/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* 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.alibaba.druid.support.ibatis;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import com.alibaba.druid.support.logging.Log;
import com.alibaba.druid.support.logging.LogFactory;
import com.ibatis.sqlmap.client.SqlMapExecutor;
import com.ibatis.sqlmap.engine.impl.SqlMapClientImpl;
import com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl;
import com.ibatis.sqlmap.engine.scope.SessionScope;
public class IbatisUtils {
private static Log LOG = LogFactory.getLog(IbatisUtils.class);
private static boolean VERSION_2_3_4 = false;
private static Method methodGetId = null;
private static Method methodGetResource = null;
static {
try {
Class<?> clazz = Thread.currentThread().getContextClassLoader().loadClass("com.ibatis.sqlmap.engine.mapping.result.AutoResultMap");
Method[] methods = clazz.getMethods();
for (Method method : methods) {
if (method.equals("setResultObjectValues")) { // ibatis 2.3.4 add method 'setResultObjectValues'
VERSION_2_3_4 = true;
break;
}
}
} catch (Throwable e) {
// skip
}
}
public static boolean isVersion2_3_4() {
return VERSION_2_3_4;
}
public static SqlMapExecutor setClientImpl(SqlMapExecutor session, SqlMapClientImplWrapper clientImplWrapper) {
if (session == null || clientImplWrapper == null) {
return session;
}
if (session.getClass() == SqlMapSessionImpl.class) {
SqlMapSessionImpl sessionImpl = (SqlMapSessionImpl) session;
set(sessionImpl, clientImplWrapper);
}
return session;
}
/**
* 通过反射的方式得到id，能够兼容2.3.0和2.3.4
*
* @return
*/
protected static String getId(Object statement) {
try {
if (methodGetId == null) {
Class<?> clazz = statement.getClass();
methodGetId = clazz.getMethod("getId");
}
Object returnValue = methodGetId.invoke(statement);
if (returnValue == null) {
return null;
}
return returnValue.toString();
} catch (Exception ex) {
LOG.error("createIdError", ex);
return null;
}
}
/**
* 通过反射的方式得到resource，能够兼容2.3.0和2.3.4
*
* @return
*/
protected static String getResource(Object statement) {
try {
if (methodGetResource == null) {
methodGetResource = statement.getClass().getMethod("getResource");
}
return (String) methodGetResource.invoke(statement);
} catch (Exception ex) {
return null;
}
}
private static Field sessionField;
public static void set(SqlMapSessionImpl session, SqlMapClientImpl client) {
if (sessionField == null) {
for (Field field : SqlMapSessionImpl.class.getDeclaredFields()) {
if (field.getName().equals("session") || field.getName().equals("sessionScope")) {
sessionField = field;
sessionField.setAccessible(true);
break;
}
}
}
if (sessionField != null) {
SessionScope sessionScope;
try {
sessionScope = (SessionScope) sessionField.get(session);
if (sessionScope != null) {
if (sessionScope.getSqlMapClient() != null && sessionScope.getSqlMapClient().getClass() == SqlMapClientImpl.class) {
sessionScope.setSqlMapClient(client);
}
if (sessionScope.getSqlMapExecutor() != null && sessionScope.getSqlMapExecutor().getClass() == SqlMapClientImpl.class) {
sessionScope.setSqlMapExecutor(client);
}
if (sessionScope.getSqlMapTxMgr() != null && sessionScope.getSqlMapTxMgr().getClass() == SqlMapClientImpl.class) {
sessionScope.setSqlMapTxMgr(client);
}
}
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
}
}
}