hadoop Comparators 源码
haddop Comparators 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/utils/Comparators.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.yarn.service.utils;
import java.io.Serializable;
import java.util.Comparator;
/**
* Some general comparators
*/
public class Comparators {
public static class LongComparator implements Comparator<Long>, Serializable {
@Override
public int compare(Long o1, Long o2) {
return o1.compareTo(o2);
}
}
public static class InvertedLongComparator
implements Comparator<Long>, Serializable {
@Override
public int compare(Long o1, Long o2) {
return o2.compareTo(o1);
}
}
/**
* Little template class to reverse any comparitor
* @param <CompareType> the type that is being compared
*/
public static class ComparatorReverser<CompareType> implements Comparator<CompareType>,
Serializable {
final Comparator<CompareType> instance;
public ComparatorReverser(Comparator<CompareType> instance) {
this.instance = instance;
}
@Override
public int compare(CompareType first, CompareType second) {
return instance.compare(second, first);
}
}
}
相关信息
相关文章
hadoop ApplicationReportSerDeser 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