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A collection of classes shared by broadleaf profile, cms, admin, and core.
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/*
 * #%L
 * BroadleafCommerce Common Libraries
 * %%
 * Copyright (C) 2009 - 2013 Broadleaf Commerce
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package org.broadleafcommerce.common.config.dao;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.broadleafcommerce.common.cache.AbstractCacheMissAware;
import org.broadleafcommerce.common.cache.PersistentRetrieval;
import org.broadleafcommerce.common.config.domain.SystemProperty;
import org.broadleafcommerce.common.config.domain.SystemPropertyImpl;
import org.broadleafcommerce.common.extensibility.jpa.SiteDiscriminator;
import org.broadleafcommerce.common.persistence.EntityConfiguration;
import org.broadleafcommerce.common.web.BroadleafRequestContext;
import org.hibernate.ejb.QueryHints;
import org.springframework.stereotype.Repository;

import java.util.List;

import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;

/**
 * This DAO enables access to manage system properties that can be stored in the database.
 * 
 * User: Kelly Tisdell
 * Date: 6/20/12
 */
@Repository("blSystemPropertiesDao")
public class SystemPropertiesDaoImpl extends AbstractCacheMissAware implements SystemPropertiesDao{

    protected static final Log LOG = LogFactory.getLog(SystemPropertiesDaoImpl.class);

    @PersistenceContext(unitName="blPU")
    protected EntityManager em;

    @Resource(name="blEntityConfiguration")
    protected EntityConfiguration entityConfiguration;
    
    @Override
    public SystemProperty readById(Long id) {
        return em.find(SystemPropertyImpl.class, id);
    }

    @Override
    public SystemProperty saveSystemProperty(SystemProperty systemProperty) {
        return em.merge(systemProperty);
    }

    @Override
    public void deleteSystemProperty(SystemProperty systemProperty) {
        em.remove(systemProperty);
    }

    @Override
    public List readAllSystemProperties() {
        TypedQuery query = em.createNamedQuery("BC_READ_ALL_SYSTEM_PROPERTIES", SystemProperty.class);
        query.setHint(QueryHints.HINT_CACHEABLE, true);
        return query.getResultList();
    }

    @Override
    public SystemProperty readSystemPropertyByName(final String name) {
        return getCachedObject(SystemProperty.class, "blSystemPropertyNullCheckCache", "SYSTEM_PROPERTY_MISSING_CACHE_HIT_RATE", new PersistentRetrieval() {
            @Override
            public SystemProperty retrievePersistentObject() {
                TypedQuery query = em.createNamedQuery("BC_READ_SYSTEM_PROPERTIES_BY_NAME", SystemProperty.class);
                query.setParameter("propertyName", name);
                query.setHint(QueryHints.HINT_CACHEABLE, true);
                List props = query.getResultList();
                if (props != null && ! props.isEmpty()) {
                    return props.get(0);
                }
                return null;
            }
        }, name, getSite());
    }

    @Override
    public void removeFromCache(SystemProperty systemProperty) {
        String site = "";
        if (systemProperty instanceof SiteDiscriminator && ((SiteDiscriminator) systemProperty).getSiteDiscriminator() != null) {
            site = String.valueOf(((SiteDiscriminator) systemProperty).getSiteDiscriminator());
        }
        super.removeItemFromCache("blSystemPropertyNullCheckCache", systemProperty.getName(), site);
    }

    @Override
    public SystemProperty createNewSystemProperty() {
        return (SystemProperty)entityConfiguration.createEntityInstance(SystemProperty.class.getName());
    }

    @Override
    protected Log getLogger() {
        return LOG;
    }

    protected String getSite() {
        String site = "";
        BroadleafRequestContext brc = BroadleafRequestContext.getBroadleafRequestContext();
        if (brc != null) {
            if (brc.getSite() != null) {
                site = String.valueOf(brc.getSite().getId());
            }
        }
        return site;
    }
}