com.clican.pluto.cms.dao.hibernate.BaseDao.java Source code

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Here is the source code for com.clican.pluto.cms.dao.hibernate.BaseDao.java

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/**
 * The Clican-Pluto software suit is Copyright 2009, Clican Company
 * and individual contributors, and is licensed under the GNU LGPL.
 *
 * @author wezhang
 *
 */
package com.clican.pluto.cms.dao.hibernate;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.clican.pluto.cms.dao.Dao;
import com.clican.pluto.orm.dynamic.inter.IPojo;

/**
 * This class implement the <code>Dao</code> interface via the 3rd-Party ORM
 * software-Hibernate.
 * 
 * It extends the <code>HibernateDaoSupport</code> class. It also means we can
 * use the <code>HibernateTemplate</code> to interact with the Hibernate
 * interface.
 * <p>
 * It also will provide some protected method used by subclass(e.g. get the
 * comma-split parameter string from <code>java.util.Collection<code> or array). 
 * <p>
 * As these common method shall be usually used, we implement them in the <code>BaseDao</code>
 * 
 * @since 0.0.1
 * @author clican
 * 
 */
public class BaseDao extends HibernateDaoSupport implements Dao {

    protected Log log = LogFactory.getLog(getClass());

    @SuppressWarnings("unchecked")
    protected void initializeLazySet(Serializable obj, String propertyName) {
        try {
            Method method = obj.getClass().getMethod(
                    "get" + propertyName.substring(0, 1).toUpperCase() + propertyName.substring(1), new Class[] {});
            Set<Serializable> property = (Set<Serializable>) method.invoke(obj, new Object[] {});
            if (property == null) {
                return;
            }
            for (Serializable s : property) {
                if (s.getClass().getName().equals(obj.getClass().getName())) {
                    initializeLazySet(s, propertyName);
                }
            }
        } catch (Exception e) {
            log.error("", e);
        }
    }

    @Override
    protected HibernateTemplate createHibernateTemplate(SessionFactory sessionFactory) {
        HibernateTemplate hibernateTemplate = super.createHibernateTemplate(sessionFactory);
        hibernateTemplate.setCheckWriteOperations(false);
        return hibernateTemplate;
    }

    /**
     * @see Dao#delete(Serializable)
     */
    public void delete(Serializable object) {
        getHibernateTemplate().delete(object);
    }

    /**
     * @see Dao#save(Serializable)
     */
    public void save(Serializable object) {
        getHibernateTemplate().save(object);
    }

    /**
     * @see Dao#update(Serializable)
     */
    public void update(Serializable object) {
        getHibernateTemplate().update(object);
    }

    protected String getInString(Collection<? extends IPojo> collection) {
        StringBuffer str = new StringBuffer();
        str.append("(");
        for (IPojo pojo : collection) {
            str.append(pojo.getId());
            str.append(",");
        }
        return str.substring(0, str.length() - 1) + ")";
    }

    protected String getInString(IPojo[] array) {
        StringBuffer str = new StringBuffer();
        str.append("(");
        for (IPojo pojo : array) {
            str.append(pojo.getId());
            str.append(",");
        }
        return str.substring(0, str.length() - 1) + ")";
    }

}
// $Id: BaseDao.java 441 2009-06-05 09:04:20Z clican $