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new 32d9c47 [FLINK-12253][table-common] Add a TIME type
32d9c47 is described below
commit 32d9c470f27182d931835fdf5ab987534bb7ae83
Author: Timo Walther <[email protected]>
AuthorDate: Thu May 2 09:38:18 2019 +0200
[FLINK-12253][table-common] Add a TIME type
---
.../table/types/logical/LogicalTypeVisitor.java | 2 +
.../apache/flink/table/types/logical/TimeType.java | 145 +++++++++++++++++++++
.../apache/flink/table/types/LogicalTypesTest.java | 14 ++
3 files changed, 161 insertions(+)
diff --git
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/LogicalTypeVisitor.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/LogicalTypeVisitor.java
index ceefad0..07ae9d0 100644
---
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/LogicalTypeVisitor.java
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/LogicalTypeVisitor.java
@@ -55,5 +55,7 @@ public interface LogicalTypeVisitor<R> {
R visit(DateType dateType);
+ R visit(TimeType timeType);
+
R visit(LogicalType other);
}
diff --git
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/TimeType.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/TimeType.java
new file mode 100644
index 0000000..f1e685c
--- /dev/null
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/TimeType.java
@@ -0,0 +1,145 @@
+/*
+ * 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
+ *
+ * http://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.flink.table.types.logical;
+
+import org.apache.flink.annotation.PublicEvolving;
+import org.apache.flink.table.api.ValidationException;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * Logical type of a time WITHOUT time zone consisting of {@code
hour:minute:second[.fractional]} with
+ * up to nanosecond precision and values ranging from {@code
00:00:00.000000000} to
+ * {@code 23:59:59.999999999}. Compared to the SQL standard, leap seconds
(23:59:60 and 23:59:61) are
+ * not supported as the semantics are closer to {@link java.time.LocalTime}. A
time WITH time zone is
+ * is not provided.
+ *
+ * <p>The serialized string representation is {@code TIME(p)} where {@code p}
is the number of digits
+ * of fractional seconds (=precision). {@code p} must have a value between 0
and 9 (both inclusive).
+ * If no precision is specified, {@code p} is equal to 0.
+ *
+ * <p>A conversion from and to {@code int} describes the number of
milliseconds of the day. A
+ * conversion from and to {@code long} describes the number of nanoseconds of
the day.
+ */
+@PublicEvolving
+public final class TimeType extends LogicalType {
+
+ private static final int MIN_PRECISION = 0;
+
+ private static final int MAX_PRECISION = 9;
+
+ private static final int DEFAULT_PRECISION = 0;
+
+ private static final String FORMAT = "TIME(%d)";
+
+ private static final Set<String> NULL_OUTPUT_CONVERSION = conversionSet(
+ java.sql.Time.class.getName(),
+ java.time.LocalTime.class.getName());
+
+ private static final Set<String> NOT_NULL_INPUT_OUTPUT_CONVERSION =
conversionSet(
+ java.sql.Time.class.getName(),
+ java.time.LocalTime.class.getName(),
+ int.class.getName(),
+ long.class.getName());
+
+ private static final Class<?> DEFAULT_CONVERSION =
java.time.LocalTime.class;
+
+ private final int precision;
+
+ public TimeType(boolean isNullable, int precision) {
+ super(isNullable, LogicalTypeRoot.TIME_WITHOUT_TIME_ZONE);
+ if (precision < MIN_PRECISION || precision > MAX_PRECISION) {
+ throw new ValidationException(
+ String.format(
+ "Time precision must be between %d and
%d (both inclusive).",
+ MIN_PRECISION,
+ MAX_PRECISION));
+ }
+ this.precision = precision;
+ }
+
+ public TimeType(int precision) {
+ this(true, precision);
+ }
+
+ public TimeType() {
+ this(DEFAULT_PRECISION);
+ }
+
+ @Override
+ public LogicalType copy(boolean isNullable) {
+ return new TimeType(isNullable, precision);
+ }
+
+ @Override
+ public String asSerializableString() {
+ return withNullability(FORMAT, precision);
+ }
+
+ @Override
+ public boolean supportsInputConversion(Class<?> clazz) {
+ return
NOT_NULL_INPUT_OUTPUT_CONVERSION.contains(clazz.getName());
+ }
+
+ @Override
+ public boolean supportsOutputConversion(Class<?> clazz) {
+ if (isNullable()) {
+ return NULL_OUTPUT_CONVERSION.contains(clazz.getName());
+ }
+ return
NOT_NULL_INPUT_OUTPUT_CONVERSION.contains(clazz.getName());
+ }
+
+ @Override
+ public Class<?> getDefaultConversion() {
+ return DEFAULT_CONVERSION;
+ }
+
+ @Override
+ public List<LogicalType> getChildren() {
+ return Collections.emptyList();
+ }
+
+ @Override
+ public <R> R accept(LogicalTypeVisitor<R> visitor) {
+ return visitor.visit(this);
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ if (!super.equals(o)) {
+ return false;
+ }
+ TimeType timeType = (TimeType) o;
+ return precision == timeType.precision;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(super.hashCode(), precision);
+ }
+}
diff --git
a/flink-table/flink-table-common/src/test/java/org/apache/flink/table/types/LogicalTypesTest.java
b/flink-table/flink-table-common/src/test/java/org/apache/flink/table/types/LogicalTypesTest.java
index ac6dab0..ef856e0 100644
---
a/flink-table/flink-table-common/src/test/java/org/apache/flink/table/types/LogicalTypesTest.java
+++
b/flink-table/flink-table-common/src/test/java/org/apache/flink/table/types/LogicalTypesTest.java
@@ -29,6 +29,7 @@ import org.apache.flink.table.types.logical.FloatType;
import org.apache.flink.table.types.logical.IntType;
import org.apache.flink.table.types.logical.LogicalType;
import org.apache.flink.table.types.logical.SmallIntType;
+import org.apache.flink.table.types.logical.TimeType;
import org.apache.flink.table.types.logical.TinyIntType;
import org.apache.flink.table.types.logical.VarBinaryType;
import org.apache.flink.table.types.logical.VarCharType;
@@ -219,6 +220,19 @@ public class LogicalTypesTest {
);
}
+ @Test
+ public void testTimeType() {
+ testAll(
+ new TimeType(9),
+ "TIME(9)",
+ "TIME(9)",
+ new Class[]{java.sql.Time.class,
java.time.LocalTime.class, long.class},
+ new Class[]{java.time.LocalTime.class},
+ new LogicalType[]{},
+ new TimeType()
+ );
+ }
+
//
--------------------------------------------------------------------------------------------
private static void testAll(
