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new 22de460 [FLINK-12253][table-common] Add a DATE type
22de460 is described below
commit 22de460167babfbe99eeb73c943995cb8116df2f
Author: Timo Walther <[email protected]>
AuthorDate: Thu May 2 09:24:12 2019 +0200
[FLINK-12253][table-common] Add a DATE type
---
.../apache/flink/table/types/logical/DateType.java | 96 ++++++++++++++++++++++
.../table/types/logical/LogicalTypeVisitor.java | 2 +
.../apache/flink/table/types/LogicalTypesTest.java | 14 ++++
3 files changed, 112 insertions(+)
diff --git
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/DateType.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/DateType.java
new file mode 100644
index 0000000..6c81a71
--- /dev/null
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/DateType.java
@@ -0,0 +1,96 @@
+/*
+ * 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 java.util.Collections;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Logical type of a date consisting of {@code year-month-day} with values
ranging from {@code 0000-01-01}
+ * to {@code 9999-12-31}. Compared to the SQL standard, the range starts at
year {@code 0000}.
+ *
+ * <p>The serialized string representation is {@code DATE}.
+ *
+ * <p>A conversion from and to {@code int} describes the number of days since
epoch.
+ */
+@PublicEvolving
+public final class DateType extends LogicalType {
+
+ private static final String FORMAT = "DATE";
+
+ private static final Set<String> NULL_OUTPUT_CONVERSION = conversionSet(
+ java.sql.Date.class.getName(),
+ java.time.LocalDate.class.getName());
+
+ private static final Set<String> NOT_NULL_INPUT_OUTPUT_CONVERSION =
conversionSet(
+ java.sql.Date.class.getName(),
+ java.time.LocalDate.class.getName(),
+ int.class.getName());
+
+ private static final Class<?> DEFAULT_CONVERSION =
java.time.LocalDate.class;
+
+ public DateType(boolean isNullable) {
+ super(isNullable, LogicalTypeRoot.DATE);
+ }
+
+ public DateType() {
+ this(true);
+ }
+
+ @Override
+ public LogicalType copy(boolean isNullable) {
+ return new DateType(isNullable);
+ }
+
+ @Override
+ public String asSerializableString() {
+ return withNullability(FORMAT);
+ }
+
+ @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);
+ }
+}
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 6567ced..ceefad0 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
@@ -53,5 +53,7 @@ public interface LogicalTypeVisitor<R> {
R visit(DoubleType doubleType);
+ R visit(DateType dateType);
+
R visit(LogicalType other);
}
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 9ba540a..ac6dab0 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
@@ -22,6 +22,7 @@ import org.apache.flink.table.types.logical.BigIntType;
import org.apache.flink.table.types.logical.BinaryType;
import org.apache.flink.table.types.logical.BooleanType;
import org.apache.flink.table.types.logical.CharType;
+import org.apache.flink.table.types.logical.DateType;
import org.apache.flink.table.types.logical.DecimalType;
import org.apache.flink.table.types.logical.DoubleType;
import org.apache.flink.table.types.logical.FloatType;
@@ -205,6 +206,19 @@ public class LogicalTypesTest {
);
}
+ @Test
+ public void testDateType() {
+ testAll(
+ new DateType(),
+ "DATE",
+ "DATE",
+ new Class[]{java.sql.Date.class,
java.time.LocalDate.class, int.class},
+ new Class[]{java.time.LocalDate.class},
+ new LogicalType[]{},
+ new DateType(false)
+ );
+ }
+
//
--------------------------------------------------------------------------------------------
private static void testAll(
