hadoop NumericValueConverter 源码
haddop NumericValueConverter 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-common/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/NumericValueConverter.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.server.timelineservice.storage.common;
import java.util.Comparator;
/**
* Extends ValueConverter interface for numeric converters to support numerical
* operations such as comparison, addition, etc.
*/
public interface NumericValueConverter extends ValueConverter,
Comparator<Number> {
/**
* Adds two or more numbers. If either of the numbers are null, it is taken as
* 0.
*
* @param num1 the first number to add.
* @param num2 the second number to add.
* @param numbers Rest of the numbers to be added.
* @return result after adding up the numbers.
*/
Number add(Number num1, Number num2, Number...numbers);
}
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