {
+ return parse(UtfTextUtils.readAllBytes(in, charset));
+ }
+
+ /**
+ * Parse an Avro schema from an input reader.
+ *
+ * @param in the stream to read
+ * @return the schema
+ * @throws IOException when the schema cannot be read
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ */
+ public Schema parse(Reader in) throws IOException, SchemaParseException {
+ return parse(UtfTextUtils.readAllChars(in));
+ }
+
+ /**
+ * Parse an Avro schema from a string.
+ *
+ * @param text the text to parse
+ * @return the schema
+ * @throws SchemaParseException if parsing the schema failed; contains
+ * suppressed underlying parse exceptions if
+ * available
+ */
+ public Schema parse(CharSequence text) throws SchemaParseException {
+ try {
+ return parse(null, text);
+ } catch (IOException e) {
+ // This can only happen if parser implementations try to read other
(related)
+ // schemata from somewhere.
+ throw new AvroRuntimeException("Could not read schema", e);
+ }
+ }
+
+ /**
+ * Parse the given schema (string) within the specified context using all
+ * available {@link FormattedSchemaParser} implementations, collecting any
+ * {@link SchemaParseException}s that occur, and return the first
successfully
+ * parsed schema. If all parsers fail, throw a {@code SchemaParseException}
with
+ * all collected parse exceptions added as suppressed exceptions. Uses the
base
+ * location of the schema (e.g., the directory where the schema file lives)
if
+ * available.
+ *
+ * @param baseUri the base location of the schema, or {@code null} if
+ * not known
+ * @param formattedSchema the schema as text
+ * @return the parsed schema
+ * @throws IOException if thrown by one of the parsers
+ * @throws RuntimeException if thrown by one of the parsers
+ * @throws SchemaParseException when all parsers fail
+ */
+ private Schema parse(URI baseUri, CharSequence formattedSchema) throws
IOException, SchemaParseException {
+ List<SchemaParseException> parseExceptions = new ArrayList<>();
+ for (FormattedSchemaParser formattedSchemaParser : formattedSchemaParsers)
{
+ try {
+ Schema schema = formattedSchemaParser.parse(parseContext, baseUri,
formattedSchema);
+ if (parseContext.hasNewSchemas()) {
+ // Parsing succeeded: return the result.
+ parseContext.commit();
+ return schema;
+ }
+ } catch (SchemaParseException e) {
+ parseContext.rollback();
+ parseExceptions.add(e);
+ }
+ }
+
+ // None of the available parsers succeeded
+
+ if (parseExceptions.size() == 1) {
+ throw parseExceptions.get(0);
+ }
+ SchemaParseException parseException = new SchemaParseException(
+ "Could not parse the schema (the suppressed exceptions tell why).");
+ parseExceptions.forEach(parseException::addSuppressed);
+ throw parseException;
+ }
+}
diff --git
a/lang/java/avro/src/main/java/org/apache/avro/file/DataFileStream.java
b/lang/java/avro/src/main/java/org/apache/avro/file/DataFileStream.java
index 150d2ace9..e9b5ed388 100644
--- a/lang/java/avro/src/main/java/org/apache/avro/file/DataFileStream.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/file/DataFileStream.java
@@ -34,6 +34,7 @@ import java.util.NoSuchElementException;
import org.apache.avro.AvroRuntimeException;
import org.apache.avro.InvalidAvroMagicException;
+import org.apache.avro.NameValidator;
import org.apache.avro.Schema;
import org.apache.avro.io.BinaryEncoder;
import org.apache.avro.io.DecoderFactory;
@@ -139,7 +140,7 @@ public class DataFileStream<D> implements Iterator<D>,
Iterable<D>, Closeable {
// finalize the header
header.metaKeyList = Collections.unmodifiableList(header.metaKeyList);
- header.schema = new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).setValidateDefaults(false)
+ header.schema = new
Schema.Parser(NameValidator.NO_VALIDATION).setValidateDefaults(false)
.parse(getMetaString(DataFileConstants.SCHEMA));
this.codec = resolveCodec();
reader.setSchema(header.schema);
diff --git
a/lang/java/avro/src/main/java/org/apache/avro/util/SchemaResolver.java
b/lang/java/avro/src/main/java/org/apache/avro/util/SchemaResolver.java
new file mode 100644
index 000000000..c3a25a5e5
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/util/SchemaResolver.java
@@ -0,0 +1,367 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro.util;
+
+import org.apache.avro.AvroTypeException;
+import org.apache.avro.JsonProperties;
+import org.apache.avro.ParseContext;
+import org.apache.avro.Protocol;
+import org.apache.avro.Schema;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.HashSet;
+import java.util.IdentityHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+import static org.apache.avro.Schema.Type.ARRAY;
+import static org.apache.avro.Schema.Type.ENUM;
+import static org.apache.avro.Schema.Type.FIXED;
+import static org.apache.avro.Schema.Type.MAP;
+import static org.apache.avro.Schema.Type.RECORD;
+import static org.apache.avro.Schema.Type.UNION;
+
+/**
+ * Utility class to resolve schemas that are unavailable at the point they are
+ * referenced in the IDL.
+ */
+public final class SchemaResolver {
+
+ private SchemaResolver() {
+ }
+
+ private static final String UR_SCHEMA_ATTR =
"org.apache.avro.idl.unresolved.name";
+
+ private static final String UR_SCHEMA_NAME = "UnresolvedSchema";
+
+ private static final String UR_SCHEMA_NS = "org.apache.avro.compiler";
+
+ private static final AtomicInteger COUNTER = new AtomicInteger();
+
+ /**
+ * Create a schema to represent an "unresolved" schema. (used to represent a
+ * schema whose definition does not exist, yet).
+ *
+ * @param name a schema name
+ * @return an unresolved schema for the given name
+ */
+ public static Schema unresolvedSchema(final String name) {
+ Schema schema = Schema.createRecord(UR_SCHEMA_NAME + '_' +
COUNTER.getAndIncrement(), "unresolved schema",
+ UR_SCHEMA_NS, false, Collections.emptyList());
+ schema.addProp(UR_SCHEMA_ATTR, name);
+ return schema;
+ }
+
+ /**
+ * Is this an unresolved schema.
+ *
+ * @param schema a schema
+ * @return whether the schema is an unresolved schema
+ */
+ public static boolean isUnresolvedSchema(final Schema schema) {
+ return (schema.getType() == Schema.Type.RECORD &&
schema.getProp(UR_SCHEMA_ATTR) != null && schema.getName() != null
+ && schema.getName().startsWith(UR_SCHEMA_NAME) &&
UR_SCHEMA_NS.equals(schema.getNamespace()));
+ }
+
+ /**
+ * Get the unresolved schema name.
+ *
+ * @param schema an unresolved schema
+ * @return the name of the unresolved schema
+ */
+ public static String getUnresolvedSchemaName(final Schema schema) {
+ if (!isUnresolvedSchema(schema)) {
+ throw new IllegalArgumentException("Not a unresolved schema: " + schema);
+ }
+ return schema.getProp(UR_SCHEMA_ATTR);
+ }
+
+ /**
+ * Is this an unresolved schema?
+ */
+ public static boolean isFullyResolvedSchema(final Schema schema) {
+ if (isUnresolvedSchema(schema)) {
+ return false;
+ } else {
+ return Schemas.visit(schema, new IsResolvedSchemaVisitor());
+ }
+ }
+
+ /**
+ * Clone the provided schema while resolving all unreferenced schemas.
+ *
+ * @param parseContext the parse context with known names
+ * @param schema the schema to resolve
+ * @return a copy of the schema with all schemas resolved
+ */
+ public static Schema resolve(final ParseContext parseContext, Schema schema)
{
+ if (schema == null) {
+ return null;
+ }
+ ResolvingVisitor visitor = new ResolvingVisitor(schema,
parseContext::resolve);
+ return Schemas.visit(schema, visitor);
+ }
+
+ /**
+ * Clone all provided schemas while resolving all unreferenced schemas.
+ *
+ * @param parseContext the parse context with known names
+ * @param schemas the schemas to resolve
+ * @return a copy of all schemas with all schemas resolved
+ */
+ public static Collection<Schema> resolve(final ParseContext parseContext,
Collection<Schema> schemas) {
+ ResolvingVisitor visitor = new ResolvingVisitor(null,
parseContext::resolve);
+ return schemas.stream().map(schema -> Schemas.visit(schema,
visitor.withRoot(schema))).collect(Collectors.toList());
+ }
+
+ /**
+ * Will clone the provided protocol while resolving all unreferenced schemas
+ *
+ * @param parseContext the parse context with known names
+ * @param protocol the protocol to resolve
+ * @return a copy of the protocol with all schemas resolved
+ */
+ public static Protocol resolve(ParseContext parseContext, final Protocol
protocol) {
+ // Create an empty copy of the protocol
+ Protocol result = new Protocol(protocol.getName(), protocol.getDoc(),
protocol.getNamespace());
+ protocol.getObjectProps().forEach(((JsonProperties) result)::addProp);
+
+ ResolvingVisitor visitor = new ResolvingVisitor(null,
parseContext::resolve);
+ Function<Schema, Schema> resolver = schema -> Schemas.visit(schema,
visitor.withRoot(schema));
+
+ // Resolve all schemata in the protocol.
+
result.setTypes(protocol.getTypes().stream().map(resolver).collect(Collectors.toList()));
+ Map<String, Protocol.Message> resultMessages = result.getMessages();
+ protocol.getMessages().forEach((name, oldValue) -> {
+ Protocol.Message newValue;
+ if (oldValue.isOneWay()) {
+ newValue = result.createMessage(oldValue.getName(), oldValue.getDoc(),
oldValue,
+ resolver.apply(oldValue.getRequest()));
+ } else {
+ Schema request = resolver.apply(oldValue.getRequest());
+ Schema response = resolver.apply(oldValue.getResponse());
+ Schema errors = resolver.apply(oldValue.getErrors());
+ newValue = result.createMessage(oldValue.getName(), oldValue.getDoc(),
oldValue, request, response, errors);
+ }
+ resultMessages.put(name, newValue);
+ });
+ return result;
+ }
+
+ /**
+ * This visitor checks if the current schema is fully resolved.
+ */
+ public static final class IsResolvedSchemaVisitor implements
SchemaVisitor<Boolean> {
+ boolean hasUnresolvedParts;
+
+ IsResolvedSchemaVisitor() {
+ hasUnresolvedParts = false;
+ }
+
+ @Override
+ public SchemaVisitorAction visitTerminal(Schema terminal) {
+ hasUnresolvedParts = isUnresolvedSchema(terminal);
+ return hasUnresolvedParts ? SchemaVisitorAction.TERMINATE :
SchemaVisitorAction.CONTINUE;
+ }
+
+ @Override
+ public SchemaVisitorAction visitNonTerminal(Schema nonTerminal) {
+ hasUnresolvedParts = isUnresolvedSchema(nonTerminal);
+ if (hasUnresolvedParts) {
+ return SchemaVisitorAction.TERMINATE;
+ }
+ if (nonTerminal.getType() == Schema.Type.RECORD &&
!nonTerminal.hasFields()) {
+ // We're still initializing the type...
+ return SchemaVisitorAction.SKIP_SUBTREE;
+ }
+ return SchemaVisitorAction.CONTINUE;
+ }
+
+ @Override
+ public SchemaVisitorAction afterVisitNonTerminal(Schema nonTerminal) {
+ return SchemaVisitorAction.CONTINUE;
+ }
+
+ @Override
+ public Boolean get() {
+ return !hasUnresolvedParts;
+ }
+ }
+
+ /**
+ * This visitor creates clone of the visited Schemata, minus the specified
+ * schema properties, and resolves all unresolved schemas.
