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new 9db5ae0 [FLINK-12253][table-common] Add a BOOLEAN type
9db5ae0 is described below
commit 9db5ae029dc2359fed7321698aebdd24a1f449c4
Author: Timo Walther <twal...@apache.org>
AuthorDate: Tue Apr 30 16:38:22 2019 +0200
[FLINK-12253][table-common] Add a BOOLEAN type
---
.../flink/table/types/logical/BooleanType.java | 91 ++++++++++++++++++++++
.../table/types/logical/LogicalTypeVisitor.java | 2 +
.../apache/flink/table/types/LogicalTypesTest.java | 14 ++++
3 files changed, 107 insertions(+)
diff --git
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/BooleanType.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/BooleanType.java
new file mode 100644
index 0000000..a9ed8f0
--- /dev/null
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/BooleanType.java
@@ -0,0 +1,91 @@
+/*
+ * 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 boolean with a (possibly) three-valued logic of {@code
TRUE, FALSE, UNKNOWN}.
+ *
+ * <p>The serialized string representation is {@code BOOLEAN}.
+ */
+@PublicEvolving
+public final class BooleanType extends LogicalType {
+
+ private static final String FORMAT = "BOOLEAN";
+
+ private static final Set<String> NULL_OUTPUT_CONVERSION = conversionSet(
+ Boolean.class.getName());
+
+ private static final Set<String> NOT_NULL_INPUT_OUTPUT_CONVERSION =
conversionSet(
+ Boolean.class.getName(),
+ boolean.class.getName());
+
+ private static final Class<?> DEFAULT_CONVERSION = Boolean.class;
+
+ public BooleanType(boolean isNullable) {
+ super(isNullable, LogicalTypeRoot.BOOLEAN);
+ }
+
+ public BooleanType() {
+ this(true);
+ }
+
+ @Override
+ public LogicalType copy(boolean isNullable) {
+ return new BooleanType(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 7f78149..bbbc064 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
@@ -33,5 +33,7 @@ public interface LogicalTypeVisitor<R> {
R visit(VarCharType varCharType);
+ R visit(BooleanType booleanType);
+
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 f2a1e48..a8c903c 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
@@ -18,6 +18,7 @@
package org.apache.flink.table.types;
+import org.apache.flink.table.types.logical.BooleanType;
import org.apache.flink.table.types.logical.CharType;
import org.apache.flink.table.types.logical.LogicalType;
import org.apache.flink.table.types.logical.VarCharType;
@@ -64,6 +65,19 @@ public class LogicalTypesTest {
);
}
+ @Test
+ public void testBooleanType() {
+ testAll(
+ new BooleanType(),
+ "BOOLEAN",
+ "BOOLEAN",
+ new Class[]{Boolean.class, boolean.class},
+ new Class[]{Boolean.class},
+ new LogicalType[]{},
+ new BooleanType(false)
+ );
+ }
+
//
--------------------------------------------------------------------------------------------
private static void testAll(
