/*
* 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.as.cmp.ejbql;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jboss.as.cmp.bridge.CMRFieldBridge;
import org.jboss.as.cmp.bridge.EntityBridge;
/**
* This class manages a symbol table for the EJB-QL parser.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @version $Revision: 81030 $
*/
public final class IdentifierManager {
private final Catalog catalog;
private final Map pathLists = new HashMap();
private final Map fieldLists = new HashMap();
private final Map identifiers = new HashMap();
public IdentifierManager(Catalog catalog) {
this.catalog = catalog;
}
public void declareRangeVariable(
String identifier,
String abstractSchemaName) {
identifiers.put(
identifier,
catalog.getEntityByAbstractSchemaName(abstractSchemaName));
}
public void declareCollectionMember(
String identifier,
String path) {
List fieldList = (List) fieldLists.get(path);
Object field = fieldList.get(fieldList.size() - 1);
if (!(field instanceof CMRFieldBridge)) {
throw new IllegalArgumentException("Path is collection valued: " + path);
}
CMRFieldBridge cmrField = (CMRFieldBridge) field;
if (cmrField.isSingleValued()) {
throw new IllegalArgumentException("Path is collection valued: " + path);
}
identifiers.put(identifier, cmrField.getRelatedEntity());
}
public EntityBridge getEntity(String identificationVariable) {
return (EntityBridge) identifiers.get(identificationVariable);
}
public void registerPath(
String path,
List pathList,
List fieldList) {
if (pathList.size() != fieldList.size()) {
throw new IllegalArgumentException("Path list and field list must " +
"have the same size: pathList.size=" + pathList.size() +
" fieldList.size=" + fieldList.size());
}
pathLists.put(path, pathList);
fieldLists.put(path, fieldList);
}
public List getPathList(String path) {
return (List) pathLists.get(path);
}
public List getFieldList(String path) {
return (List) fieldLists.get(path);
}
}