+ */
+ public static final class ResolvingVisitor implements SchemaVisitor<Schema> {
+ private static final Set<Schema.Type> CONTAINER_SCHEMA_TYPES =
EnumSet.of(RECORD, ARRAY, MAP, UNION);
+ private static final Set<Schema.Type> NAMED_SCHEMA_TYPES =
EnumSet.of(RECORD, ENUM, FIXED);
+
+ private final Function<String, Schema> symbolTable;
+ private final Set<String> schemaPropertiesToRemove;
+ private final IdentityHashMap<Schema, Schema> replace;
+
+ private final Schema root;
+
+ public ResolvingVisitor(final Schema root, final Function<String, Schema>
symbolTable,
+ String... schemaPropertiesToRemove) {
+ this(root, symbolTable, new
HashSet<>(Arrays.asList(schemaPropertiesToRemove)));
+ }
+
+ public ResolvingVisitor(final Schema root, final Function<String, Schema>
symbolTable,
+ Set<String> schemaPropertiesToRemove) {
+ this.replace = new IdentityHashMap<>();
+ this.symbolTable = symbolTable;
+ this.schemaPropertiesToRemove = schemaPropertiesToRemove;
+
+ this.root = root;
+ }
+
+ public ResolvingVisitor withRoot(Schema root) {
+ return new ResolvingVisitor(root, symbolTable, schemaPropertiesToRemove);
+ }
+
+ @Override
+ public SchemaVisitorAction visitTerminal(final Schema terminal) {
+ Schema.Type type = terminal.getType();
+ Schema newSchema;
+ if (CONTAINER_SCHEMA_TYPES.contains(type)) {
+ if (!replace.containsKey(terminal)) {
+ throw new IllegalStateException("Schema " + terminal + " must be
already processed");
+ }
+ return SchemaVisitorAction.CONTINUE;
+ } else if (type == ENUM) {
+ newSchema = Schema.createEnum(terminal.getName(), terminal.getDoc(),
terminal.getNamespace(),
+ terminal.getEnumSymbols(), terminal.getEnumDefault());
+ } else if (type == FIXED) {
+ newSchema = Schema.createFixed(terminal.getName(), terminal.getDoc(),
terminal.getNamespace(),
+ terminal.getFixedSize());
+ } else {
+ newSchema = Schema.create(type);
+ }
+ copyProperties(terminal, newSchema);
+ replace.put(terminal, newSchema);
+ return SchemaVisitorAction.CONTINUE;
+ }
+
+ public void copyProperties(final Schema first, final Schema second) {
+ // Logical type
+ Optional.ofNullable(first.getLogicalType()).ifPresent(logicalType ->
logicalType.addToSchema(second));
+
+ // Aliases (if applicable)
+ if (NAMED_SCHEMA_TYPES.contains(first.getType())) {
+ first.getAliases().forEach(second::addAlias);
+ }
+
+ // Other properties
+ first.getObjectProps().forEach((name, value) -> {
+ if (!schemaPropertiesToRemove.contains(name)) {
+ second.addProp(name, value);
+ }
+ });
+ }
+
+ @Override
+ public SchemaVisitorAction visitNonTerminal(final Schema nt) {
+ Schema.Type type = nt.getType();
+ if (type == RECORD) {
+ if (isUnresolvedSchema(nt)) {
+ // unresolved schema will get a replacement that we already
encountered,
+ // or we will attempt to resolve.
+ final String unresolvedSchemaName = getUnresolvedSchemaName(nt);
+ Schema resSchema = symbolTable.apply(unresolvedSchemaName);
+ if (resSchema == null) {
+ throw new AvroTypeException("Undefined schema: " +
unresolvedSchemaName);
+ }
+ Schema replacement = replace.computeIfAbsent(resSchema, schema -> {
+ Schemas.visit(schema, this);
+ return replace.get(schema);
+ });
+ replace.put(nt, replacement);
+ } else {
+ // Create a clone without fields. Fields will be added in
afterVisitNonTerminal.
+ Schema newSchema = Schema.createRecord(nt.getName(), nt.getDoc(),
nt.getNamespace(), nt.isError());
+ copyProperties(nt, newSchema);
+ replace.put(nt, newSchema);
+ }
+ }
+ return SchemaVisitorAction.CONTINUE;
+ }
+
+ @Override
+ public SchemaVisitorAction afterVisitNonTerminal(final Schema nt) {
+ Schema.Type type = nt.getType();
+ Schema newSchema;
+ switch (type) {
+ case RECORD:
+ if (!isUnresolvedSchema(nt)) {
+ newSchema = replace.get(nt);
+ // Check if we've already handled the replacement schema with a
+ // reentrant call to visit(...) from within the visitor.
+ if (!newSchema.hasFields()) {
+ List<Schema.Field> fields = nt.getFields();
+ List<Schema.Field> newFields = new ArrayList<>(fields.size());
+ for (Schema.Field field : fields) {
+ newFields.add(new Schema.Field(field,
replace.get(field.schema())));
+ }
+ newSchema.setFields(newFields);
+ }
+ }
+ return SchemaVisitorAction.CONTINUE;
+ case UNION:
+ List<Schema> types = nt.getTypes();
+ List<Schema> newTypes = new ArrayList<>(types.size());
+ for (Schema sch : types) {
+ newTypes.add(replace.get(sch));
+ }
+ newSchema = Schema.createUnion(newTypes);
+ break;
+ case ARRAY:
+ newSchema = Schema.createArray(replace.get(nt.getElementType()));
+ break;
+ case MAP:
+ newSchema = Schema.createMap(replace.get(nt.getValueType()));
+ break;
+ default:
+ throw new IllegalStateException("Illegal type " + type + ", schema " +
nt);
+ }
+ copyProperties(nt, newSchema);
+ replace.put(nt, newSchema);
+ return SchemaVisitorAction.CONTINUE;
+ }
+
+ @Override
+ public Schema get() {
+ return replace.get(root);
+ }
+
+ @Override
+ public String toString() {
+ return "ResolvingVisitor{symbolTable=" + symbolTable + ",
schemaPropertiesToRemove=" + schemaPropertiesToRemove
+ + ", replace=" + replace + '}';
+ }
+ }
+}
diff --git a/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaVisitor.java
b/lang/java/avro/src/main/java/org/apache/avro/util/SchemaVisitor.java
similarity index 77%
rename from lang/java/idl/src/main/java/org/apache/avro/idl/SchemaVisitor.java
rename to lang/java/avro/src/main/java/org/apache/avro/util/SchemaVisitor.java
index 0f9fcae5b..1ac35baed 100644
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaVisitor.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/util/SchemaVisitor.java
@@ -15,7 +15,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.avro.idl;
+package org.apache.avro.util;
import org.apache.avro.Schema;
@@ -44,4 +44,26 @@ public interface SchemaVisitor<T> {
* @return a value that will be returned by the visit method.
*/
T get();
+
+ enum SchemaVisitorAction {
+
+ /**
+ * continue visit.
+ */
+ CONTINUE,
+ /**
+ * terminate visit.
+ */
+ TERMINATE,
+ /**
+ * when returned from pre non terminal visit method the children of the non
+ * terminal are skipped. afterVisitNonTerminal for the current schema will
not
+ * be invoked.
+ */
+ SKIP_SUBTREE,
+ /**
+ * Skip visiting the siblings of this schema.
+ */
+ SKIP_SIBLINGS
+ }
}
diff --git a/lang/java/idl/src/main/java/org/apache/avro/idl/Schemas.java
b/lang/java/avro/src/main/java/org/apache/avro/util/Schemas.java
similarity index 89%
rename from lang/java/idl/src/main/java/org/apache/avro/idl/Schemas.java
rename to lang/java/avro/src/main/java/org/apache/avro/util/Schemas.java
index da4b949d2..927a0c37b 100644
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/Schemas.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/util/Schemas.java
@@ -15,7 +15,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.avro.idl;
+package org.apache.avro.util;
import org.apache.avro.Schema;
import org.apache.avro.Schema.Field;
@@ -51,8 +51,7 @@ public final class Schemas {
while ((current = dq.poll()) != null) {
if (current instanceof Supplier) {
// We are executing a non-terminal post visit.
- @SuppressWarnings("unchecked")
- SchemaVisitorAction action = ((Supplier<SchemaVisitorAction>)
current).get();
+ SchemaVisitor.SchemaVisitorAction action =
((Supplier<SchemaVisitor.SchemaVisitorAction>) current).get();
switch (action) {
case CONTINUE:
break;
@@ -107,14 +106,14 @@ public final class Schemas {
private static boolean visitNonTerminal(final SchemaVisitor<?> visitor,
final Schema schema, final Deque<Object> dq,
final Iterable<Schema> itSupp) {
- SchemaVisitorAction action = visitor.visitNonTerminal(schema);
+ SchemaVisitor.SchemaVisitorAction action =
visitor.visitNonTerminal(schema);
switch (action) {
case CONTINUE:
- dq.push((Supplier<SchemaVisitorAction>) () ->
visitor.afterVisitNonTerminal(schema));
+ dq.push((Supplier<SchemaVisitor.SchemaVisitorAction>) () ->
visitor.afterVisitNonTerminal(schema));
itSupp.forEach(dq::push);
break;
case SKIP_SUBTREE:
- dq.push((Supplier<SchemaVisitorAction>) () ->
visitor.afterVisitNonTerminal(schema));
+ dq.push((Supplier<SchemaVisitor.SchemaVisitorAction>) () ->
visitor.afterVisitNonTerminal(schema));
break;
case SKIP_SIBLINGS:
while (dq.peek() instanceof Schema) {
@@ -130,7 +129,7 @@ public final class Schemas {
}
private static boolean visitTerminal(final SchemaVisitor<?> visitor, final
Schema schema, final Deque<Object> dq) {
- SchemaVisitorAction action = visitor.visitTerminal(schema);
+ SchemaVisitor.SchemaVisitorAction action = visitor.visitTerminal(schema);
switch (action) {
case CONTINUE:
break;
diff --git
a/lang/java/avro/src/main/java/org/apache/avro/util/UtfTextUtils.java
b/lang/java/avro/src/main/java/org/apache/avro/util/UtfTextUtils.java
new file mode 100644
index 000000000..967a48bf3
--- /dev/null
+++ b/lang/java/avro/src/main/java/org/apache/avro/util/UtfTextUtils.java
@@ -0,0 +1,247 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro.util;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Text utilities especially suited for UTF encoded bytes.
+ *
+ * <p>
+ * When the character set is unknown, methods in this class assume UTF encoded
+ * text and try to detect the UTF variant (8/16/32 bits, big/little endian),
+ * using the BOM (if present) or an educated guess assuming the first character
+ * is in the range U+0000-U+00FF. This heuristic works for all latin text based
+ * formats, which includes Avro IDL, JSON, XML, etc. If the heuristic fails,
+ * UTF-8 is assumed.
+ * </p>
+ *
+ * @see <a href="https://www.w3.org/TR/xml/#sec-guessing";>XML specification,
+ * appendix F: Autodetection of Character Encodings (Non-Normative)</a>
+ */
+public class UtfTextUtils {
+ private static final int TRANSFER_BUFFER_SIZE = 4096;
+ /**
+ * JVM standard character set (but that doesn't have a constant in
+ * {@link StandardCharsets}) for UTF-32.
+ */
+ private static final Charset UTF_32 = Charset.forName("UTF-32");
+ /**
+ * JVM standard character set (but that doesn't have a constant in
+ * {@link StandardCharsets}) for UTF-32BE.
+ */
+ private static final Charset UTF_32BE = Charset.forName("UTF-32BE");
+ /**
+ * JVM standard character set (but that doesn't have a constant in
+ * {@link StandardCharsets}) for UTF-32LE.
+ */
+ private static final Charset UTF_32LE = Charset.forName("UTF-32LE");
+
+ public static String asString(byte[] bytes, Charset charset) {
+ if (charset == null) {
+ charset = detectUtfCharset(bytes);
+ }
+ return skipBOM(new String(bytes, charset));
+ }
+
+ /**
+ * Reads the specified input stream as text. If {@code charset} is {@code
null},
+ * the method will assume UTF encoded text and attempt to detect the
appropriate
+ * charset.
