com.bitranger.parknshop.common.dao.impl.PersistantMap.java Source code

Introduction

Here is the source code for com.bitranger.parknshop.common.dao.impl.PersistantMap.java

Source

/*******************************************************************************
 * Copyright (c) 2014 BitRangers (Team C1).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *      BitRangers (Team C1) - initial API and implementation
 ******************************************************************************/
package com.bitranger.parknshop.common.dao.impl;

import java.io.Serializable;
import java.sql.SQLException;
import java.util.Set;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.bitranger.parknshop.common.dao.IPersistantMap;
import com.bitranger.parknshop.util.Assert;
import com.bitranger.parknshop.util.ObjUtils;

/**
 *@author BowenCai
 *@since 9:24:53 PM
 */
public class PersistantMap extends HibernateDaoSupport implements IPersistantMap {

    @Override
    public boolean containsKey(String key) {
        return false;
    }

    @Override
    public Object get(final String key) {
        Assert.notBlank(key);

        byte[] b = getHibernateTemplate().execute(new HibernateCallback<byte[]>() {

            @Override
            public byte[] doInHibernate(Session arg0) throws HibernateException, SQLException {
                SQLQuery query = arg0.createSQLQuery("select val from ps_key_values where key = ?");
                query.setString(0, key);
                query.addScalar("val", Hibernate.BLOB);
                return (byte[]) query.uniqueResult();
            }
        });
        return ObjUtils.fromBytes(b);
    }

    @Override
    public void put(final String key, Object value) {
        Assert.isTrue(value instanceof Serializable, "value must be Serializable");
        final byte[] b = ObjUtils.toBytes(value);

        getHibernateTemplate().execute(new HibernateCallback<Void>() {

            @Override
            public Void doInHibernate(Session arg0) throws HibernateException, SQLException {
                SQLQuery query = arg0.createSQLQuery("insert into ps_key_value(key, val)values(?,?)");
                query.setString(0, key);
                query.setBinary(1, b);
                query.executeUpdate();
                return null;
            }
        });
    }

    @Override
    public Object remove(String key) {
        return null;
    }

    @Override
    public Set<String> keySet() {
        // TODO Auto-generated method stub
        return null;
    }

}