/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.hql.internal.ast.exec;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.action.internal.BulkOperationCleanupAction;
import org.hibernate.engine.spi.QueryParameters;
import org.hibernate.engine.spi.RowSelection;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.event.spi.EventSource;
import org.hibernate.hql.internal.ast.HqlSqlWalker;
import org.hibernate.hql.internal.ast.QuerySyntaxException;
import org.hibernate.hql.internal.ast.SqlGenerator;
import org.hibernate.param.ParameterSpecification;
import org.hibernate.persister.entity.Queryable;
import antlr.RecognitionException;
/**
* Implementation of BasicExecutor.
*
* @author Steve Ebersole
*/
public class BasicExecutor implements StatementExecutor {
private final SessionFactoryImplementor factory;
private final Queryable persister;
private final String sql;
private final List parameterSpecifications;
public BasicExecutor(HqlSqlWalker walker, Queryable persister) {
this.factory = walker.getSessionFactoryHelper().getFactory();
this.persister = persister;
try {
SqlGenerator gen = new SqlGenerator( factory );
gen.statement( walker.getAST() );
sql = gen.getSQL();
gen.getParseErrorHandler().throwQueryException();
parameterSpecifications = gen.getCollectedParameters();
}
catch ( RecognitionException e ) {
throw QuerySyntaxException.convert( e );
}
}
public String[] getSqlStatements() {
return new String[] { sql };
}
public int execute(QueryParameters parameters, SessionImplementor session) throws HibernateException {
return doExecute( parameters, session, sql, parameterSpecifications );
}
protected int doExecute(QueryParameters parameters, SessionImplementor session, String sql,
List parameterSpecifications) throws HibernateException {
BulkOperationCleanupAction action = new BulkOperationCleanupAction( session, persister );
if ( session.isEventSource() ) {
( (EventSource) session ).getActionQueue().addAction( action );
}
else {
action.getAfterTransactionCompletionProcess().doAfterTransactionCompletion( true, session );
}
PreparedStatement st = null;
RowSelection selection = parameters.getRowSelection();
try {
try {
st = session.getTransactionCoordinator().getJdbcCoordinator().getStatementPreparer().prepareStatement( sql, false );
Iterator paramSpecItr = parameterSpecifications.iterator();
int pos = 1;
while ( paramSpecItr.hasNext() ) {
final ParameterSpecification paramSpec = (ParameterSpecification) paramSpecItr.next();
pos += paramSpec.bind( st, parameters, session, pos );
}
if ( selection != null ) {
if ( selection.getTimeout() != null ) {
st.setQueryTimeout( selection.getTimeout() );
}
}
return session.getTransactionCoordinator().getJdbcCoordinator().getResultSetReturn().executeUpdate( st );
}
finally {
if ( st != null ) {
session.getTransactionCoordinator().getJdbcCoordinator().release( st );
}
}
}
catch( SQLException sqle ) {
throw factory.getSQLExceptionHelper().convert( sqle, "could not execute update query", sql );
}
}
}