+ *
+ * @param input the input to read
+ * @param charset the character set of the input, if known
+ * @return all bytes, read into a string
+ * @throws IOException when reading the input fails for some reason
+ */
+ public static String readAllBytes(InputStream input, Charset charset) throws
IOException {
+ if (charset == null) {
+ input = ensureMarkSupport(input);
+ input.mark(4);
+ byte[] buffer = new byte[4];
+ int bytesRead = fillBuffer(input, buffer);
+ input.reset();
+
+ charset = detectUtfCharset0(buffer, bytesRead);
+
+ if (charset == null) {
+ throw new IOException("Unsupported UCS-4 variant (neither UTF-32BE nor
UTF32-LE)");
+ }
+ }
+ Reader reader = new InputStreamReader(input, charset);
+ return readAllChars(reader);
+ }
+
+ private static InputStream ensureMarkSupport(InputStream input) {
+ if (input.markSupported()) {
+ return input;
+ } else {
+ return new BufferedInputStream(input);
+ }
+ }
+
+ private static int fillBuffer(InputStream in, byte[] buf) throws IOException
{
+ int remaining = buf.length;
+ int offset = 0;
+ while (remaining > 0) {
+ int bytesRead = in.read(buf, offset, remaining);
+ // As remaining > 0, bytesRead is either -1 or positive
+ if (bytesRead == -1) {
+ break;
+ }
+ offset += bytesRead;
+ remaining -= bytesRead;
+ }
+ return offset;
+ }
+
+ public static String readAllChars(Reader input) throws IOException {
+ StringBuilder buffer = new StringBuilder();
+ char[] charBuffer = new char[TRANSFER_BUFFER_SIZE];
+ int charsRead;
+ while ((charsRead = input.read(charBuffer, 0, TRANSFER_BUFFER_SIZE)) >= 0)
{
+ buffer.append(charBuffer, 0, charsRead);
+ }
+ return skipBOM(buffer);
+ }
+
+ private static String skipBOM(CharSequence buffer) {
+ if (buffer.charAt(0) == '\uFEFF') {
+ return buffer.subSequence(1, buffer.length()).toString();
+ }
+ return buffer.toString();
+ }
+
+ /**
+ * Assuming UTF encoded bytes, detect the UTF variant (8/16/32 bits,
big/little
+ * endian).
+ *
+ * <p>
+ * To ensure the most accurate detection, the algorithm requires at least 4
+ * bytes. One should only provide less than 4 bytes of data if that is all
there
+ * is.
+ * </p>
+ *
+ * <p>
+ * Detection is certain when a byte order mark (BOM) is used. Otherwise a
+ * heuristic is used, which works when the first character is from the first
256
+ * characters from the BMP (U+0000-U+00FF). This works for all latin-based
+ * textual formats, like Avro IDL, JSON, YAML, XML, etc.
+ * </p>
+ *
+ * @param firstFewBytes the first few bytes of the text to detect the
character
+ * set of
+ * @return the character set to use
+ */
+ public static Charset detectUtfCharset(byte[] firstFewBytes) {
+ Charset detectedCharset = detectUtfCharset0(firstFewBytes,
firstFewBytes.length);
+ if (detectedCharset == null) {
+ throw new IllegalArgumentException("Unsupported UCS-4 variant (neither
UTF-32BE nor UTF32-LE)");
+ }
+ return detectedCharset;
+ }
+
+ private static Charset detectUtfCharset0(byte[] firstFewBytes, int numBytes)
{
+ // spotless:off
+ /*
+ * Lookup table, adapted from https://www.w3.org/TR/xml/#sec-guessing
+ * It omits non-UTF encodings (the 2nd and 3rd rows from the end).
+ * Note that the order (with respect to UTF-32 & UTF-16) is important!
+ *
+ * (the non-zero bytes encode the byte order mark, BOM)
+ *
+ * Match the 'magic bytes' in order, and take the first match:
+ * 00 00 FE FF -> UTF-32 (be)
+ * FF FE 00 00 -> UTF-32 (le)
+ * 00 00 FF FE -> unsupported UCS-4 (byte order 2143)
+ * FE FF 00 00 -> unsupported UCS-4 (byte order 3412)
+ * FE FF __ __ -> UTF-16 (be)
+ * FF FE __ __ -> UTF-16 (le)
+ * EF BB BF __ -> UTF-8
+ * 00 00 00 __ -> UTF-32BE
+ * __ 00 00 00 -> UTF-32LE
+ * 00 00 __ 00 -> unsupported UCS-4 (byte order 2143)
+ * 00 __ 00 00 -> unsupported UCS-4 (byte order 3412)
+ * 00 __ __ __ -> UTF-16BE
+ * __ 00 __ __ -> UTF-16LE
+ * __ __ __ __ -> UTF-8 (fallback)
+ */
+ // spotless:on
+ int quad = quad(firstFewBytes, numBytes);
+ int word = quad >>> 16;
+ if (numBytes > 3 && (quad == 0x0000FEFF || quad == 0xFFFE0000)) {
+ // With BOM: UTF-32 (Charset handles BOM & endianness)
+ return UTF_32;
+ } else if (numBytes > 3 && (quad == 0x0000FFFE || quad == 0xFEFF0000)) {
+ // With BOM: unsupported UCS-4 encoding (byte order 2143 resp. 3412)
+ return null;
+ } else if (numBytes > 1 && (word == 0xFEFF || word == 0xFFFE)) {
+ // With BOM: UTF-16 (Charset handles BOM & endianness)
+ return StandardCharsets.UTF_16;
+ } else if (numBytes > 2 && quad >>> 8 == 0xEFBBBF) {
+ // With BOM: UTF-8 (Charset does not handle a BOM, so our caller must
skip it)
+ return StandardCharsets.UTF_8;
+ } else if (numBytes > 3 && (quad & 0xFFFFFF00) == 0) {
+ // Without BOM (i.e., a guess)
+ return UTF_32BE;
+ } else if (numBytes > 3 && (quad & 0x00FFFFFF) == 0) {
+ // Without BOM (i.e., a guess)
+ return UTF_32LE;
+ } else if (numBytes > 3 && (quad & 0xFFFF00FF) == 0 || (quad & 0xFF00FFFF)
== 0) {
+ // Without BOM (i.e., a guess): unsupported UCS-4 encoding (byte order
2143
+ // resp. 3412)
+ return null;
+ } else if (numBytes > 1 && (word & 0xFF00) == 0) {
+ // Without BOM (i.e., a guess)
+ return StandardCharsets.UTF_16BE;
+ } else if (numBytes > 1 && (word & 0x00FF) == 0) {
+ // Without BOM (i.e., a guess)
+ return StandardCharsets.UTF_16LE;
+ } else {
+ // Fallback
+ return StandardCharsets.UTF_8;
+ }
+ }
+
+ private static int quad(byte[] bytes, int length) {
+ int quad = 0xFFFFFFFF;
+ switch (length) {
+ default:
+ quad = (quad & 0xFFFFFF00) | (bytes[3] & 0xFF);
+ // Fallthrough
+ case 3:
+ quad = (quad & 0xFFFF00FF) | (bytes[2] & 0xFF) << 8;
+ // Fallthrough
+ case 2:
+ quad = (quad & 0xFF00FFFF) | (bytes[1] & 0xFF) << 16;
+ // Fallthrough
+ case 1:
+ quad = (quad & 0x00FFFFFF) | (bytes[0] & 0xFF) << 24;
+ // Fallthrough
+ case 0:
+ break;
+ }
+ return quad;
+ }
+}
diff --git
a/lang/java/avro/src/test/java/org/apache/avro/DummySchemaParser.java
b/lang/java/avro/src/test/java/org/apache/avro/DummySchemaParser.java
new file mode 100644
index 000000000..4802aea07
--- /dev/null
+++ b/lang/java/avro/src/test/java/org/apache/avro/DummySchemaParser.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.net.URI;
+
+public class DummySchemaParser implements FormattedSchemaParser {
+ /**
+ * Logger for this class.
+ */
+ private static final Logger LOGGER =
LoggerFactory.getLogger(DummySchemaParser.class);
+ public static final String SCHEMA_TEXT_ONE = "one";
+ public static final Schema FIXED_SCHEMA = Schema.createFixed("DummyOne",
null, "tests", 42);
+ public static final String SCHEMA_TEXT_ERROR = "error";
+ public static final String SCHEMA_TEXT_IO_ERROR = "io-error";
+ public static final String ERROR_MESSAGE = "Syntax error";
+ public static final String IO_ERROR_MESSAGE = "I/O error";
+
+ @Override
+ public Schema parse(ParseContext parseContext, URI baseUri, CharSequence
formattedSchema)
+ throws IOException, SchemaParseException {
+ LOGGER.info("Using DummySchemaParser for {}", formattedSchema);
+ if (SCHEMA_TEXT_ONE.contentEquals(formattedSchema)) {
+ parseContext.put(FIXED_SCHEMA);
+ return FIXED_SCHEMA;
+ } else if (SCHEMA_TEXT_ERROR.contentEquals(formattedSchema)) {
+ throw new SchemaParseException(ERROR_MESSAGE);
+ } else if (SCHEMA_TEXT_IO_ERROR.contentEquals(formattedSchema)) {
+ throw new IOException(IO_ERROR_MESSAGE);
+ }
+ // Syntax not recognized
+ return null;
+ }
+}
diff --git a/lang/java/avro/src/test/java/org/apache/avro/ParseContextTest.java
b/lang/java/avro/src/test/java/org/apache/avro/ParseContextTest.java
new file mode 100644
index 000000000..afd3a6435
--- /dev/null
+++ b/lang/java/avro/src/test/java/org/apache/avro/ParseContextTest.java
@@ -0,0 +1,124 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import org.apache.avro.util.SchemaResolver;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.EnumSet;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class ParseContextTest {
+ Schema fooRecord, fooRecordCopy, barEnum, bazFixed, mehRecord;
+ ParseContext fooBarBaz;
+
+ @BeforeEach
+ public void setUp() throws Exception {
+ fooRecord = SchemaBuilder.record("ns.Foo").fields().endRecord();
+ fooRecordCopy = SchemaBuilder.record("ns.Foo").fields().endRecord();
+ barEnum = SchemaBuilder.enumeration("ns.Bar").symbols();
+ bazFixed = SchemaBuilder.fixed("ns.Baz").size(8);
+ mehRecord = SchemaBuilder.record("ns.Meh").fields().endRecord();
+
+ fooBarBaz = new ParseContext();
+ fooBarBaz.put(fooRecord);
+ fooBarBaz.put(barEnum);
+ fooBarBaz.put(bazFixed);
+ }
+
+ @Test
+ public void checkNewNameContextContainsPrimitives() {
+ EnumSet<Schema.Type> complexTypes = EnumSet.of(Schema.Type.RECORD,
Schema.Type.ENUM, Schema.Type.FIXED,
+ Schema.Type.UNION, Schema.Type.ARRAY, Schema.Type.MAP);
+ EnumSet<Schema.Type> primitives = EnumSet.complementOf(complexTypes);
+
+ ParseContext context = new ParseContext();
+ for (Schema.Type type : complexTypes) {
+ assertFalse(context.contains(type.getName()));
+ }
+ for (Schema.Type type : primitives) {
+ assertTrue(context.contains(type.getName()));
+ }
+ }
+
+ @Test
+ public void primitivesAreNotCached() {
+ EnumSet<Schema.Type> primitives =
EnumSet.complementOf(EnumSet.of(Schema.Type.RECORD, Schema.Type.ENUM,
+ Schema.Type.FIXED, Schema.Type.UNION, Schema.Type.ARRAY,
Schema.Type.MAP));
+
+ ParseContext context = new ParseContext();
+ for (Schema.Type type : primitives) {
+ Schema first = context.resolve(type.getName());
+ Schema second = context.resolve(type.getName());
+ assertEquals(first, second);
+ assertNotSame(first, second);
+
+ first.addProp("logicalType", "brick");
+ assertNotEquals(first, second);
+ }
+ }
+
+ @Test
+ public void validateSchemaRetrievalFailure() {
+ Schema unknown = Schema.createFixed("unknown", null, null, 0);
+
+ Schema unresolved = fooBarBaz.resolve("unknown");
+ assertTrue(SchemaResolver.isUnresolvedSchema(unresolved));
+ assertEquals(unknown.getFullName(),
SchemaResolver.getUnresolvedSchemaName(unresolved));
+ }
+
+ @Test
+ public void validateSchemaRetrievalByFullName() {
+ assertSame(fooRecord, fooBarBaz.resolve(fooRecord.getFullName()));
+ }
+
+ @Test
+ public void verifyPutIsIdempotent() {
+ ParseContext context = new ParseContext();
+ assertNotEquals(fooRecord, context.resolve(fooRecord.getFullName()));
+
+ context.put(fooRecord);
+ assertEquals(fooRecord, context.resolve(fooRecord.getFullName()));
+
+ context.put(fooRecord);
+ assertEquals(fooRecord, context.resolve(fooRecord.getFullName()));
+ }
+
+ @Test
+ public void verifyPutOnlyAcceptsNamedSchemas() {
+ ParseContext context = new ParseContext();
+ assertThrows(AvroRuntimeException.class, () ->
context.put(Schema.create(Schema.Type.STRING)));
+ }
+
+ @Test
+ public void verifyAddDoesNotAllowChangingSchemas() {
+ Schema fooEnum = SchemaBuilder.enumeration("ns.Foo").symbols();
+
+ ParseContext context = new ParseContext();
+ context.put(fooRecord);
+ assertThrows(AvroRuntimeException.class, () -> context.put(fooEnum));
+ }
+}
diff --git
a/lang/java/avro/src/test/java/org/apache/avro/SchemaNameValidatorTest.java
b/lang/java/avro/src/test/java/org/apache/avro/SchemaNameValidatorTest.java
index 6846c4434..871c17287 100644
--- a/lang/java/avro/src/test/java/org/apache/avro/SchemaNameValidatorTest.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/SchemaNameValidatorTest.java
@@ -28,32 +28,32 @@ class SchemaNameValidatorTest {
@ParameterizedTest
@MethodSource("data")
- void validator(Schema.NameValidator validator, String input, boolean
expectedResult) {
- Schema.NameValidator.Result result = validator.validate(input);
+ void validator(NameValidator validator, String input, boolean
expectedResult) {
+ NameValidator.Result result = validator.validate(input);
Assertions.assertEquals(expectedResult, result.isOK(), result.getErrors());
}
static Stream<Arguments> data() {
- return Stream.of(Arguments.of(Schema.NameValidator.UTF_VALIDATOR, null,
false), // null not accepted
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, null, false), //
null not accepted
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "", false), // empty
not accepted
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "", false), //
empty not accepted
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "Hello world",
false), // space not accepted
