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new ff249bc [FLINK-12979][formats] Allow empty line delimiter for
CsvRowSerializationSchema
ff249bc is described below
commit ff249bce3dd4ef61518fb1e647e31e8f85640b61
Author: cyq89051127 <cha...@asiainfo.com>
AuthorDate: Sun Aug 25 15:01:43 2019 +0800
[FLINK-12979][formats] Allow empty line delimiter for
CsvRowSerializationSchema
This closes #9529.
---
docs/dev/table/connect.md | 7 ++++---
docs/dev/table/connect.zh.md | 11 ++++++-----
.../apache/flink/formats/csv/CsvRowSerializationSchema.java | 4 ++--
.../src/main/java/org/apache/flink/table/descriptors/Csv.java | 2 +-
.../java/org/apache/flink/table/descriptors/CsvValidator.java | 2 +-
.../flink/formats/csv/CsvRowDeSerializationSchemaTest.java | 11 +++++++++++
6 files changed, 25 insertions(+), 12 deletions(-)
diff --git a/docs/dev/table/connect.md b/docs/dev/table/connect.md
index 975a0d0..5206620 100644
--- a/docs/dev/table/connect.md
+++ b/docs/dev/table/connect.md
@@ -1355,7 +1355,7 @@ The CSV format can be used as follows:
.fieldDelimiter(';') // optional: field delimiter character (','
by default)
.lineDelimiter("\r\n") // optional: line delimiter ("\n" by default;
- // otherwise "\r" or "\r\n" are allowed)
+ // otherwise "\r", "\r\n", or "" are
allowed)
.quoteCharacter('\'') // optional: quote character for enclosing
field values ('"' by default)
.allowComments() // optional: ignores comment lines that start
with '#' (disabled by default);
// if enabled, make sure to also ignore
parse errors to allow empty rows
@@ -1383,7 +1383,7 @@ The CSV format can be used as follows:
.field_delimiter(';') # optional: field delimiter character (','
by default)
.line_delimiter("\r\n") # optional: line delimiter ("\n" by default;
- # otherwise "\r" or "\r\n" are allowed)
+ # otherwise "\r", "\r\n", or "" are
allowed)
.quote_character('\'') # optional: quote character for enclosing
field values ('"' by default)
.allow_comments() # optional: ignores comment lines that
start with '#' (disabled by default);
# if enabled, make sure to also ignore
parse errors to allow empty rows
@@ -1410,7 +1410,8 @@ format:
derive-schema: true
field-delimiter: ";" # optional: field delimiter character (',' by
default)
- line-delimiter: "\r\n" # optional: line delimiter ("\n" by default;
otherwise "\r" or "\r\n" are allowed)
+ line-delimiter: "\r\n" # optional: line delimiter ("\n" by default;
+ # otherwise "\r", "\r\n", or "" are allowed)
quote-character: "'" # optional: quote character for enclosing field
values ('"' by default)
allow-comments: true # optional: ignores comment lines that start
with "#" (disabled by default);
# if enabled, make sure to also ignore parse
errors to allow empty rows
diff --git a/docs/dev/table/connect.zh.md b/docs/dev/table/connect.zh.md
index 6deb6af..9040cf1 100644
--- a/docs/dev/table/connect.zh.md
+++ b/docs/dev/table/connect.zh.md
@@ -1114,7 +1114,7 @@ The CSV format can be used as follows:
.fieldDelimiter(';') // optional: field delimiter character (','
by default)
.lineDelimiter("\r\n") // optional: line delimiter ("\n" by default;
- // otherwise "\r" or "\r\n" are allowed)
+ // otherwise "\r", "\r\n", or "" are
allowed)
.quoteCharacter('\'') // optional: quote character for enclosing
field values ('"' by default)
.allowComments() // optional: ignores comment lines that start
with '#' (disabled by default);
// if enabled, make sure to also ignore
parse errors to allow empty rows
@@ -1142,9 +1142,9 @@ The CSV format can be used as follows:
.field_delimiter(';') # optional: field delimiter character (','
by default)
.line_delimiter("\r\n") # optional: line delimiter ("\n" by default;
- # otherwise "\r" or "\r\n" are allowed)
- .quote_character('\'') # optional: quote character for enclosing
field values ('"' by default)
- .allow_comments() # optional: ignores comment lines that
start with '#' (disabled by default);
+ # otherwise "\r", "\r\n", or "" are
allowed)
+ .quote_character("'") # optional: quote character for enclosing
field values ('"' by default)
+ .allow_comments() # optional: ignores comment lines that
start with "#" (disabled by default);
# if enabled, make sure to also ignore
parse errors to allow empty rows
.ignore_parse_errors() # optional: skip fields and rows with parse
errors instead of failing;
# fields are set to null in case of errors
@@ -1169,7 +1169,8 @@ format:
derive-schema: true
field-delimiter: ";" # optional: field delimiter character (',' by
