/*******************************************************************************
* Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* dmccann - June 4/2008 - 1.0M8 - Initial implementation
* dmccann - Nov. 7/2008 - Moved delegate key logic to SDOHelperContext
******************************************************************************/
package org.eclipse.persistence.sdo.helper.delegates;
import commonj.sdo.helper.HelperContext;
import commonj.sdo.impl.HelperProvider;
/**
* Abstract class for SDO helper delegators. Delegates will shared on an application
* basis. This class will return the key to be used to store/retrieve the delegates
* for a given application.
*/
public abstract class AbstractHelperDelegator {
// Hold the context containing all helpers so that we can preserve inter-helper relationships
protected HelperContext aHelperContext;
/**
* Return the helperContext that this instance is associated with.
* This context contains all helpers. If null, the default context
* is returned.
*
* @return set helper context or, if null, the default context
* @see commonj.sdo.helper.HelperContext
* @see commonj.sdo.impl.HelperProvider
*/
public HelperContext getHelperContext() {
if (null == aHelperContext) {
aHelperContext = HelperProvider.getDefaultContext();
}
return aHelperContext;
}
/**
* INTERNAL:
* Set the helperContext that this instance is associated with. This context
* will contain all helpers, so inter-helper relationships are preserved.
*
* @param helperContext
* @see commonj.sdo.helper.HelperContext
*/
public void setHelperContext(HelperContext helperContext) {
aHelperContext = helperContext;
}
}