org.atemsource.atem.impl.hibernate.service.HibernateDao.java Source code

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Here is the source code for org.atemsource.atem.impl.hibernate.service.HibernateDao.java

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/*******************************************************************************
 * Stefan Meyer, 2012
 * 
 * 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 org.atemsource.atem.impl.hibernate.service;

import java.io.Serializable;
import java.util.Collections;
import java.util.List;

import org.atemsource.atem.api.infrastructure.exception.TechnicalException;
import org.atemsource.atem.api.service.Result;
import org.atemsource.atem.api.service.Sorting;
import org.hibernate.Criteria;
import org.hibernate.FetchMode;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

public class HibernateDao extends HibernateDaoSupport {

    public void deleteInTransaction(Object entity) {
        getSession().delete(entity);

    }

    public List find(String hql) {
        return getSession().createQuery(hql).list();
    }

    public Object findById(final Class entityClass, final Serializable primaryKey) {
        return getSession().get(entityClass, primaryKey);
    }

    public Result getEntities(final Class entityClass, final int startIndex, final int count,
            final Sorting sorting) {
        return getEntities(entityClass, startIndex, count, sorting, Collections.EMPTY_LIST);
    }

    public Result getEntities(Class entityClass, int startIndex, int count, Sorting sorting,
            List<String> associationPaths) {
        try {
            Criteria query = getSession().createCriteria(entityClass, "entity");
            if (count > 0) {
                query.setMaxResults(count);
            }
            if (startIndex >= 0) {
                query.setFirstResult(startIndex);
            }

            for (String associationPath : associationPaths) {
                query.setFetchMode(associationPath, FetchMode.SELECT);
            }
            List entities = query.list();
            Integer totalCount = entities.size();
            if (count <= 0) {
                totalCount = ((Number) getSession().createQuery("select count(*) from " + entityClass.getName())
                        .uniqueResult()).intValue();
            }
            return new Result(entities, totalCount);
        } catch (Exception e) {
            throw new TechnicalException("cannot get entities of type " + entityClass.getName(), e);
        }
    }

    public void saveInTransaction(final Object entity) {
        // Object o =
        // getSession().get("de.sinnerschrader.tcs.hzm.shop.entity.HistoryEntry",
        // 111687);
        getSession().save(entity);
    }
}