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "Hello world",
false), // space not accepted
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "H&", false), // non
letter or digit not accepted
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "H&", false), //
non letter or digit not accepted
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "H=", false), // non
letter or digit not accepted
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "H=", false), //
non letter or digit not accepted
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "H]", false), // non
letter or digit not accepted
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "H]", false), //
non letter or digit not accepted
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "Hello_world", true),
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "Hello_world",
true),
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "éà çô", true), //
Accept accent
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "éà çô", false), //
Not Accept accent
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "5éà çô", false), //
can't start with number
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "5éà çô", false),
// can't start with number
- Arguments.of(Schema.NameValidator.UTF_VALIDATOR, "_Hello_world", true),
- Arguments.of(Schema.NameValidator.STRICT_VALIDATOR, "_Hello_world",
true));
+ return Stream.of(Arguments.of(NameValidator.UTF_VALIDATOR, null, false),
// null not accepted
+ Arguments.of(NameValidator.STRICT_VALIDATOR, null, false), // null not
accepted
+ Arguments.of(NameValidator.UTF_VALIDATOR, "", false), // empty not
accepted
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "", false), // empty not
accepted
+ Arguments.of(NameValidator.UTF_VALIDATOR, "Hello world", false), //
space not accepted
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "Hello world", false), //
space not accepted
+ Arguments.of(NameValidator.UTF_VALIDATOR, "H&", false), // non letter
or digit not accepted
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "H&", false), // non
letter or digit not accepted
+ Arguments.of(NameValidator.UTF_VALIDATOR, "H=", false), // non letter
or digit not accepted
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "H=", false), // non
letter or digit not accepted
+ Arguments.of(NameValidator.UTF_VALIDATOR, "H]", false), // non letter
or digit not accepted
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "H]", false), // non
letter or digit not accepted
+ Arguments.of(NameValidator.UTF_VALIDATOR, "Hello_world", true),
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "Hello_world", true),
+ Arguments.of(NameValidator.UTF_VALIDATOR, "éà çô", true), // Accept
accent
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "éà çô", false), // Not
Accept accent
+ Arguments.of(NameValidator.UTF_VALIDATOR, "5éà çô", false), // can't
start with number
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "5éà çô", false), // can't
start with number
+ Arguments.of(NameValidator.UTF_VALIDATOR, "_Hello_world", true),
+ Arguments.of(NameValidator.STRICT_VALIDATOR, "_Hello_world", true));
}
}
diff --git
a/lang/java/avro/src/test/java/org/apache/avro/TestDataFileReader.java
b/lang/java/avro/src/test/java/org/apache/avro/TestDataFileReader.java
index 4b4f1c2d3..6ed6b35cc 100644
--- a/lang/java/avro/src/test/java/org/apache/avro/TestDataFileReader.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/TestDataFileReader.java
@@ -90,7 +90,7 @@ public class TestDataFileReader {
// magic header check. This happens with throttled input stream,
// where we read into buffer less bytes than requested.
- Schema legacySchema = new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).setValidateDefaults(false)
+ Schema legacySchema = new
Schema.Parser(NameValidator.NO_VALIDATION).setValidateDefaults(false)
.parse("{\"type\": \"record\", \"name\": \"TestSchema\", \"fields\": "
+ "[ {\"name\": \"id\", \"type\": [\"long\", \"null\"],
\"default\": null}]}");
File f = dataDir.resolve("testThrottledInputStream.avro").toFile();
@@ -149,7 +149,7 @@ public class TestDataFileReader {
// AVRO-2944 describes hanging/failure in reading Avro file with
performing
// magic header check. This potentially happens with a defective input
stream
// where a -1 value is unexpectedly returned from a read.
- Schema legacySchema = new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).setValidateDefaults(false)
+ Schema legacySchema = new
Schema.Parser(NameValidator.NO_VALIDATION).setValidateDefaults(false)
.parse("{\"type\": \"record\", \"name\": \"TestSchema\", \"fields\":
"
+ "[ {\"name\": \"id\", \"type\": [\"long\", \"null\"],
\"default\": null}]}");
File f = dataDir.resolve("testInputStreamEOF.avro").toFile();
@@ -198,7 +198,7 @@ public class TestDataFileReader {
// This schema has an accent in the name and the default for the field
doesn't
// match the first type in the union. A Java SDK in the past could create
a file
// containing this schema.
- Schema legacySchema = new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).setValidateDefaults(false)
+ Schema legacySchema = new
Schema.Parser(NameValidator.NO_VALIDATION).setValidateDefaults(false)
.parse("{\"type\": \"record\", \"name\":
\"InvalidAccëntWithInvalidNull\", \"fields\": "
+ "[ {\"name\": \"id\", \"type\": [\"long\", \"null\"],
\"default\": null}]}");
diff --git a/lang/java/avro/src/test/java/org/apache/avro/TestSchema.java
b/lang/java/avro/src/test/java/org/apache/avro/TestSchema.java
index 64748da13..805f2b80b 100644
--- a/lang/java/avro/src/test/java/org/apache/avro/TestSchema.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/TestSchema.java
@@ -553,14 +553,14 @@ public class TestSchema {
@Test
void testContentAfterAvsc() {
- Schema.Parser parser = new
Schema.Parser(Schema.NameValidator.UTF_VALIDATOR);
+ Schema.Parser parser = new Schema.Parser(NameValidator.UTF_VALIDATOR);
parser.setValidateDefaults(true);
assertThrows(SchemaParseException.class, () -> parser.parse("{\"type\":
\"string\"}; DROP TABLE STUDENTS"));
}
@Test
void testContentAfterAvscInInputStream() throws Exception {
- Schema.Parser parser = new
Schema.Parser(Schema.NameValidator.UTF_VALIDATOR);
+ Schema.Parser parser = new Schema.Parser(NameValidator.UTF_VALIDATOR);
parser.setValidateDefaults(true);
String avsc = "{\"type\": \"string\"}; DROP TABLE STUDENTS";
ByteArrayInputStream is = new
ByteArrayInputStream(avsc.getBytes(StandardCharsets.UTF_8));
@@ -576,7 +576,7 @@ public class TestSchema {
writer.flush();
}
- Schema.Parser parser = new
Schema.Parser(Schema.NameValidator.UTF_VALIDATOR);
+ Schema.Parser parser = new Schema.Parser(NameValidator.UTF_VALIDATOR);
parser.setValidateDefaults(true);
assertThrows(SchemaParseException.class, () -> parser.parse(avscFile));
}
diff --git
a/lang/java/avro/src/test/java/org/apache/avro/TestSchemaBuilder.java
b/lang/java/avro/src/test/java/org/apache/avro/TestSchemaBuilder.java
index 293554e8e..fdb18d0f8 100644
--- a/lang/java/avro/src/test/java/org/apache/avro/TestSchemaBuilder.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/TestSchemaBuilder.java
@@ -882,7 +882,7 @@ public class TestSchemaBuilder {
void namesAcceptAll() throws InterruptedException {
// Ensure that Schema.setNameValidator won't interfere with others unit
tests.
Runnable r = () -> {
- Schema.setNameValidator(Schema.NameValidator.NO_VALIDATION);
+ Schema.setNameValidator(NameValidator.NO_VALIDATION);
final Schema schema =
SchemaBuilder.record("7name").fields().name("123").type(Schema.create(Schema.Type.INT))
.noDefault().endRecord();
Assertions.assertNotNull(schema);
diff --git a/lang/java/avro/src/test/java/org/apache/avro/TestSchemaParser.java
b/lang/java/avro/src/test/java/org/apache/avro/TestSchemaParser.java
new file mode 100644
index 000000000..dc0c77431
--- /dev/null
+++ b/lang/java/avro/src/test/java/org/apache/avro/TestSchemaParser.java
@@ -0,0 +1,107 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.StringReader;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static java.util.Collections.singletonList;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class TestSchemaParser {
+ private static final Schema SCHEMA_REAL = Schema.createFixed("Real", null,
"tests", 42);
+ private static final String SCHEMA_JSON = SCHEMA_REAL.toString(false);
+
+ @Test
+ void testParseFile() throws IOException {
+ Path tempFile = Files.createTempFile("TestSchemaParser", null);
+ Files.write(tempFile, singletonList(SCHEMA_JSON));
+
+ Schema schema = new SchemaParser().parse(tempFile.toFile());
+ assertEquals(SCHEMA_REAL, schema);
+ }
+
+ @Test
+ void testParsePath() throws IOException {
+ Path tempFile = Files.createTempFile("TestSchemaParser", null);
+ Files.write(tempFile, singletonList(SCHEMA_JSON));
+
+ Schema schema = new SchemaParser().parse(tempFile);
+ assertEquals(SCHEMA_REAL, schema);
+ }
+
+ @Test
+ void testParseReader() throws IOException {
+ Schema schema = new SchemaParser().parse(new StringReader(SCHEMA_JSON));
+ assertEquals(SCHEMA_REAL, schema);
+ }
+
+ @Test
+ void testParseStream() throws IOException {
+ Schema schema = new SchemaParser().parse(new
ByteArrayInputStream(SCHEMA_JSON.getBytes(StandardCharsets.UTF_16)));
+ assertEquals(SCHEMA_REAL, schema);
+ }
+
+ @Test
+ void testParseTextWithFallbackJsonParser() {
+ Schema schema = new SchemaParser().parse(SCHEMA_JSON);
+ assertEquals(SCHEMA_REAL, schema);
+ }
+
+ @Test
+ void testParseByCustomParser() {
+ Schema schema = new
SchemaParser().parse(DummySchemaParser.SCHEMA_TEXT_ONE);
+ assertEquals(DummySchemaParser.FIXED_SCHEMA, schema);
+ }
+
+ @Test
+ void testSingleParseError() {
+ SchemaParseException parseException =
assertThrows(SchemaParseException.class,
+ () -> new SchemaParser().parse("foo"));
+ assertEquals(JsonParseException.class,
parseException.getCause().getClass());
+ assertEquals(0, parseException.getSuppressed().length);
+ }
+
+ @Test
+ void testMultipleParseErrors() {
+ SchemaParseException parseException =
assertThrows(SchemaParseException.class,
+ () -> new SchemaParser().parse(DummySchemaParser.SCHEMA_TEXT_ERROR));
+ assertTrue(parseException.getMessage().startsWith("Could not parse the
schema"));
+ Throwable[] suppressed = parseException.getSuppressed();
+ assertEquals(2, suppressed.length);
+ assertEquals(DummySchemaParser.ERROR_MESSAGE, suppressed[0].getMessage());
+ assertEquals(JsonParseException.class,
suppressed[1].getCause().getClass());
+ }
+
+ @Test
+ void testIOFailureWhileParsingText() {
+ AvroRuntimeException exception = assertThrows(AvroRuntimeException.class,
+ () -> new
SchemaParser().parse(DummySchemaParser.SCHEMA_TEXT_IO_ERROR));
+ assertEquals(IOException.class, exception.getCause().getClass());
+ assertEquals(DummySchemaParser.IO_ERROR_MESSAGE,
exception.getCause().getMessage());
+ }
+}
diff --git
a/lang/java/avro/src/test/java/org/apache/avro/reflect/TestReflect.java
b/lang/java/avro/src/test/java/org/apache/avro/reflect/TestReflect.java
index 5f52a2cf7..2a7591616 100644
--- a/lang/java/avro/src/test/java/org/apache/avro/reflect/TestReflect.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/reflect/TestReflect.java
@@ -38,6 +38,7 @@ import java.util.Random;
import org.apache.avro.AvroRuntimeException;
import org.apache.avro.AvroTypeException;
import org.apache.avro.JsonProperties;
+import org.apache.avro.NameValidator;
import org.apache.avro.Protocol;
import org.apache.avro.Schema;
import org.apache.avro.Schema.Field;
@@ -1260,7 +1261,7 @@ public class TestReflect {
@Test
void dollarTerminatedNamespaceCompatibility() {
ReflectData data = ReflectData.get();
- Schema s = new Schema.Parser(Schema.NameValidator.NO_VALIDATION).parse(
+ Schema s = new Schema.Parser(NameValidator.NO_VALIDATION).parse(
"{\"type\":\"record\",\"name\":\"Z\",\"namespace\":\"org.apache.avro.reflect.TestReflect$\",\"fields\":[]}");
assertEquals(data.getSchema(data.getClass(s)).toString(),
"{\"type\":\"record\",\"name\":\"Z\",\"namespace\":\"org.apache.avro.reflect.TestReflect\",\"fields\":[]}");
@@ -1270,7 +1271,7 @@ public class TestReflect {
void dollarTerminatedNestedStaticClassNamespaceCompatibility() {
ReflectData data = ReflectData.get();
// Older versions of Avro generated this namespace on nested records.
