/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* 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 version 2 of the License.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.server.measurement;
import java.util.List;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.core.domain.auth.Subject;
import org.rhq.core.domain.resource.Resource;
import org.rhq.core.domain.resource.composite.ProblemResourceComposite;
import org.rhq.core.domain.server.PersistenceUtility;
import org.rhq.core.domain.util.PageControl;
import org.rhq.core.domain.util.PageList;
import org.rhq.core.domain.util.PageOrdering;
import org.rhq.enterprise.server.RHQConstants;
import org.rhq.enterprise.server.authz.AuthorizationManagerLocal;
/**
* A manager for working with problems such as out-of-bounds measurements.
*/
@Stateless
public class MeasurementProblemManagerBean implements MeasurementProblemManagerLocal, MeasurementProblemManagerRemote {
@SuppressWarnings("unused")
private final Log log = LogFactory.getLog(MeasurementProblemManagerBean.class);
@PersistenceContext(unitName = RHQConstants.PERSISTENCE_UNIT_NAME)
private EntityManager entityManager;
@EJB
private AuthorizationManagerLocal authorizationManager;
@SuppressWarnings("unchecked")
public PageList<ProblemResourceComposite> findProblemResources(Subject subject, long oldestDate, PageControl pc) {
pc.initDefaultOrderingField("COUNT(DISTINCT alert.id)", PageOrdering.DESC);
pc.addDefaultOrderingField("LENGTH(res.ancestry)");
pc.addDefaultOrderingField("res.name");
Query queryCount;
Query query;
if (authorizationManager.isInventoryManager(subject)) {
queryCount = entityManager.createNamedQuery(Resource.QUERY_FIND_PROBLEM_RESOURCES_ALERT_COUNT_ADMIN);
query = PersistenceUtility.createQueryWithOrderBy(entityManager,
Resource.QUERY_FIND_PROBLEM_RESOURCES_ALERT_ADMIN, pc);
} else {
queryCount = entityManager.createNamedQuery(Resource.QUERY_FIND_PROBLEM_RESOURCES_ALERT_COUNT);
query = PersistenceUtility.createQueryWithOrderBy(entityManager,
Resource.QUERY_FIND_PROBLEM_RESOURCES_ALERT, pc);
queryCount.setParameter("subject", subject);
query.setParameter("subject", subject);
}
queryCount.setParameter("oldest", oldestDate);
query.setParameter("oldest", oldestDate);
long count = (Long) queryCount.getSingleResult();
List<ProblemResourceComposite> results = query.getResultList();
return new PageList<ProblemResourceComposite>(results, (int) count, pc);
}
}