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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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****************************************************************/
package org.apache.cayenne.access;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import org.apache.cayenne.dba.AutoAdapter;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.dba.hsqldb.HSQLDBAdapter;
/**
* A helper class that handles postprocessing after the schema generation operation. E.g.
* some databases require a checkpoint command to be run for the schema changes to be
* flushed to disk.
*
* @author Andrus Adamchik
*/
class DbGeneratorPostprocessor {
private static final Map postprocessors;
static {
postprocessors = new HashMap();
postprocessors.put(HSQLDBAdapter.class.getName(), new HSQLDBPostprocessor());
}
void execute(Connection connection) throws SQLException {
DbAdapter adapter = AutoAdapter.getDefaultFactory().createAdapter(
connection.getMetaData());
if (adapter != null) {
Postprocessor postprocessor = (Postprocessor) postprocessors.get(adapter
.getClass()
.getName());
if (postprocessor != null) {
postprocessor.execute(connection);
}
}
}
static abstract class Postprocessor {
abstract void execute(Connection c) throws SQLException;
}
static class HSQLDBPostprocessor extends Postprocessor {
@Override
void execute(Connection c) throws SQLException {
PreparedStatement st = c.prepareStatement("CHECKPOINT");
try {
st.execute();
}
finally {
st.close();
}
}
}
}