Attached is the new CatalogFactory interface that I proposed a while
back. I welcome any comments, concerns or objections. I will be
providing a default implentation (as Craig has suggested) but I'd like
to get feedback on the interface first.
Thanks,
sean
/*
* Copyright 1999-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.chain;
/**
* <p>A [EMAIL PROTECTED] CatalogFactory} is a class used to store and retrieve [EMAIL PROTECTED] Catalog}s. The factory allows for a default
* [EMAIL PROTECTED] Catalog} as well as [EMAIL PROTECTED] Catalog}s stored with a name key. Follows the Factory pattern (see GoF).</p>
*
* @author Sean Schofield
* @version
*/
public interface CatalogFactory {
/**
* Returns a instance of CatalogFactory.
* @return an instance of CatalogFactory
*/
public CatalogFactory getInstance();
/**
* Gets the default instance of Catalog associated with the factory.
* @return the default Catalog instance
*/
public Catalog getCatalog();
/**
* Sets the default instance of Catalog associated with the factory.
* @param catalog the default Catalog instance
*/
public void setCatalog(Catalog catalog);
/**
* Retrieves a Catalog instance by name.
* @param name the name of the Catalog to retrieve
* @return the specified Catalog
*/
public Catalog getCatalog(String name);
/**
* Adds a named instance of Catalog to the factory (for subsequent retrieval later).
* @param name the name of the Catalog to add
* @param catalog the Catalog to add
*/
public void addCatalog(String name, Catalog catalog);
}
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