/*
* 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.jdbc2;
import org.jboss.ejb.plugins.cmp.jdbc2.bridge.JDBCEntityBridge2;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCQueryMetaData;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCJBossQLQueryMetaData;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCQlQueryMetaData;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCDeclaredQueryMetaData;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCDynamicQLQueryMetaData;
import org.jboss.deployment.DeploymentException;
import javax.ejb.FinderException;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
/**
* @author <a href="mailto:alex@jboss.org">Alexey Loubyansky</a>
* @version <tt>$Revision: 81030 $</tt>
*/
public class QueryFactory
{
private final Map queriesByMethod = new HashMap();
private final JDBCEntityBridge2 entity;
public QueryFactory(JDBCEntityBridge2 entity)
{
this.entity = entity;
}
public QueryCommand getQueryCommand(Method queryMethod) throws FinderException
{
QueryCommand queryCommand = (QueryCommand)queriesByMethod.get(queryMethod);
if(queryCommand == null)
{
throw new FinderException("Unknown query method: " + queryMethod);
}
return queryCommand;
}
public void init() throws DeploymentException
{
Method findByPkMethod;
Class home = entity.getHomeClass();
if(home != null)
{
try
{
findByPkMethod = home.getMethod("findByPrimaryKey", new Class[]{entity.getPrimaryKeyClass()});
}
catch(NoSuchMethodException e)
{
throw new DeploymentException("Home interface " + home.getClass().getName() +
" does not contain findByPrimaryKey(" + entity.getPrimaryKeyClass().getName() + ")");
}
FindByPrimaryKeyCommand findByPk = new FindByPrimaryKeyCommand(entity);
queriesByMethod.put(findByPkMethod, findByPk);
}
Class local = entity.getLocalHomeClass();
if(local != null)
{
try
{
findByPkMethod = local.getMethod("findByPrimaryKey", new Class[]{entity.getPrimaryKeyClass()});
}
catch(NoSuchMethodException e)
{
throw new DeploymentException("Local home interface " + local.getClass().getName() +
" does not contain findByPrimaryKey(" + entity.getPrimaryKeyClass().getName() + ")");
}
FindByPrimaryKeyCommand findByPk = new FindByPrimaryKeyCommand(entity);
queriesByMethod.put(findByPkMethod, findByPk);
}
//
// Defined finders - Overrides automatic finders.
//
Iterator definedFinders = entity.getMetaData().getQueries().iterator();
while(definedFinders.hasNext())
{
JDBCQueryMetaData q = (JDBCQueryMetaData) definedFinders.next();
if(!queriesByMethod.containsKey(q.getMethod()))
{
if(q instanceof JDBCJBossQLQueryMetaData)
{
QueryCommand queryCommand = new JBossQLQueryCommand(entity, (JDBCJBossQLQueryMetaData)q);
queriesByMethod.put(q.getMethod(), queryCommand);
}
else if(q instanceof JDBCQlQueryMetaData)
{
QueryCommand queryCommand = new EJBQLQueryCommand(entity, (JDBCQlQueryMetaData)q);
queriesByMethod.put(q.getMethod(), queryCommand);
}
else if(q instanceof JDBCDeclaredQueryMetaData)
{
QueryCommand queryCommand = new DeclaredSQLQueryCommand(entity, (JDBCDeclaredQueryMetaData)q);
queriesByMethod.put(q.getMethod(), queryCommand);
}
else if(q instanceof JDBCDynamicQLQueryMetaData)
{
QueryCommand queryCommand = new DynamicQueryCommand(entity, (JDBCDynamicQLQueryMetaData)q);
queriesByMethod.put(q.getMethod(), queryCommand);
}
else
{
throw new DeploymentException("Unsupported query metadata: method=" + q.getMethod().getName() +
", metadata=" + q);
}
}
}
}
}