org.opennaas.core.security.persistence.SecurityRepository.java Source code

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Here is the source code for org.opennaas.core.security.persistence.SecurityRepository.java

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package org.opennaas.core.security.persistence;

/*
 * #%L
 * OpenNaaS :: Core :: Security
 * %%
 * Copyright (C) 2007 - 2014 Fundaci Privada i2CAT, Internet i Innovaci a Catalunya
 * %%
 * This program 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 3 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.opennaas.core.persistence.PersistenceException;
import org.springframework.beans.factory.annotation.Required;

/**
 * 
 * @author Julio Carlos Barrera
 * @author Isart Canyameres Gimenez (i2cat)
 * 
 */
public class SecurityRepository {

    private static Log log = LogFactory.getLog(SecurityRepository.class);

    private EntityManagerFactory entityManagerFactory;
    private EntityManager entityManager;

    public SecurityRepository() {
    }

    public void init() throws Exception {
        try {
            initializeEntityManager();
        } catch (Exception e) {
            log.error("Error initializing Security Persistence!", e);
            throw e;
        }
    }

    private void initializeEntityManager() throws Exception {

        if (getEntityManager() == null) {
            if (getEntityManagerFactory() != null) {
                setEntityManager(getEntityManagerFactory().createEntityManager());
            }
        }

        if (getEntityManager() == null)
            throw new PersistenceException("Required EntityManager is null");
    }

    public void close() {
        EntityManager entityManager = getEntityManager();
        if (entityManager != null) {
            log.debug("Closing entity manager: " + entityManager);
            entityManager.flush();
            entityManager.close();
            setEntityManager(null);
        }
    }

    @Required
    @PersistenceContext
    public void setEntityManager(final EntityManager entityManager) {
        this.entityManager = entityManager;
    }

    public EntityManager getEntityManager() {
        return entityManager;
    }

    public EntityManagerFactory getEntityManagerFactory() {
        return entityManagerFactory;
    }

    public void setEntityManagerFactory(EntityManagerFactory entityManagerFactory) {
        this.entityManagerFactory = entityManagerFactory;
    }

}