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new f32c836 [FLINK-12253][table-common] Add a FLOAT type
f32c836 is described below
commit f32c836bc9df5c6f3e93e7487dc10c84b9c7d273
Author: Timo Walther <[email protected]>
AuthorDate: Thu May 2 09:12:16 2019 +0200
[FLINK-12253][table-common] Add a FLOAT type
---
.../flink/table/types/logical/FloatType.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/FloatType.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/FloatType.java
new file mode 100644
index 0000000..25850b4
--- /dev/null
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/FloatType.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 4-byte single precision floating point number.
+ *
+ * <p>The serialized string representation is {@code FLOAT}.
+ */
+@PublicEvolving
+public final class FloatType extends LogicalType {
+
+ private static final String FORMAT = "FLOAT";
+
+ private static final Set<String> NULL_OUTPUT_CONVERSION = conversionSet(
+ Float.class.getName());
+
+ private static final Set<String> NOT_NULL_INPUT_OUTPUT_CONVERSION =
conversionSet(
+ Float.class.getName(),
+ float.class.getName());
+
+ private static final Class<?> DEFAULT_CONVERSION = Float.class;
+
+ public FloatType(boolean isNullable) {
+ super(isNullable, LogicalTypeRoot.FLOAT);
+ }
+
+ public FloatType() {
+ this(true);
+ }
+
+ @Override
+ public LogicalType copy(boolean isNullable) {
+ return new FloatType(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 c1e3b59..fbfc450 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
@@ -49,5 +49,7 @@ public interface LogicalTypeVisitor<R> {
R visit(BigIntType bigIntType);
+ R visit(FloatType floatType);
+
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 ffaeca9..979d76b 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
@@ -23,6 +23,7 @@ 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.DecimalType;
+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;
@@ -177,6 +178,19 @@ public class LogicalTypesTest {
);
}
+ @Test
+ public void testFloatType() {
+ testAll(
+ new FloatType(),
+ "FLOAT",
+ "FLOAT",
+ new Class[]{Float.class, float.class},
+ new Class[]{Float.class},
+ new LogicalType[]{},
+ new FloatType(false)
+ );
+ }
+
//
--------------------------------------------------------------------------------------------
private static void testAll(
