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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
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.SharedSessionContractImplementor;
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 Queryable persister;
private final String sql;
private final List parameterSpecifications;
public BasicExecutor(HqlSqlWalker walker, Queryable persister) {
this.persister = persister;
try {
SqlGenerator gen = new SqlGenerator( walker.getSessionFactoryHelper().getFactory() );
gen.statement( walker.getAST() );
sql = gen.getSQL();
gen.getParseErrorHandler().throwQueryException();
parameterSpecifications = gen.getCollectedParameters();
}
catch ( RecognitionException e ) {
throw QuerySyntaxException.convert( e );
}
}
@Override
public String[] getSqlStatements() {
return new String[] { sql };
}
@Override
public int execute(QueryParameters parameters, SharedSessionContractImplementor session) throws HibernateException {
return doExecute(
parameters,
session,
session.getJdbcServices().getDialect()
.addSqlHintOrComment(
sql,
parameters,
session.getFactory().getSessionFactoryOptions().isCommentsEnabled()
),
parameterSpecifications
);
}
protected int doExecute(QueryParameters parameters, SharedSessionContractImplementor 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.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.getJdbcCoordinator().getResultSetReturn().executeUpdate( st );
}
finally {
if ( st != null ) {
session.getJdbcCoordinator().getLogicalConnection().getResourceRegistry().release( st );
session.getJdbcCoordinator().afterStatementExecution();
}
}
}
catch( SQLException sqle ) {
throw session.getJdbcServices().getSqlExceptionHelper().convert( sqle, "could not execute update query", sql );
}
}
}