com.bentofw.dao
Class DaoHelperFactory

java.lang.Object
  com.bentofw.dao.DaoHelperFactory

public class DaoHelperFactory
extends java.lang.Object

Given the fully qualified class name, this class creates the instance of SimpleDaoHelper interface.

Once the instance is created for the specified class name, this instance is cached. And the subsequent call of this method with the same class name return it soon, without creating another instance. Because all the available implementations of SimpleDaoHelper interface is Thread Safe, only the single instance will be enough.

Author:

Jun Inamori

See Also:

SimpleDaoHelper

Constructor Summary

DaoHelperFactory()

Method Summary

static SimpleDaoHelper

getDaoHelper(java.lang.String className) Given the fully qualified class name, this method creates the instance of SimpleDaoHelper interface.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DaoHelperFactory

public DaoHelperFactory()

Method Detail

getDaoHelper

public static SimpleDaoHelper getDaoHelper(java.lang.String className)
                                    throws NestedException

Given the fully qualified class name, this method creates the instance of SimpleDaoHelper interface.

In this package, the following 3 implementations are included:

• DaoHelperForJndi: Creates PreparedStatement by JNDI DataSource
• DaoHelperForJdbc: Creates PreparedStatement by JDBC Connection
• DaoHelperForPooledStatement: Creates PreparedStatement by OOP PooledStatement

All these implementations are packaged under com.bentofw.dao package. Please specify the fully qualified class name of one of these 3 implementations.

Once the instance is created for the specified class name, this instance is cached. And the subsequent call of this method with the same class name return it soon, without creating another instance. Because all the available implementations of SimpleDaoHelper interface is Thread Safe, only the single instance will be enough.

Parameters:

className - the fully qualified class name of the implementation of SimpleDaoHelper interface.

Returns:

The instance of SimpleDaoHelper.

Throws:

NestedException