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ScalaOptionSerializerConfigSnapshot.java
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ScalaOptionSerializerConfigSnapshot.java
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/*
* 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.api.scala.typeutils;
import org.apache.flink.api.common.typeutils.CompositeTypeSerializerConfigSnapshot;
import org.apache.flink.api.common.typeutils.CompositeTypeSerializerUtil;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot;
import org.apache.flink.api.common.typeutils.TypeSerializerSchemaCompatibility;
import scala.Option;
/**
* A {@link TypeSerializerConfigSnapshot} for the Scala {@link OptionSerializer}.
*
* <p>This configuration snapshot class is implemented in Java because Scala does not
* allow calling different base class constructors from subclasses, while we need that
* for the default empty constructor.
*/
@Deprecated
public final class ScalaOptionSerializerConfigSnapshot<E> extends CompositeTypeSerializerConfigSnapshot<Option<E>> {
private static final int VERSION = 1;
/** This empty nullary constructor is required for deserializing the configuration. */
public ScalaOptionSerializerConfigSnapshot() {}
public ScalaOptionSerializerConfigSnapshot(TypeSerializer<E> elementSerializer) {
super(elementSerializer);
}
@Override
public int getVersion() {
return VERSION;
}
@Override
public TypeSerializerSchemaCompatibility<Option<E>> resolveSchemaCompatibility(TypeSerializer<Option<E>> newSerializer) {
return CompositeTypeSerializerUtil.delegateCompatibilityCheckToNewSnapshot(
newSerializer,
new ScalaOptionSerializerSnapshot<>(),
getSingleNestedSerializerAndConfig().f1);
}
}