com.sharksharding.core.shard.ResolveIndex Maven / Gradle / Ivy
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/*
* Copyright 2015-2101 gaoxianglong
*
* Licensed 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 com.sharksharding.core.shard;
/**
* 解析读写分离的起始索引
*
* @author gaoxianglong
*
* @version 1.3.5
*/
public class ResolveIndex {
/**
* 获取master/slave的数据源启始索引
*
* @author gaoxianglong
*
* @param wr_index
* 读写起始索引,如比r0w1024
*
* @param operation
* true为master启始索引,false为slave启始索引
*
* @return int 启始索引
*/
public static int getBeginIndex(String wr_index, boolean operation) {
int index = -1;
wr_index = wr_index.toUpperCase();
String type = null;
if (operation) {
type = "W";
index = Integer.parseInt(wr_index.substring(wr_index.indexOf(type) + 1));
} else {
type = "R";
index = Integer.parseInt(wr_index.substring(wr_index.indexOf(type) + 1, wr_index.indexOf("W")));
}
return index;
}
}