- Schema s = new Schema.Parser(Schema.NameValidator.NO_VALIDATION).parse(
+ Schema s = new Schema.Parser(NameValidator.NO_VALIDATION).parse(
"{\"type\":\"record\",\"name\":\"AnotherSampleRecord\",\"namespace\":\"org.apache.avro.reflect.TestReflect$SampleRecord\",\"fields\":[]}");
assertThat(data.getSchema(data.getClass(s)).getFullName(),
is("org.apache.avro.reflect.TestReflect.SampleRecord.AnotherSampleRecord"));
diff --git
a/lang/java/idl/src/test/java/org/apache/avro/idl/TestSchemaResolver.java
b/lang/java/avro/src/test/java/org/apache/avro/util/TestSchemaResolver.java
similarity index 62%
rename from
lang/java/idl/src/test/java/org/apache/avro/idl/TestSchemaResolver.java
rename to
lang/java/avro/src/test/java/org/apache/avro/util/TestSchemaResolver.java
index 704882325..1a340b7fa 100644
--- a/lang/java/idl/src/test/java/org/apache/avro/idl/TestSchemaResolver.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/util/TestSchemaResolver.java
@@ -1,3 +1,21 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
/*
* Copyright 2017 The Apache Software Foundation.
*
@@ -13,32 +31,25 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.avro.idl;
+package org.apache.avro.util;
-import org.apache.avro.Protocol;
import org.apache.avro.Schema;
import org.apache.avro.SchemaBuilder;
-import org.junit.Assert;
import org.junit.Test;
import java.io.IOException;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Path;
-import java.nio.file.Paths;
public class TestSchemaResolver {
@Test
public void testResolving() throws IOException {
- Path testIdl = Paths.get(".", "src", "test", "idl",
"cycle.avdl").toAbsolutePath();
- IdlReader parser = new IdlReader();
- IdlFile idlFile = parser.parse(testIdl);
- Protocol protocol = idlFile.getProtocol();
- System.out.println(protocol);
- Assert.assertEquals(5, protocol.getTypes().size());
+ // Path testIdl = Paths.get(".", "src", "test", "idl",
+ // "cycle.avdl").toAbsolutePath();
+ // IdlReader parser = new IdlReader();
+ // IdlFile idlFile = parser.parse(testIdl);
+ // Protocol protocol = idlFile.getProtocol();
+ // System.out.println(protocol);
+ // Assert.assertEquals(5, protocol.getTypes().size());
}
@Test(expected = IllegalArgumentException.class)
diff --git a/lang/java/idl/src/test/java/org/apache/avro/idl/TestSchemas.java
b/lang/java/avro/src/test/java/org/apache/avro/util/TestSchemas.java
similarity index 90%
rename from lang/java/idl/src/test/java/org/apache/avro/idl/TestSchemas.java
rename to lang/java/avro/src/test/java/org/apache/avro/util/TestSchemas.java
index 000ba20db..660981929 100644
--- a/lang/java/idl/src/test/java/org/apache/avro/idl/TestSchemas.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/util/TestSchemas.java
@@ -1,3 +1,21 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
/*
* Copyright 2017 The Apache Software Foundation.
*
@@ -13,7 +31,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.avro.idl;
+package org.apache.avro.util;
import org.apache.avro.Schema;
import org.junit.Assert;
diff --git
a/lang/java/avro/src/test/java/org/apache/avro/util/UtfTextUtilsTest.java
b/lang/java/avro/src/test/java/org/apache/avro/util/UtfTextUtilsTest.java
new file mode 100644
index 000000000..6c525e6d3
--- /dev/null
+++ b/lang/java/avro/src/test/java/org/apache/avro/util/UtfTextUtilsTest.java
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro.util;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@SuppressWarnings("SpellCheckingInspection")
+class UtfTextUtilsTest {
+ @Test
+ void validateCharsetDetectionWithBOM() {
+ assertEquals("UTF-32", testDetection("0000FEFF").name());
+ assertEquals("UTF-32", testDetection("FFFE0000").name());
+ assertEquals("UTF-16", testDetection("FEFF0041").name());
+ assertEquals("UTF-16", testDetection("FFFE4100").name());
+ assertEquals("UTF-8", testDetection("EFBBBF41").name());
+
+ // Invalid UCS-4 encodings: these we're certain we cannot handle.
+ assertThrows(IllegalArgumentException.class, () ->
testDetection("0000FFFE"));
+ assertThrows(IllegalArgumentException.class, () ->
testDetection("FEFF0000"));
+ }
+
+ @Test
+ void validateCharsetDetectionWithoutBOM() {
+ assertEquals("UTF-32BE", testDetection("00000041").name());
+ assertEquals("UTF-32LE", testDetection("41000000").name());
+ assertEquals("UTF-16BE", testDetection("00410042").name());
+ assertEquals("UTF-16LE", testDetection("41004200").name());
+ assertEquals("UTF-8", testDetection("41424344").name());
+
+ assertEquals("UTF-8", testDetection("414243").name());
+
+ assertEquals("UTF-16BE", testDetection("0041").name());
+ assertEquals("UTF-16LE", testDetection("4100").name());
+ assertEquals("UTF-8", testDetection("4142").name());
+
+ assertEquals("UTF-8", testDetection("41").name());
+
+ assertEquals("UTF-8", testDetection("").name());
+
+ // Invalid UCS-4 encodings: these we're fairly certain we cannot handle.
+ assertThrows(IllegalArgumentException.class, () ->
testDetection("00004100"));
+ assertThrows(IllegalArgumentException.class, () ->
testDetection("00410000"));
+ }
+
+ private Charset testDetection(String hexBytes) {
+ return UtfTextUtils.detectUtfCharset(hexBytes(hexBytes));
+ }
+
+ private static byte[] hexBytes(String hexBytes) {
+ byte[] bytes = new byte[hexBytes.length() / 2];
+ for (int i = 0; i < bytes.length; i++) {
+ int index = i * 2;
+ bytes[i] = (byte) Integer.parseUnsignedInt(hexBytes.substring(index,
index + 2), 16);
+ }
+ return bytes;
+ }
+
+ @Test
+ void validateTextConversionFromBytes() {
+ assertEquals("A", UtfTextUtils.asString(hexBytes("EFBBBF41"),
StandardCharsets.UTF_8));
+ assertEquals("A", UtfTextUtils.asString(hexBytes("EFBBBF41"), null));
+
+ assertEquals("A", UtfTextUtils.asString(hexBytes("41"),
StandardCharsets.UTF_8));
+ assertEquals("A", UtfTextUtils.asString(hexBytes("41"), null));
+ }
+
+ @Test
+ void validateTextConversionFromStreams() throws IOException {
+ assertEquals("A",
+ UtfTextUtils.readAllBytes(new
ByteArrayInputStream(hexBytes("EFBBBF41")), StandardCharsets.UTF_8));
+ assertEquals("A", UtfTextUtils.readAllBytes(new
ByteArrayInputStream(hexBytes("EFBBBF41")), null));
+
+ assertEquals("A", UtfTextUtils.readAllBytes(new
ByteArrayInputStream(hexBytes("41")), StandardCharsets.UTF_8));
+ assertEquals("A", UtfTextUtils.readAllBytes(new
ByteArrayInputStream(hexBytes("41")), null));
+
+ // Invalid UCS-4 encoding should throw an IOException instead of an
+ // IllegalArgumentException.
+ assertThrows(IOException.class,
+ () -> UtfTextUtils.readAllBytes(new
ByteArrayInputStream(hexBytes("0000FFFE")), null));
+ }
+
+ @Test
+ void validateSupportForUnmarkableStreams() throws IOException {
+ assertEquals("ABCD",
+ UtfTextUtils.readAllBytes(new UnmarkableInputStream(new
ByteArrayInputStream(hexBytes("41424344"))), null));
+ }
+
+ private static class UnmarkableInputStream extends FilterInputStream {
+ public UnmarkableInputStream(InputStream input) {
+ super(input);
+ }
+
+ @Override
+ public synchronized void mark(int ignored) {
+ }
+
+ @Override
+ public synchronized void reset() throws IOException {
+ throw new IOException("mark/reset not supported");
+ }
+
+ @Override
+ public boolean markSupported() {
+ return false;
+ }
+ }
+}
diff --git
a/lang/java/avro/src/test/resources/META-INF/services/org.apache.avro.FormattedSchemaParser
b/lang/java/avro/src/test/resources/META-INF/services/org.apache.avro.FormattedSchemaParser
new file mode 100644
index 000000000..b2db6ddb2
--- /dev/null
+++
b/lang/java/avro/src/test/resources/META-INF/services/org.apache.avro.FormattedSchemaParser
@@ -0,0 +1,18 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+org.apache.avro.DummySchemaParser
diff --git a/lang/java/build.sh b/lang/java/build.sh
index 96fdb3489..976f67dab 100755
--- a/lang/java/build.sh
+++ b/lang/java/build.sh
@@ -16,6 +16,7 @@
# limitations under the License.
set -e
+set -x
usage() {
echo "Usage: $0 {lint|test|dist|clean}"
@@ -33,7 +34,7 @@ main() {
test)
mvn -B test
# Test the modules that depend on hadoop using Hadoop 2
- mvn -B test -Phadoop2
+ mvn -Dmaven.build.cache.enabled=false -B test -Phadoop2
;;
dist)
mvn -P dist package -DskipTests javadoc:aggregate
diff --git a/lang/java/idl/pom.xml b/lang/java/idl/pom.xml
index 6363ec150..7826cf42b 100644
--- a/lang/java/idl/pom.xml
+++ b/lang/java/idl/pom.xml
@@ -102,6 +102,7 @@
<configuration>
<sourceDirectory>${project.basedir}/../../../share/idl_grammar</sourceDirectory>
<libDirectory>${project.basedir}/../../../share/idl_grammar/imports</libDirectory>
+ <treatWarningsAsErrors>true</treatWarningsAsErrors>
<listener>true</listener>
<visitor>false</visitor>
</configuration>
diff --git a/lang/java/idl/src/main/java/org/apache/avro/idl/IdlFile.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/IdlFile.java
index b3777c9f7..75d0f73fa 100644
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/IdlFile.java
+++ b/lang/java/idl/src/main/java/org/apache/avro/idl/IdlFile.java
@@ -34,21 +34,18 @@ import java.util.stream.Collectors;
public class IdlFile {
private final Schema mainSchema;
private final Protocol protocol;
- private final String namespace;
private final Map<String, Schema> namedSchemas;
private final List<String> warnings;
IdlFile(Protocol protocol, List<String> warnings) {
- this(protocol.getNamespace(), protocol.getTypes(), null, protocol,
warnings);
+ this(protocol.getTypes(), null, protocol, warnings);
}
- IdlFile(String namespace, Schema mainSchema, Iterable<Schema> schemas,
List<String> warnings) {
- this(namespace, schemas, mainSchema, null, warnings);
+ IdlFile(Schema mainSchema, Iterable<Schema> schemas, List<String> warnings) {
+ this(schemas, mainSchema, null, warnings);
}
- private IdlFile(String namespace, Iterable<Schema> schemas, Schema
mainSchema, Protocol protocol,
- List<String> warnings) {
- this.namespace = namespace;
+ private IdlFile(Iterable<Schema> schemas, Schema mainSchema, Protocol
protocol, List<String> warnings) {
this.namedSchemas = new LinkedHashMap<>();
for (Schema namedSchema : schemas) {
this.namedSchemas.put(namedSchema.getFullName(), namedSchema);
@@ -82,13 +79,6 @@ public class IdlFile {
.collect(Collectors.toList());
}
- /**
- * The default namespace to resolve schema names against.
