BannerServiceImpl.java

/*
 Copyright 2006 - 2010 Under Dusken

 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.
 */

package no.dusken.aranea.service;

import no.dusken.aranea.model.Banner;
import no.dusken.common.service.impl.GenericServiceImpl;
import org.springframework.dao.DataAccessException;
import org.springframework.dao.support.DataAccessUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Jan Ove Øyen <janoveo@underdusken.no> Date: 1/11/2006 Time: 08:41:05
 */
@Service("bannerService")
@Transactional(propagation = Propagation.SUPPORTS, isolation = Isolation.DEFAULT, readOnly = true)
public class BannerServiceImpl extends GenericServiceImpl<Banner> implements
        BannerService {

    public BannerServiceImpl() {
        super(Banner.class);
    }

    public Banner getBannerByHash(String hash) {
        Banner banner = null;
        try {
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("hash", hash);
            banner = (Banner) DataAccessUtils.uniqueResult(genericDao
                    .getByNamedQuery("banner_byhash", map));
        } catch (DataAccessException dae) {
            log.info("Unable to get banner", dae);
        }
        return banner;
    }

    public List<Banner> getBanners() {
        List<Banner> list = Collections.emptyList();
        try {
            list = genericDao.getByNamedQuery("banners_all", null);
        } catch (DataAccessException dae) {
            log.info("Unable to get Banners", dae);
        }
        return list;
    }
}