/*
* This file is part of the WfMOpen project.
* Copyright (C) 2001-2006 Danet GmbH (www.danet.de), BU BTS.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: $
*
* $Log: $
*/
package de.danet.an.workflow.util;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Expression;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Property;
import de.danet.an.workflow.api.query.AndOperation;
import de.danet.an.workflow.api.query.ContextVariableEquality;
import de.danet.an.workflow.api.query.NotOperation;
import de.danet.an.workflow.api.query.OrOperation;
import de.danet.an.workflow.api.query.PropertyEquality;
import de.danet.an.workflow.api.query.FilterCriterion;
import de.danet.an.workflow.ejbs.core.ProcessDataStore;
/**
* This class provides utility methods for using Hibernate.
*
* @author mnl
*
*/
public class HibernateUtil {
public static Criterion convertFilterCriterion
(FilterCriterion criterion) {
if (criterion instanceof PropertyEquality) {
if (((PropertyEquality) criterion).getProperty().equals("key")) {
return Expression.idEq
(new Long
((String)((PropertyEquality) criterion).getValue()));
}
if (((PropertyEquality) criterion).getValue() == null) {
return Expression.isNull
(((PropertyEquality)criterion).getProperty());
}
return Expression.eq
(((PropertyEquality) criterion).getProperty(),
((PropertyEquality) criterion).getValue());
}
if (criterion instanceof NotOperation) {
return Expression.not
(convertFilterCriterion
(((NotOperation) criterion).getOperand()));
}
if (criterion instanceof AndOperation) {
return Expression.and
(convertFilterCriterion
(((AndOperation) criterion).getOperand1()),
convertFilterCriterion
(((AndOperation) criterion).getOperand2()));
}
if (criterion instanceof OrOperation) {
return Expression.or
(convertFilterCriterion
(((OrOperation) criterion).getOperand1()),
convertFilterCriterion
(((OrOperation) criterion).getOperand2()));
}
if (criterion instanceof ContextVariableEquality) {
DetachedCriteria sub
= DetachedCriteria.forClass(ProcessDataStore.DAO.class);
sub.setProjection(Projections.property("mapId"));
Criterion valueCond = null;
if (((ContextVariableEquality) criterion).getValue() == null) {
valueCond = Expression.and
(Expression.isNull("svalue"), Expression.isNull("bvalue"));
} else {
valueCond = Expression.eq
("svalue", ((ContextVariableEquality)criterion).getValue());
}
sub.add
(Expression.and
(Expression.eq("item", ((ContextVariableEquality)criterion)
.getContextVariable()),
valueCond));
return Property.forName("dbId").in(sub);
}
return null;
}
}