/**
* Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
*
* 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.jfinal.plugin.activerecord.tx;
import java.sql.Connection;
import java.sql.SQLException;
import com.jfinal.aop.Interceptor;
import com.jfinal.aop.Invocation;
import com.jfinal.kit.LogKit;
import com.jfinal.plugin.activerecord.ActiveRecordException;
import com.jfinal.plugin.activerecord.Config;
import com.jfinal.plugin.activerecord.DbKit;
import com.jfinal.plugin.activerecord.NestedTransactionHelpException;
/**
* ActiveRecord declare transaction.
* Example: @Before(Tx.class)
*/
public class Tx implements Interceptor {
public static Config getConfigWithTxConfig(Invocation inv) {
TxConfig txConfig = inv.getMethod().getAnnotation(TxConfig.class);
if (txConfig == null)
txConfig = inv.getTarget().getClass().getAnnotation(TxConfig.class);
if (txConfig != null) {
Config config = DbKit.getConfig(txConfig.value());
if (config == null)
throw new RuntimeException("Config not found with TxConfig: " + txConfig.value());
return config;
}
return null;
}
protected int getTransactionLevel(Config config) {
return config.getTransactionLevel();
}
public void intercept(Invocation inv) {
Config config = getConfigWithTxConfig(inv);
if (config == null)
config = DbKit.getConfig();
Connection conn = config.getThreadLocalConnection();
if (conn != null) { // Nested transaction support
try {
if (conn.getTransactionIsolation() < getTransactionLevel(config))
conn.setTransactionIsolation(getTransactionLevel(config));
inv.invoke();
return ;
} catch (SQLException e) {
throw new ActiveRecordException(e);
}
}
Boolean autoCommit = null;
try {
conn = config.getConnection();
autoCommit = conn.getAutoCommit();
config.setThreadLocalConnection(conn);
conn.setTransactionIsolation(getTransactionLevel(config)); // conn.setTransactionIsolation(transactionLevel);
conn.setAutoCommit(false);
inv.invoke();
conn.commit();
} catch (NestedTransactionHelpException e) {
if (conn != null) try {conn.rollback();} catch (Exception e1) {LogKit.error(e1.getMessage(), e1);}
LogKit.logNothing(e);
} catch (Throwable t) {
if (conn != null) try {conn.rollback();} catch (Exception e1) {LogKit.error(e1.getMessage(), e1);}
throw t instanceof RuntimeException ? (RuntimeException)t : new ActiveRecordException(t);
}
finally {
try {
if (conn != null) {
if (autoCommit != null)
conn.setAutoCommit(autoCommit);
conn.close();
}
} catch (Throwable t) {
LogKit.error(t.getMessage(), t); // can not throw exception here, otherwise the more important exception in previous catch block can not be thrown
}
finally {
config.removeThreadLocalConnection(); // prevent memory leak
}
}
}
}