/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins.cmp.jdbc;
import org.jboss.deployment.DeploymentException;
import org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCEntityBridge;
import org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMPFieldBridge;
import org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCFieldBridge;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCQlQueryMetaData;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCQueryMetaData;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCReadAheadMetaData;
/**
* This class generates a query from EJB-QL.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @author <a href="mailto:alex@jboss.org">Alex Loubyansky</a>
* @version $Revision: 81030 $
*/
public final class JDBCEJBQLQuery extends JDBCAbstractQueryCommand
{
public JDBCEJBQLQuery(JDBCStoreManager manager,
JDBCQueryMetaData q)
throws DeploymentException
{
super(manager, q);
JDBCQlQueryMetaData metadata = (JDBCQlQueryMetaData) q;
if(getLog().isDebugEnabled())
{
getLog().debug("EJB-QL: " + metadata.getEjbQl());
}
QLCompiler compiler = JDBCQueryManager.getInstance(metadata.getQLCompilerClass(), manager.getCatalog());
try
{
compiler.compileEJBQL(
metadata.getEjbQl(),
metadata.getMethod().getReturnType(),
metadata.getMethod().getParameterTypes(),
metadata);
}
catch(Throwable t)
{
log.error(t.getMessage(), t);
throw new DeploymentException("Error compiling EJB-QL statement for EJB '" +
manager.getContainer().getBeanMetaData().getEjbName() + "': " + metadata.getEjbQl(), t);
}
setSQL(compiler.getSQL());
// set select object
if(compiler.isSelectEntity())
{
JDBCEntityBridge selectEntity = (JDBCEntityBridge) compiler.getSelectEntity();
// set the select entity
setSelectEntity(selectEntity);
// set the preload fields
JDBCReadAheadMetaData readahead = metadata.getReadAhead();
if(readahead.isOnFind())
{
setEagerLoadGroup(readahead.getEagerLoadGroup());
setOnFindCMRList(compiler.getLeftJoinCMRList());
// exclude non-searchable columns if distinct is used
if(compiler.isSelectDistinct())
{
boolean[] mask = getEagerLoadMask();
JDBCFieldBridge[] tableFields = selectEntity.getTableFields();
for(int i = 0; i < tableFields.length; ++i)
{
if(mask[i] && !tableFields[i].getJDBCType().isSearchable())
{
mask[i] = false;
}
}
}
}
}
else if(compiler.isSelectField())
{
setSelectField((JDBCCMPFieldBridge)compiler.getSelectField());
}
else
{
setSelectFunction(compiler.getSelectFunction(), manager);
}
// get the parameter order
setParameterList(compiler.getInputParameters());
}
}