org.apache.openjpa.jdbc.kernel.BatchingOperationOrderUpdateManager Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.openjpa.jdbc.kernel;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Collection;
import org.apache.openjpa.jdbc.sql.RowManager;
import org.apache.openjpa.jdbc.sql.SQLExceptions;
import org.apache.openjpa.util.OpenJPAException;
/**
* Batch update manager that writes the SQL in object-level operation order.
* This update manager initiates a BatchPreparedStatementManagerImpl which
* will utilize the JDBC addBatch() and executeBatch() APIs to batch the
* statements for performance improvement.
* This is the plug-in class for UpdateManager to support statement
* batching for ordering. You can plug-in this statement batch implementation
* through the following property:
*
* < property name="openjpa.jdbc.UpdateManager"
* value="org.apache.openjpa.jdbc.kernel.BatchingOperationOrderUpdateManager"
* />
*
* @author Teresa Kan
*/
public class BatchingOperationOrderUpdateManager extends
OperationOrderUpdateManager {
protected PreparedStatementManager newPreparedStatementManager(
JDBCStore store, Connection conn) {
int batchLimit = dict.getBatchLimit();
return new BatchingPreparedStatementManagerImpl(store, conn,
batchLimit);
}
/*
* Override this method to flush any remaining batched row in the
* PreparedStatementManager.
*/
protected Collection flush(RowManager rowMgr,
PreparedStatementManager psMgr, Collection exceps) {
exceps = super.flush(rowMgr, psMgr, exceps);
BatchingPreparedStatementManagerImpl bPsMgr =
(BatchingPreparedStatementManagerImpl) psMgr;
try {
bPsMgr.flushBatch();
} catch (SQLException se) {
exceps = addException(exceps, SQLExceptions.getStore(se, dict));
} catch (OpenJPAException ke) {
exceps = addException(exceps, ke);
}
return exceps;
}
}