default)
- line-delimiter: "\r\n" # optional: line delimiter ("\n" by default;
otherwise "\r" or "\r\n" are allowed)
+ line-delimiter: "\r\n" # optional: line delimiter ("\n" by default;
+ # otherwise "\r", "\r\n", or "" are allowed)
quote-character: "'" # optional: quote character for enclosing field
values ('"' by default)
allow-comments: true # optional: ignores comment lines that start
with "#" (disabled by default);
# if enabled, make sure to also ignore parse
errors to allow empty rows
diff --git
a/flink-formats/flink-csv/src/main/java/org/apache/flink/formats/csv/CsvRowSerializationSchema.java
b/flink-formats/flink-csv/src/main/java/org/apache/flink/formats/csv/CsvRowSerializationSchema.java
index a65554f..b3c2de4 100644
---
a/flink-formats/flink-csv/src/main/java/org/apache/flink/formats/csv/CsvRowSerializationSchema.java
+++
b/flink-formats/flink-csv/src/main/java/org/apache/flink/formats/csv/CsvRowSerializationSchema.java
@@ -116,9 +116,9 @@ public final class CsvRowSerializationSchema implements
SerializationSchema<Row>
public Builder setLineDelimiter(String delimiter) {
Preconditions.checkNotNull(delimiter, "Delimiter must
not be null.");
- if (!delimiter.equals("\n") && !delimiter.equals("\r")
&& !delimiter.equals("\r\n")) {
+ if (!delimiter.equals("\n") && !delimiter.equals("\r")
&& !delimiter.equals("\r\n") && !delimiter.equals("")) {
throw new IllegalArgumentException(
- "Unsupported new line delimiter. Only
\\n, \\r, or \\r\\n are supported.");
+ "Unsupported new line delimiter. Only
\\n, \\r, \\r\\n, or empty string are supported.");
}
this.csvSchema =
this.csvSchema.rebuild().setLineSeparator(delimiter).build();
return this;
diff --git
a/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/Csv.java
b/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/Csv.java
index c467f1f..5fb3205 100644
---
a/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/Csv.java
+++
b/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/Csv.java
@@ -75,7 +75,7 @@ public class Csv extends FormatDescriptor {
}
/**
- * Sets the line delimiter ("\n" by default; otherwise "\r" or "\r\n"
are allowed).
+ * Sets the line delimiter ("\n" by default; otherwise "\r", "\r\n", or
"" are allowed).
*
* @param delimiter the line delimiter
*/
diff --git
a/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/CsvValidator.java
b/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/CsvValidator.java
index bc53971..2f7ebab 100644
---
a/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/CsvValidator.java
+++
b/flink-formats/flink-csv/src/main/java/org/apache/flink/table/descriptors/CsvValidator.java
@@ -44,7 +44,7 @@ public class CsvValidator extends FormatDescriptorValidator {
public void validate(DescriptorProperties properties) {
super.validate(properties);
properties.validateString(FORMAT_FIELD_DELIMITER, true, 1, 1);
- properties.validateEnumValues(FORMAT_LINE_DELIMITER, true,
Arrays.asList("\r", "\n", "\r\n"));
+ properties.validateEnumValues(FORMAT_LINE_DELIMITER, true,
Arrays.asList("\r", "\n", "\r\n", ""));
properties.validateString(FORMAT_QUOTE_CHARACTER, true, 1, 1);
properties.validateBoolean(FORMAT_ALLOW_COMMENTS, true);
properties.validateBoolean(FORMAT_IGNORE_PARSE_ERRORS, true);
diff --git
a/flink-formats/flink-csv/src/test/java/org/apache/flink/formats/csv/CsvRowDeSerializationSchemaTest.java
b/flink-formats/flink-csv/src/test/java/org/apache/flink/formats/csv/CsvRowDeSerializationSchemaTest.java
index ece2e45..02b3e27 100644
---
a/flink-formats/flink-csv/src/test/java/org/apache/flink/formats/csv/CsvRowDeSerializationSchemaTest.java
+++
b/flink-formats/flink-csv/src/test/java/org/apache/flink/formats/csv/CsvRowDeSerializationSchemaTest.java
@@ -168,6 +168,17 @@ public class CsvRowDeSerializationSchemaTest {
serialize(serSchemaBuilder, Row.of("Test", 12,
"Hello")));
}
+ @Test
+ public void testEmptyLineDelimiter() throws Exception {
+ final TypeInformation<Row> rowInfo = Types.ROW(Types.STRING,
Types.INT, Types.STRING);
+ final CsvRowSerializationSchema.Builder serSchemaBuilder = new
CsvRowSerializationSchema.Builder(rowInfo)
+ .setLineDelimiter("");
+
+ assertArrayEquals(
+ "Test,12,Hello".getBytes(),
+ serialize(serSchemaBuilder, Row.of("Test", 12,
"Hello")));
+ }
+
@Test(expected = IllegalArgumentException.class)
public void testInvalidNesting() throws Exception {
testNullableField(Types.ROW(Types.ROW(Types.STRING)), "FAIL",
Row.of(Row.of("FAIL")));
