org.broadleafcommerce.cms.file.dao.StaticAssetStorageDaoImpl Maven / Gradle / Ivy

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/*
 * #%L
 * BroadleafCommerce CMS Module
 * %%
 * 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.cms.file.dao;

import org.broadleafcommerce.cms.file.domain.StaticAssetStorage;
import org.broadleafcommerce.cms.file.domain.StaticAssetStorageImpl;
import org.broadleafcommerce.common.persistence.EntityConfiguration;
import org.hibernate.ejb.HibernateEntityManager;
import org.springframework.stereotype.Repository;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Blob;

/**
 * Created by IntelliJ IDEA.
 * User: jfischer
 * Date: 9/8/11
 * Time: 7:31 PM
 * To change this template use File | Settings | File Templates.
 */
@Repository("blStaticAssetStorageDao")
public class StaticAssetStorageDaoImpl implements StaticAssetStorageDao {

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

    @Resource(name="blEntityConfiguration")
    protected EntityConfiguration entityConfiguration;

    @Override
    public StaticAssetStorage create() {
        return (StaticAssetStorage) entityConfiguration.createEntityInstance("org.broadleafcommerce.cms.file.domain.StaticAssetStorage");
    }

    @Override
    public Blob createBlob(MultipartFile uploadedFile) throws IOException {
        Long size = uploadedFile.getSize();
        InputStream inputStream = uploadedFile.getInputStream();
        //We'll work with Blob instances and streams so that the uploaded files are never read into memory
        return ((HibernateEntityManager) em).getSession().getLobHelper().createBlob(inputStream, size);
    }

    @Override
    public StaticAssetStorage readStaticAssetStorageById(Long id) {
        return (StaticAssetStorage) em.find(StaticAssetStorageImpl.class, id);
    }

    @Override
    public StaticAssetStorage readStaticAssetStorageByStaticAssetId(Long id) {
        Query query = em.createNamedQuery("BC_READ_STATIC_ASSET_STORAGE_BY_STATIC_ASSET_ID");
        query.setParameter("id", id);

        return (StaticAssetStorage) query.getSingleResult();
    }

    @Override
    public StaticAssetStorage save(StaticAssetStorage assetStorage) {
        if (em.contains(assetStorage)) {
            return em.merge(assetStorage);
        }
        em.persist(assetStorage);
        em.flush();
        return assetStorage;
    }

    @Override
    public void delete(StaticAssetStorage assetStorage) {
        if (!em.contains(assetStorage)) {
            assetStorage = (StaticAssetStorage) readStaticAssetStorageById(assetStorage.getId());
        }
        em.remove(assetStorage);
    }
}