com.ibatis.dao.client.template
Class ToplinkDaoTemplate

java.lang.Object
  com.ibatis.dao.client.template.DaoTemplate
      com.ibatis.dao.client.template.ToplinkDaoTemplate

All Implemented Interfaces:

Dao

public abstract class ToplinkDaoTemplate

extends DaoTemplate

A DaoTemplate for Toplink implementations that provides a convenient method to access the Toplink Session.

Version:

$Revision: 152595 $ $Date: 2004-12-28 09:46:14 -0700 (Tue, 28 Dec 2004) $

Author:

Wayne Gentile

Field Summary

Fields inherited from class com.ibatis.dao.client.template.DaoTemplate

daoManager

Constructor Summary

ToplinkDaoTemplate(DaoManager daoManager)
The DaoManager that manages this Dao instance will be passed in as the parameter to this constructor automatically upon instantiation.

Method Summary

protected int	getCount(java.lang.Class referenceClass, oracle.toplink.expressions.Expression expression) Returns a count of the number of objects in a result set given the specified expression.
protected oracle.toplink.sessions.Session	getSession() Gets the Toplink session associated with the current DaoTransaction that this Dao is working under.
protected oracle.toplink.sessions.UnitOfWork	getUnitOfWork() Gets the Toplink UnitOfWork associated with the current DaoTransaction that this Dao is working under.

Methods inherited from class java.lang.Object

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

Constructor Detail

ToplinkDaoTemplate

public ToplinkDaoTemplate(DaoManager daoManager)

The DaoManager that manages this Dao instance will be passed in as the parameter to this constructor automatically upon instantiation.

Parameters:

daoManager - The Dao manager instance for this template

Method Detail

getCount

protected int getCount(java.lang.Class referenceClass,
                       oracle.toplink.expressions.Expression expression)

Returns a count of the number of objects in a result set given the specified expression.

Parameters:

referenceClass - The reference class to use as instances in the result set

expression - The expression to use as a where clause

Returns:

The number of rows returned in the result set after executing the query

getSession

protected oracle.toplink.sessions.Session getSession()
                                              throws DaoException

Gets the Toplink session associated with the current DaoTransaction that this Dao is working under.

Returns:

A Toplink Session instance.

Throws:

DaoException - If a DaoException is thrown

getUnitOfWork

protected oracle.toplink.sessions.UnitOfWork getUnitOfWork()
                                                    throws DaoException

Gets the Toplink UnitOfWork associated with the current DaoTransaction that this Dao is working under.

Returns:

A Toplink UnitOfWork instance.

Throws:

DaoException - If a DaoException is thrown