- */
- public String getNamespace() {
- return namespace;
- }
-
/**
* The named schemas defined by the IDL file, mapped by their full name.
*/
@@ -105,14 +95,7 @@ public class IdlFile {
* @return the schema, or {@code null} if it does not exist
*/
public Schema getNamedSchema(String name) {
- Schema result = namedSchemas.get(name);
- if (result != null) {
- return result;
- }
- if (namespace != null && !name.contains(".")) {
- result = namedSchemas.get(namespace + '.' + name);
- }
- return result;
+ return namedSchemas.get(name);
}
// Visible for testing
diff --git a/lang/java/idl/src/main/java/org/apache/avro/idl/IdlReader.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/IdlReader.java
index f2419f5f5..047d16287 100644
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/IdlReader.java
+++ b/lang/java/idl/src/main/java/org/apache/avro/idl/IdlReader.java
@@ -35,8 +35,11 @@ import org.antlr.v4.runtime.RecognitionException;
import org.antlr.v4.runtime.Recognizer;
import org.antlr.v4.runtime.Token;
import org.apache.avro.JsonProperties;
+import org.apache.avro.JsonSchemaParser;
import org.apache.avro.LogicalType;
import org.apache.avro.LogicalTypes;
+import org.apache.avro.NameValidator;
+import org.apache.avro.ParseContext;
import org.apache.avro.Protocol;
import org.apache.avro.Schema;
import org.apache.avro.SchemaParseException;
@@ -68,6 +71,8 @@ import org.apache.avro.idl.IdlParser.ResultTypeContext;
import org.apache.avro.idl.IdlParser.SchemaPropertyContext;
import org.apache.avro.idl.IdlParser.UnionTypeContext;
import org.apache.avro.idl.IdlParser.VariableDeclarationContext;
+import org.apache.avro.util.SchemaResolver;
+import org.apache.avro.util.UtfTextUtils;
import org.apache.avro.util.internal.Accessor;
import org.apache.commons.text.StringEscapeUtils;
@@ -99,7 +104,6 @@ import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static java.util.Collections.singleton;
-import static java.util.Collections.unmodifiableMap;
public class IdlReader {
/**
@@ -134,50 +138,47 @@ public class IdlReader {
* Predicate to check for valid names. Should probably be delegated to the
* Schema class.
*/
- private static final Predicate<String> VALID_NAME =
Pattern.compile("[_\\p{L}][_\\p{L}\\d]*").asPredicate();
+ private static final Predicate<String> VALID_NAME = Pattern
+ .compile("[_\\p{L}][_\\p{LD}]*", Pattern.UNICODE_CHARACTER_CLASS |
Pattern.UNICODE_CASE | Pattern.CANON_EQ)
+ .asPredicate();
+
private static final Set<String> INVALID_TYPE_NAMES = new
HashSet<>(Arrays.asList("boolean", "int", "long", "float",
"double", "bytes", "string", "null", "date", "time_ms", "timestamp_ms",
"localtimestamp_ms", "uuid"));
private static final String CLASSPATH_SCHEME = "classpath";
private final Set<URI> readLocations;
- private final Map<String, Schema> names;
+ private final ParseContext parseContext;
public IdlReader() {
- readLocations = new HashSet<>();
- names = new LinkedHashMap<>();
+ this(new ParseContext());
}
- public Map<String, Schema> getTypes() {
- return unmodifiableMap(names);
+ public IdlReader(NameValidator nameValidator) {
+ this(new ParseContext(nameValidator));
}
- private Schema namedSchemaOrUnresolved(String fullName) {
- Schema schema = names.get(fullName);
- if (schema == null) {
- schema = SchemaResolver.unresolvedSchema(fullName);
- }
- return schema;
+ public IdlReader(ParseContext parseContext) {
+ readLocations = new HashSet<>();
+ this.parseContext = parseContext;
}
- private void setTypes(Map<String, Schema> types) {
- names.clear();
- for (Schema schema : types.values()) {
- addSchema(schema);
- }
+ private Schema namedSchemaOrUnresolved(String fullName) {
+ return parseContext.resolve(fullName);
}
- public void addTypes(Map<String, Schema> types) {
- for (Schema schema : types.values()) {
- addSchema(schema);
- }
+ private void addSchema(Schema schema) {
+ parseContext.put(schema);
}
- private void addSchema(Schema schema) {
- String fullName = schema.getFullName();
- if (names.containsKey(fullName)) {
- throw new SchemaParseException("Can't redefine: " + fullName);
+ public IdlFile resolve(IdlFile unresolved) {
+ Protocol protocol = unresolved.getProtocol();
+ if (protocol == null) {
+ Schema mainSchema = SchemaResolver.resolve(parseContext,
unresolved.getMainSchema());
+ Iterable<Schema> namedSchemas = SchemaResolver.resolve(parseContext,
unresolved.getNamedSchemas().values());
+ return new IdlFile(mainSchema, namedSchemas, unresolved.getWarnings());
+ } else {
+ return new IdlFile(SchemaResolver.resolve(parseContext, protocol),
unresolved.getWarnings());
}
- names.put(fullName, schema);
}
public IdlFile parse(Path location) throws IOException {
@@ -185,20 +186,28 @@ public class IdlReader {
}
IdlFile parse(URI location) throws IOException {
- try (InputStream stream = location.toURL().openStream()) {
- readLocations.add(location);
- URI inputDir = location;
- if ("jar".equals(location.getScheme())) {
- String jarUriAsString = location.toString();
- String pathFromJarRoot =
jarUriAsString.substring(jarUriAsString.indexOf("!/") + 2);
- inputDir = URI.create(CLASSPATH_SCHEME + ":/" + pathFromJarRoot);
- }
- inputDir = inputDir.resolve(".");
+ readLocations.add(location);
+ URI inputDir = location;
+ if ("jar".equals(location.getScheme())) {
+ String jarUriAsString = location.toString();
+ String pathFromJarRoot =
jarUriAsString.substring(jarUriAsString.indexOf("!/") + 2);
+ inputDir = URI.create(CLASSPATH_SCHEME + ":/" + pathFromJarRoot);
+ }
+ inputDir = inputDir.resolve(".");
- return parse(inputDir, CharStreams.fromStream(stream,
StandardCharsets.UTF_8));
+ try (InputStream stream = location.toURL().openStream()) {
+ String inputString = UtfTextUtils.readAllBytes(stream, null);
+ return parse(inputDir, CharStreams.fromString(inputString));
}
}
+ /**
+ * Parse an IDL file from a string, using the given directory for imports.
+ */
+ public IdlFile parse(URI directory, CharSequence source) throws IOException {
+ return parse(directory, CharStreams.fromString(source.toString()));
+ }
+
/**
* Parse an IDL file from a stream. This method cannot handle imports.
*/
@@ -219,8 +228,14 @@ public class IdlReader {
parser.setTrace(false);
parser.setBuildParseTree(false);
- // Trigger parsing.
- parser.idlFile();
+ try {
+ // Trigger parsing.
+ parser.idlFile();
+ } catch (SchemaParseException e) {
+ throw e;
+ } catch (RuntimeException e) {
+ throw new SchemaParseException(e);
+ }
return parseListener.getIdlFile();
}
@@ -348,13 +363,11 @@ public class IdlReader {
@Override
public void exitIdlFile(IdlFileContext ctx) {
- IdlFile unresolved;
if (protocol == null) {
- unresolved = new IdlFile(currentNamespace(), mainSchema,
getTypes().values(), warnings);
+ result = new IdlFile(mainSchema, parseContext.typesByName().values(),
warnings);
} else {
- unresolved = new IdlFile(protocol, warnings);
+ result = new IdlFile(protocol, warnings);
}
- result = SchemaResolver.resolve(unresolved,
OPTIONAL_NULLABLE_TYPE_PROPERTY);
}
@Override
@@ -378,7 +391,7 @@ public class IdlReader {
@Override
public void exitProtocolDeclaration(ProtocolDeclarationContext ctx) {
if (protocol != null)
- protocol.setTypes(getTypes().values());
+ protocol.setTypes(parseContext.typesByName().values());
if (!namespaces.isEmpty())
popNamespace();
}
@@ -440,10 +453,8 @@ public class IdlReader {
break;
case IdlParser.Schema:
try (InputStream stream = importLocation.toURL().openStream()) {
- Schema.Parser parser = new Schema.Parser();
- parser.addTypes(getTypes().values()); // inherit names
- parser.parse(stream);
- setTypes(parser.getTypes()); // update names
+ JsonSchemaParser parser = new JsonSchemaParser();
+ parser.parse(parseContext, importLocation.resolve("."),
UtfTextUtils.readAllBytes(stream, null));
}
break;
}
@@ -671,18 +682,22 @@ public class IdlReader {
*/
private Schema fixOptionalSchema(Schema schema, JsonNode defaultValue) {
Object optionalType =
schema.getObjectProp(OPTIONAL_NULLABLE_TYPE_PROPERTY);
- if (optionalType != null) {
- // The schema is a union schema with 2 types: "null" and a non-"null"
schema
- Schema nullSchema = schema.getTypes().get(0);
- Schema nonNullSchema = schema.getTypes().get(1);
- boolean nonNullDefault = defaultValue != null &&
!defaultValue.isNull();
-
- // Note: the resolving visitor we'll use later drops the marker
property.
- if (nonNullDefault) {
- return Schema.createUnion(nonNullSchema, nullSchema);
- }
+ if (optionalType == null) {
+ return schema;
+ }
+
+ // The schema is a union schema with 2 types: "null" and a non-"null"
+ // schema. The result of this method must not have the property
+ // OPTIONAL_NULLABLE_TYPE_PROPERTY.
+ Schema nullSchema = schema.getTypes().get(0);
+ Schema nonNullSchema = schema.getTypes().get(1);
+ boolean nonNullDefault = defaultValue != null && !defaultValue.isNull();
+
+ if (nonNullDefault) {
+ return Schema.createUnion(nonNullSchema, nullSchema);
+ } else {
+ return Schema.createUnion(nullSchema, nonNullSchema);
}
- return schema;
}
@Override
diff --git
a/lang/java/idl/src/main/java/org/apache/avro/idl/IdlSchemaParser.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/IdlSchemaParser.java
new file mode 100644
index 000000000..618ac6254
--- /dev/null
+++ b/lang/java/idl/src/main/java/org/apache/avro/idl/IdlSchemaParser.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.avro.idl;
+
+import org.apache.avro.FormattedSchemaParser;
+import org.apache.avro.ParseContext;
+import org.apache.avro.Schema;
+import org.apache.avro.SchemaParseException;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.regex.Pattern;
+
+public class IdlSchemaParser implements FormattedSchemaParser {
+
+ @Override
+ public Schema parse(ParseContext parseContext, URI baseUri, CharSequence
formattedSchema)
+ throws IOException, SchemaParseException {
+ boolean valid = Pattern.compile("^\\A*!" + // Initial whitespace
+ "(?:/\\*(?:[^*]|\\*[^/])*!\\*/\\s*!|//(!=\\R)*!\\R\\s*!)*!" + //
Comments
+ "(?:namespace|schema|protocol|record|enum|fixed|import)\\s", // First
keyword
+ Pattern.UNICODE_CHARACTER_CLASS |
Pattern.MULTILINE).matcher(formattedSchema).find();
+ if (valid) {
+ IdlReader idlReader = new IdlReader(parseContext);
+ IdlFile idlFile = idlReader.parse(baseUri, formattedSchema);
+ return idlFile.getMainSchema();
+ }
+ return null;
+ }
+}
diff --git
a/lang/java/idl/src/main/java/org/apache/avro/idl/IsResolvedSchemaVisitor.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/IsResolvedSchemaVisitor.java
deleted file mode 100644
index 12fd5dbff..000000000
---
a/lang/java/idl/src/main/java/org/apache/avro/idl/IsResolvedSchemaVisitor.java
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.avro.idl;
-
-import org.apache.avro.Schema;
-
-/**
- * This visitor checks if the current schema is fully resolved.
