hadoop JavaSerializationComparator 源码
haddop JavaSerializationComparator 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/serializer/JavaSerializationComparator.java
/**
* 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.hadoop.io.serializer;
import java.io.IOException;
import java.io.Serializable;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.io.RawComparator;
/**
* <p>
* A {@link RawComparator} that uses a {@link JavaSerialization}
* {@link Deserializer} to deserialize objects that are then compared via
* their {@link Comparable} interfaces.
* </p>
* @param <T> generic type.
* @see JavaSerialization
*/
@InterfaceAudience.Public
@InterfaceStability.Unstable
public class JavaSerializationComparator<T extends Serializable&Comparable<T>>
extends DeserializerComparator<T> {
@InterfaceAudience.Private
public JavaSerializationComparator() throws IOException {
super(new JavaSerialization.JavaSerializationDeserializer<T>());
}
@Override
@InterfaceAudience.Private
public int compare(T o1, T o2) {
return o1.compareTo(o2);
}
}
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