tk.mybatis.mapper.version.DefaultNextVersion Maven / Gradle / Ivy
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/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2017 [email protected]
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package tk.mybatis.mapper.version;
import java.sql.Timestamp;
/**
* @author liuzh
* @since 3.5.0
*/
public class DefaultNextVersion implements NextVersion {
@Override
public Object nextVersion(Object current) throws VersionException {
if (current == null) {
throw new VersionException("当前版本号为空!");
}
if (current instanceof Integer) {
return (Integer) current + 1;
} else if (current instanceof Long) {
return (Long) current + 1L;
} else if (current instanceof Timestamp) {
return new Timestamp(System.currentTimeMillis());
} else {
throw new VersionException("默认的 NextVersion 只支持 Integer, Long 和 java.sql.Timestamp 类型的版本号，如果有需要请自行扩展!");
}
}
}