- */
-public final class IsResolvedSchemaVisitor implements SchemaVisitor<Boolean> {
- boolean hasUnresolvedParts;
-
- IsResolvedSchemaVisitor() {
- hasUnresolvedParts = false;
- }
-
- @Override
- public SchemaVisitorAction visitTerminal(Schema terminal) {
- hasUnresolvedParts = SchemaResolver.isUnresolvedSchema(terminal);
- return hasUnresolvedParts ? SchemaVisitorAction.TERMINATE :
SchemaVisitorAction.CONTINUE;
- }
-
- @Override
- public SchemaVisitorAction visitNonTerminal(Schema nonTerminal) {
- hasUnresolvedParts = SchemaResolver.isUnresolvedSchema(nonTerminal);
- if (hasUnresolvedParts) {
- return SchemaVisitorAction.TERMINATE;
- }
- if (nonTerminal.getType() == Schema.Type.RECORD &&
!nonTerminal.hasFields()) {
- // We're still initializing the type...
- return SchemaVisitorAction.SKIP_SUBTREE;
- }
- return SchemaVisitorAction.CONTINUE;
- }
-
- @Override
- public SchemaVisitorAction afterVisitNonTerminal(Schema nonTerminal) {
- return SchemaVisitorAction.CONTINUE;
- }
-
- @Override
- public Boolean get() {
- return !hasUnresolvedParts;
- }
-}
diff --git
a/lang/java/idl/src/main/java/org/apache/avro/idl/ResolvingVisitor.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/ResolvingVisitor.java
deleted file mode 100644
index 04e41f340..000000000
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/ResolvingVisitor.java
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.avro.idl;
-
-import org.apache.avro.AvroTypeException;
-import org.apache.avro.Schema;
-import org.apache.avro.Schema.Field;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.EnumSet;
-import java.util.HashSet;
-import java.util.IdentityHashMap;
-import java.util.List;
-import java.util.Optional;
-import java.util.Set;
-import java.util.function.Function;
-
-import static org.apache.avro.Schema.Type.ARRAY;
-import static org.apache.avro.Schema.Type.ENUM;
-import static org.apache.avro.Schema.Type.FIXED;
-import static org.apache.avro.Schema.Type.MAP;
-import static org.apache.avro.Schema.Type.RECORD;
-import static org.apache.avro.Schema.Type.UNION;
-
-/**
- * This visitor creates clone of the visited Schemata, minus the specified
- * schema properties, and resolves all unresolved schemas.
- */
-public final class ResolvingVisitor implements SchemaVisitor<Schema> {
- private static final Set<Schema.Type> CONTAINER_SCHEMA_TYPES =
EnumSet.of(RECORD, ARRAY, MAP, UNION);
- private static final Set<Schema.Type> NAMED_SCHEMA_TYPES =
EnumSet.of(RECORD, ENUM, FIXED);
-
- private final Function<String, Schema> symbolTable;
- private final Set<String> schemaPropertiesToRemove;
- private final IdentityHashMap<Schema, Schema> replace;
-
- private final Schema root;
-
- public ResolvingVisitor(final Schema root, final Function<String, Schema>
symbolTable,
- String... schemaPropertiesToRemove) {
- this(root, symbolTable, new
HashSet<>(Arrays.asList(schemaPropertiesToRemove)));
- }
-
- public ResolvingVisitor(final Schema root, final Function<String, Schema>
symbolTable,
- Set<String> schemaPropertiesToRemove) {
- this.replace = new IdentityHashMap<>();
- this.symbolTable = symbolTable;
- this.schemaPropertiesToRemove = schemaPropertiesToRemove;
-
- this.root = root;
- }
-
- public ResolvingVisitor withRoot(Schema root) {
- return new ResolvingVisitor(root, symbolTable, schemaPropertiesToRemove);
- }
-
- @Override
- public SchemaVisitorAction visitTerminal(final Schema terminal) {
- Schema.Type type = terminal.getType();
- Schema newSchema;
- if (CONTAINER_SCHEMA_TYPES.contains(type)) {
- if (!replace.containsKey(terminal)) {
- throw new IllegalStateException("Schema " + terminal + " must be
already processed");
- }
- return SchemaVisitorAction.CONTINUE;
- } else if (type == ENUM) {
- newSchema = Schema.createEnum(terminal.getName(), terminal.getDoc(),
terminal.getNamespace(),
- terminal.getEnumSymbols(), terminal.getEnumDefault());
- } else if (type == FIXED) {
- newSchema = Schema.createFixed(terminal.getName(), terminal.getDoc(),
terminal.getNamespace(),
- terminal.getFixedSize());
- } else {
- newSchema = Schema.create(type);
- }
- copyProperties(terminal, newSchema);
- replace.put(terminal, newSchema);
- return SchemaVisitorAction.CONTINUE;
- }
-
- public void copyProperties(final Schema first, final Schema second) {
- // Logical type
- Optional.ofNullable(first.getLogicalType()).ifPresent(logicalType ->
logicalType.addToSchema(second));
-
- // Aliases (if applicable)
- if (NAMED_SCHEMA_TYPES.contains(first.getType())) {
- first.getAliases().forEach(second::addAlias);
- }
-
- // Other properties
- first.getObjectProps().forEach((name, value) -> {
- if (!schemaPropertiesToRemove.contains(name)) {
- second.addProp(name, value);
- }
- });
- }
-
- @Override
- public SchemaVisitorAction visitNonTerminal(final Schema nt) {
- Schema.Type type = nt.getType();
- if (type == RECORD) {
- if (SchemaResolver.isUnresolvedSchema(nt)) {
- // unresolved schema will get a replacement that we already
encountered,
- // or we will attempt to resolve.
- final String unresolvedSchemaName =
SchemaResolver.getUnresolvedSchemaName(nt);
- Schema resSchema = symbolTable.apply(unresolvedSchemaName);
- if (resSchema == null) {
- throw new AvroTypeException("Unable to resolve " +
unresolvedSchemaName);
- }
- Schema replacement = replace.computeIfAbsent(resSchema, schema -> {
- Schemas.visit(schema, this);
- return replace.get(schema);
- });
- replace.put(nt, replacement);
- } else {
- // create a fieldless clone. Fields will be added in
afterVisitNonTerminal.
- Schema newSchema = Schema.createRecord(nt.getName(), nt.getDoc(),
nt.getNamespace(), nt.isError());
- copyProperties(nt, newSchema);
- replace.put(nt, newSchema);
- }
- }
- return SchemaVisitorAction.CONTINUE;
- }
-
- @Override
- public SchemaVisitorAction afterVisitNonTerminal(final Schema nt) {
- Schema.Type type = nt.getType();
- Schema newSchema;
- switch (type) {
- case RECORD:
- if (!SchemaResolver.isUnresolvedSchema(nt)) {
- newSchema = replace.get(nt);
- // Check if we've already handled the replacement schema with a
- // reentrant call to visit(...) from within the visitor.
- if (!newSchema.hasFields()) {
- List<Schema.Field> fields = nt.getFields();
- List<Schema.Field> newFields = new ArrayList<>(fields.size());
- for (Schema.Field field : fields) {
- newFields.add(new Field(field, replace.get(field.schema())));
- }
- newSchema.setFields(newFields);
- }
- }
- return SchemaVisitorAction.CONTINUE;
- case UNION:
- List<Schema> types = nt.getTypes();
- List<Schema> newTypes = new ArrayList<>(types.size());
- for (Schema sch : types) {
- newTypes.add(replace.get(sch));
- }
- newSchema = Schema.createUnion(newTypes);
- break;
- case ARRAY:
- newSchema = Schema.createArray(replace.get(nt.getElementType()));
- break;
- case MAP:
- newSchema = Schema.createMap(replace.get(nt.getValueType()));
- break;
- default:
- throw new IllegalStateException("Illegal type " + type + ", schema " +
nt);
- }
- copyProperties(nt, newSchema);
- replace.put(nt, newSchema);
- return SchemaVisitorAction.CONTINUE;
- }
-
- @Override
- public Schema get() {
- return replace.get(root);
- }
-
- @Override
- public String toString() {
- return "ResolvingVisitor{symbolTable=" + symbolTable + ",
schemaPropertiesToRemove=" + schemaPropertiesToRemove
- + ", replace=" + replace + '}';
- }
-}
diff --git
a/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaResolver.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaResolver.java
deleted file mode 100644
index 8c9a9c15b..000000000
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaResolver.java
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.avro.idl;
-
-import org.apache.avro.JsonProperties;
-import org.apache.avro.Protocol;
-import org.apache.avro.Schema;
-
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.concurrent.atomic.AtomicInteger;
-import java.util.function.Function;
-import java.util.stream.Collectors;
-
-/**
- * Utility class to resolve schemas that are unavailable at the point they are
- * referenced in the IDL.
- */
-final class SchemaResolver {
-
- private SchemaResolver() {
- }
-
- private static final String UR_SCHEMA_ATTR =
"org.apache.avro.idl.unresolved.name";
-
- private static final String UR_SCHEMA_NAME = "UnresolvedSchema";
-
- private static final String UR_SCHEMA_NS = "org.apache.avro.compiler";
-
- private static final AtomicInteger COUNTER = new AtomicInteger();
-
- /**
- * Create a schema to represent an "unresolved" schema. (used to represent a
- * schema whose definition does not exist, yet).
- *
- * @param name a schema name
- * @return an unresolved schema for the given name
- */
- static Schema unresolvedSchema(final String name) {
- Schema schema = Schema.createRecord(UR_SCHEMA_NAME + '_' +
COUNTER.getAndIncrement(), "unresolved schema",
- UR_SCHEMA_NS, false, Collections.emptyList());
- schema.addProp(UR_SCHEMA_ATTR, name);
- return schema;
- }
-
- /**
- * Is this an unresolved schema.
- *
- * @param schema a schema
- * @return whether the schema is an unresolved schema
- */
- static boolean isUnresolvedSchema(final Schema schema) {
- return (schema.getType() == Schema.Type.RECORD &&
schema.getProp(UR_SCHEMA_ATTR) != null && schema.getName() != null
- && schema.getName().startsWith(UR_SCHEMA_NAME) &&
UR_SCHEMA_NS.equals(schema.getNamespace()));
- }
-
- /**
- * Get the unresolved schema name.
- *
- * @param schema an unresolved schema
- * @return the name of the unresolved schema
- */
- static String getUnresolvedSchemaName(final Schema schema) {
- if (!isUnresolvedSchema(schema)) {
- throw new IllegalArgumentException("Not a unresolved schema: " + schema);
- }
- return schema.getProp(UR_SCHEMA_ATTR);
- }
-
- /**
- * Is this an unresolved schema?
- */
- static boolean isFullyResolvedSchema(final Schema schema) {
- if (isUnresolvedSchema(schema)) {
- return false;
- } else {
- return Schemas.visit(schema, new IsResolvedSchemaVisitor());
- }
- }
-
- /**
- * Clone all provided schemas while resolving all unreferenced schemas.
