c3p0源码解析二（DriverManagerDataSource类）

最新推荐文章于 2017-09-05 15:08:11 发布

原创最新推荐文章于 2017-09-05 15:08:11 发布 · 1.9k 阅读

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本文介绍DriverManagerDataSource类的构造方法，包括如何通过C3P0配置初始化用户名和密码，并设置属性监听器。

1. DriverManagerDataSource类

    public DriverManagerDataSource()
    { this( true ); }

    public DriverManagerDataSource(boolean autoregister)
    {
        super( autoregister );

        setUpPropertyListeners();

        String user = C3P0Config.initializeStringPropertyVar("user", null);
        String password = C3P0Config.initializeStringPropertyVar("password", null);

        if (user != null)
            this.setUser( user );

        if (password != null)
            this.setPassword( password );
    }

2. 调用父类DriverManagerDataSourceBase

	public DriverManagerDataSourceBase( boolean autoregister )
	{
		if (autoregister)
		{
			this.identityToken = C3P0ImplUtils.allocateIdentityToken( this );
			C3P0Registry.reregister( this );
		}
	}

获取当前对象token并注册。

3. setUpPropertyListeners();

4. C3P0Config.initializeStringPropertyVar("user", null);

C3P0Config.initializeStringPropertyVar("password", null);

获取用户名/密码