com.jeesuite.mybatis.plugin.PluginsEntrypoint Maven / Gradle / Ivy
package com.jeesuite.mybatis.plugin;
import java.util.List;
import java.util.Properties;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Plugin;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import com.jeesuite.mybatis.core.InterceptorHandler;
import com.jeesuite.mybatis.core.InterceptorType;
import com.jeesuite.mybatis.plugin.cache.CacheHandler;
/**
* mybatis 插件入口
* @description
* @author vakin
* @date 2015年12月7日
* @Copyright (c) 2015, jwww
*/
@Intercepts({
@Signature(type = Executor.class, method = "update", args = {
MappedStatement.class, Object.class }),
@Signature(type = Executor.class, method = "query", args = {
MappedStatement.class, Object.class, RowBounds.class,
ResultHandler.class }) })
public class PluginsEntrypoint implements Interceptor{
private List interceptorHandlers;
public void setInterceptorHandlers(List interceptorHandlers) {
this.interceptorHandlers = interceptorHandlers;
}
@Override
public Object intercept(Invocation invocation) throws Throwable {
boolean proceed = false;
Object result = null;
try {
for (InterceptorHandler handler : interceptorHandlers) {
Object object = handler.onInterceptor(invocation);
if(handler.getInterceptorType().equals(InterceptorType.around)){
result = object;
//查询缓存命中，则不执行分库和读写分离的处理器
if(result != null && handler instanceof CacheHandler){
break;
}
}
}
if(result == null){
result = invocation.proceed();
proceed = true;
}
return result;
} finally {
for (InterceptorHandler handler : interceptorHandlers) {
handler.onFinished(invocation,proceed ? result : null);
}
}
}
@Override
public Object plugin(Object target) {
if (target instanceof Executor) {
return Plugin.wrap(target, this);
} else {
return target;
}
}
@Override
public void setProperties(Properties properties) {
}
}