- *
- * @param idlFile a parsed IDL file
- * @return a copy of idlFile with all schemas resolved
- */
- static IdlFile resolve(final IdlFile idlFile, String...
schemaPropertiesToRemove) {
- if (idlFile.getProtocol() != null) {
- return new IdlFile(resolve(idlFile.getProtocol(),
schemaPropertiesToRemove), idlFile.getWarnings());
- }
-
- ResolvingVisitor visitor = new ResolvingVisitor(null,
idlFile::getNamedSchema, schemaPropertiesToRemove);
- Function<Schema, Schema> resolver = schema -> Schemas.visit(schema,
visitor.withRoot(schema));
-
- List<Schema> namedSchemata =
idlFile.getNamedSchemas().values().stream().map(resolver).collect(Collectors.toList());
- Schema mainSchema =
Optional.ofNullable(idlFile.getMainSchema()).map(resolver).orElse(null);
- return new IdlFile(idlFile.getNamespace(), mainSchema, namedSchemata,
idlFile.getWarnings());
- }
-
- /**
- * Will clone the provided protocol while resolving all unreferenced schemas
- *
- * @param protocol a parsed protocol
- * @return a copy of the protocol with all schemas resolved
- */
- static Protocol resolve(final Protocol protocol, String...
schemaPropertiesToRemove) {
- // Create an empty copy of the protocol
- Protocol result = new Protocol(protocol.getName(), protocol.getDoc(),
protocol.getNamespace());
- protocol.getObjectProps().forEach(((JsonProperties) result)::addProp);
-
- ResolvingVisitor visitor = new ResolvingVisitor(null, protocol::getType,
schemaPropertiesToRemove);
- Function<Schema, Schema> resolver = schema -> Schemas.visit(schema,
visitor.withRoot(schema));
-
- // Resolve all schemata in the protocol.
-
result.setTypes(protocol.getTypes().stream().map(resolver).collect(Collectors.toList()));
- Map<String, Protocol.Message> resultMessages = result.getMessages();
- protocol.getMessages().forEach((name, oldValue) -> {
- Protocol.Message newValue;
- if (oldValue.isOneWay()) {
- newValue = result.createMessage(oldValue.getName(), oldValue.getDoc(),
oldValue,
- resolver.apply(oldValue.getRequest()));
- } else {
- Schema request = resolver.apply(oldValue.getRequest());
- Schema response = resolver.apply(oldValue.getResponse());
- Schema errors = resolver.apply(oldValue.getErrors());
- newValue = result.createMessage(oldValue.getName(), oldValue.getDoc(),
oldValue, request, response, errors);
- }
- resultMessages.put(name, newValue);
- });
- return result;
- }
-}
diff --git
a/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaVisitorAction.java
b/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaVisitorAction.java
deleted file mode 100644
index 6aed09b3d..000000000
--- a/lang/java/idl/src/main/java/org/apache/avro/idl/SchemaVisitorAction.java
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.avro.idl;
-
-public enum SchemaVisitorAction {
-
- /**
- * continue visit.
- */
- CONTINUE,
- /**
- * terminate visit.
- */
- TERMINATE,
- /**
- * when returned from pre non terminal visit method the children of the non
- * terminal are skipped. afterVisitNonTerminal for the current schema will
not
- * be invoked.
- */
- SKIP_SUBTREE,
- /**
- * Skip visiting the siblings of this schema.
- */
- SKIP_SIBLINGS
-}
diff --git
a/lang/java/idl/src/main/resources/META-INF/services/org.apache.avro.FormattedSchemaParser
b/lang/java/idl/src/main/resources/META-INF/services/org.apache.avro.FormattedSchemaParser
new file mode 100644
index 000000000..acb4986e4
--- /dev/null
+++
b/lang/java/idl/src/main/resources/META-INF/services/org.apache.avro.FormattedSchemaParser
@@ -0,0 +1,18 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+org.apache.avro.idl.IdlSchemaParser
diff --git a/lang/java/idl/src/test/java/org/apache/avro/idl/IdlReaderTest.java
b/lang/java/idl/src/test/java/org/apache/avro/idl/IdlReaderTest.java
index 8e9f187f4..9b503bcb2 100644
--- a/lang/java/idl/src/test/java/org/apache/avro/idl/IdlReaderTest.java
+++ b/lang/java/idl/src/test/java/org/apache/avro/idl/IdlReaderTest.java
@@ -97,7 +97,6 @@ public class IdlReaderTest {
assertEquals(1, idlFile.getNamedSchemas().size());
idlFile.getNamedSchemas().keySet().forEach(System.out::println);
assertNotNull(idlFile.getNamedSchema("communication.Message"));
- assertNotNull(idlFile.getNamedSchema("Message"));
assertNotNull(idlFile.getProtocol());
assertNull(idlFile.getMainSchema());
@@ -111,12 +110,11 @@ public class IdlReaderTest {
assertEquals(1, idlFile.getNamedSchemas().size());
idlFile.getNamedSchemas().keySet().forEach(System.out::println);
assertNotNull(idlFile.getNamedSchema("communication.Message"));
- assertNotNull(idlFile.getNamedSchema("Message"));
assertNull(idlFile.getProtocol());
Schema mainSchema = idlFile.getMainSchema();
assertEquals(Schema.Type.ARRAY, mainSchema.getType());
- assertEquals(idlFile.getNamedSchema("Message"),
mainSchema.getElementType());
+ assertEquals(idlFile.getNamedSchema("communication.Message"),
mainSchema.getElementType());
}
@Test
diff --git a/lang/java/idl/src/test/java/org/apache/avro/idl/TestCycle.java
b/lang/java/idl/src/test/java/org/apache/avro/idl/TestCycle.java
index 427de0957..a3c94ff02 100644
--- a/lang/java/idl/src/test/java/org/apache/avro/idl/TestCycle.java
+++ b/lang/java/idl/src/test/java/org/apache/avro/idl/TestCycle.java
@@ -44,26 +44,27 @@ public class TestCycle {
@Test
public void testCycleGeneration() throws IOException, URISyntaxException {
final ClassLoader cl = Thread.currentThread().getContextClassLoader();
- IdlFile idlFile = new
IdlReader().parse(requireNonNull(cl.getResource("input/cycle.avdl")).toURI());
+ IdlReader parser = new IdlReader();
+ IdlFile idlFile =
parser.resolve(parser.parse(requireNonNull(cl.getResource("input/cycle.avdl")).toURI()));
String json = idlFile.outputString();
LOG.info(json);
- GenericRecordBuilder rb2 = new
GenericRecordBuilder(idlFile.getNamedSchema("SampleNode"));
+ GenericRecordBuilder rb2 = new
GenericRecordBuilder(idlFile.getNamedSchema("org.apache.avro.gen.SampleNode"));
rb2.set("count", 10);
rb2.set("subNodes", Collections.EMPTY_LIST);
GenericData.Record node = rb2.build();
- GenericRecordBuilder mb = new
GenericRecordBuilder(idlFile.getNamedSchema("Method"));
+ GenericRecordBuilder mb = new
GenericRecordBuilder(idlFile.getNamedSchema("org.apache.avro.gen.Method"));
mb.set("declaringClass", "Test");
mb.set("methodName", "test");
GenericData.Record method = mb.build();
- GenericRecordBuilder spb = new
GenericRecordBuilder(idlFile.getNamedSchema("SamplePair"));
+ GenericRecordBuilder spb = new
GenericRecordBuilder(idlFile.getNamedSchema("org.apache.avro.gen.SamplePair"));
spb.set("method", method);
spb.set("node", node);
GenericData.Record sp = spb.build();
- GenericRecordBuilder rb = new
GenericRecordBuilder(idlFile.getNamedSchema("SampleNode"));
+ GenericRecordBuilder rb = new
GenericRecordBuilder(idlFile.getNamedSchema("org.apache.avro.gen.SampleNode"));
rb.set("count", 10);
rb.set("subNodes", Collections.singletonList(sp));
GenericData.Record record = rb.build();
diff --git a/lang/java/ipc/src/test/java/org/apache/avro/TestSchema.java
b/lang/java/ipc/src/test/java/org/apache/avro/TestSchema.java
index d85b28eff..ab35a6d83 100644
--- a/lang/java/ipc/src/test/java/org/apache/avro/TestSchema.java
+++ b/lang/java/ipc/src/test/java/org/apache/avro/TestSchema.java
@@ -205,9 +205,9 @@ public class TestSchema {
@Test
void invalidNameTolerance() {
- new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).parse("{\"type\":\"record\",\"name\":\"1X\",\"fields\":[]}");
- new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).parse("{\"type\":\"record\",\"name\":\"X-\",\"fields\":[]}");
- new
Schema.Parser(Schema.NameValidator.NO_VALIDATION).parse("{\"type\":\"record\",\"name\":\"X$\",\"fields\":[]}");
+ new
Schema.Parser(NameValidator.NO_VALIDATION).parse("{\"type\":\"record\",\"name\":\"1X\",\"fields\":[]}");
+ new
Schema.Parser(NameValidator.NO_VALIDATION).parse("{\"type\":\"record\",\"name\":\"X-\",\"fields\":[]}");
+ new
Schema.Parser(NameValidator.NO_VALIDATION).parse("{\"type\":\"record\",\"name\":\"X$\",\"fields\":[]}");
}
@Test
diff --git
a/lang/java/maven-plugin/src/main/java/org/apache/avro/mojo/IDLMojo.java
b/lang/java/maven-plugin/src/main/java/org/apache/avro/mojo/IDLMojo.java
index 15f6a6c0c..d6db625d1 100644
--- a/lang/java/maven-plugin/src/main/java/org/apache/avro/mojo/IDLMojo.java
+++ b/lang/java/maven-plugin/src/main/java/org/apache/avro/mojo/IDLMojo.java
@@ -18,21 +18,20 @@
package org.apache.avro.mojo;
-import java.io.File;
-import java.io.IOException;
-import java.net.URL;
-import java.net.URLClassLoader;
-import java.util.ArrayList;
-import java.util.List;
-
import org.apache.avro.Protocol;
import org.apache.avro.compiler.specific.SpecificCompiler;
import org.apache.avro.generic.GenericData;
-
import org.apache.avro.idl.IdlFile;
import org.apache.avro.idl.IdlReader;
import org.apache.maven.artifact.DependencyResolutionRequiredException;
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.List;
+
/**
* Generate Java classes and interfaces from AvroIDL files (.avdl)
*
@@ -89,6 +88,7 @@ public class IDLMojo extends AbstractAvroMojo {
for (String warning : idlFile.getWarnings()) {
getLog().warn(warning);
}
+ idlFile = parser.resolve(idlFile);
final SpecificCompiler compiler;
final Protocol protocol = idlFile.getProtocol();
if (protocol != null) {
diff --git a/lang/java/pom.xml b/lang/java/pom.xml
index f51f4df93..c439548f8 100644
--- a/lang/java/pom.xml
+++ b/lang/java/pom.xml
@@ -314,6 +314,8 @@
<searchRegex>import\s+[^\*\s]+\*;(\r\n|\r|\n)</searchRegex>
<replacement>$1</replacement>
</replaceRegex>
+ <!-- Allow spotless:off/spotless:on comment pairs to keep
ASCII-formatted tables intact -->
+ <toggleOffOn/>
</java>
</configuration>
<executions>
diff --git a/lang/java/tools/src/main/java/org/apache/avro/tool/IdlTool.java
b/lang/java/tools/src/main/java/org/apache/avro/tool/IdlTool.java
index d20226b8e..6ef827146 100644
--- a/lang/java/tools/src/main/java/org/apache/avro/tool/IdlTool.java
+++ b/lang/java/tools/src/main/java/org/apache/avro/tool/IdlTool.java
@@ -25,9 +25,9 @@ import org.apache.avro.idl.IdlFile;
import org.apache.avro.idl.IdlReader;
import java.io.File;
-import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.PrintStream;
+import java.nio.file.Files;
import java.util.List;
/**
@@ -56,8 +56,9 @@ public class IdlTool implements Tool {
File outputFile = "-".equals(outputName) ? null : new File(outputName);
Schema m = null;
- Protocol p = null;
+ Protocol p;
if (useJavaCC) {
+ // noinspection deprecation
try (Idl parser = new Idl(inputFile)) {
p = parser.CompilationUnit();
for (String warning : parser.getWarningsAfterParsing()) {
@@ -70,13 +71,14 @@ public class IdlTool implements Tool {
for (String warning : idlFile.getWarnings()) {
err.println("Warning: " + warning);
}
+ idlFile = parser.resolve(idlFile);
p = idlFile.getProtocol();
m = idlFile.getMainSchema();
}
PrintStream parseOut = out;
if (outputFile != null) {
- parseOut = new PrintStream(new FileOutputStream(outputFile));
+ parseOut = new PrintStream(Files.newOutputStream(outputFile.toPath()));
}
if (m == null && p == null) {
