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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
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*
* 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
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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.access.jdbc;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.apache.cayenne.CayenneRuntimeException;
import org.apache.cayenne.access.OperationObserver;
import org.apache.cayenne.access.QueryLogger;
import org.apache.cayenne.access.QueryTranslator;
import org.apache.cayenne.access.trans.DeleteTranslator;
import org.apache.cayenne.access.trans.UpdateTranslator;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.map.EntityResolver;
import org.apache.cayenne.query.DeleteQuery;
import org.apache.cayenne.query.Query;
import org.apache.cayenne.query.UpdateQuery;
/**
* @since 1.2
* @author Andrus Adamchik
* @deprecated since 3.0 as corresponding delete and update queries are deprecated.
*/
public class UpdateAction extends BaseSQLAction {
protected Query query;
public UpdateAction(Query query, DbAdapter adapter, EntityResolver entityResolver) {
super(adapter, entityResolver);
this.query = query;
}
protected QueryTranslator createTranslator(Connection connection) {
QueryTranslator translator;
if (query instanceof UpdateQuery) {
translator = new UpdateTranslator();
}
else if (query instanceof DeleteQuery) {
translator = new DeleteTranslator();
}
else {
throw new CayenneRuntimeException("Can't make a translator for query "
+ query);
}
translator.setAdapter(getAdapter());
translator.setQuery(query);
translator.setEntityResolver(getEntityResolver());
translator.setConnection(connection);
return translator;
}
public void performAction(Connection connection, OperationObserver observer)
throws SQLException, Exception {
QueryTranslator translator = createTranslator(connection);
PreparedStatement statement = translator.createStatement();
try {
// execute update
int count = statement.executeUpdate();
QueryLogger.logUpdateCount(count);
// send results back to consumer
observer.nextCount(query, count);
}
finally {
statement.close();
}
}
}