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AppFuse DAO backend implemented with Hibernate (http://hibernate.org).

There is a newer version: 3.5.0

package org.appfuse.dao.hibernate;

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.appfuse.dao.GenericDao;
import org.springframework.orm.ObjectRetrievalFailureException;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

/**
 * This class serves as the Base class for all other DAOs - namely to hold
 * common CRUD methods that they might all use. You should only need to extend
 * this class when your require custom CRUD logic.
 *
 * To register this class in your Spring context file, use the following XML.
 * 
 *      <bean id="fooDao" class="org.appfuse.dao.hibernate.GenericDaoHibernate">
 *          <constructor-arg value="org.appfuse.model.Foo"/>
 *          <property name="sessionFactory" ref="sessionFactory"/>
 *      </bean>
 * 
 *
 * @author Bryan Noll
 */
public class GenericDaoHibernate extends HibernateDaoSupport implements GenericDao {
    protected final Log log = LogFactory.getLog(getClass());
    private Class persistentClass;

    public GenericDaoHibernate(Class persistentClass) {
        this.persistentClass = persistentClass;
    }

    public List getAll() {
        return super.getHibernateTemplate().loadAll(this.persistentClass);
    }

    public T get(PK id) {
        T entity = (T) super.getHibernateTemplate().get(this.persistentClass, id);

        if (entity == null) {
            log.warn("Uh oh, '" + this.persistentClass + "' object with id '" + id + "' not found...");
            throw new ObjectRetrievalFailureException(this.persistentClass, id);
        }

        return entity;
    }

    public void save(T object) {
        super.getHibernateTemplate().saveOrUpdate(object);
    }

    public void remove(PK id) {
        super.getHibernateTemplate().delete(this.get(id));
    }
}