buildframework/helium/sf/java/metadata/src/com/nokia/helium/metadata/model/metadata/SysdefUnitDAO.java
/*
* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of the License "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
package com.nokia.helium.metadata.model.metadata;
import java.io.File;
import java.util.List;
import javax.persistence.NoResultException;
import javax.persistence.TypedQuery;
import com.nokia.helium.metadata.JpaDAO;
/**
* Implements DAO for the Unit.
* Contains all helpers related to Unit manipulation.
*
*/
public class SysdefUnitDAO extends JpaDAO<SysdefUnit> {
/**
* Get a map of units rows based on the unit name.
* @return a map of (unitName, unit).
*/
public List<SysdefUnit> getUnits() {
return this.getEntityManager().createQuery("SELECT c from SysdefUnit c", SysdefUnit.class).getResultList();
}
/**
* Get a unit based on its model Id.
* @param id
* @return the entity representing the unit of null if not found.
*/
public SysdefUnit getUnitByLocation(File epocroot, File location) {
return getUnitByLocation(epocroot.toURI().relativize(location.toURI()).getPath());
}
public SysdefUnit getUnitByLocation(String location) {
TypedQuery<SysdefUnit> query = this.getEntityManager().createQuery("SELECT u from SysdefUnit u where u.location=?1", SysdefUnit.class);
query.setParameter(1, location);
try {
return query.getSingleResult();
} catch (NoResultException ex) {
return null;
}
}
}