/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, Lotus
* Development Corporation., http://www.lotus.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xalan.extensions;
import java.util.Hashtable;
/**
* <meta name="usage" content="internal"/>
* Abstract base class handling the java language extensions for XPath.
* This base class provides cache management shared by all of the
* various java extension handlers.
*
*/
public abstract class ExtensionHandlerJava extends ExtensionHandler
{
/** Extension class name */
protected String m_className = "";
/** Table of cached methods */
private Hashtable m_cachedMethods = new Hashtable();
/**
* Construct a new extension handler given all the information
* needed.
*
* @param namespaceUri the extension namespace URI that I'm implementing
* @param funcNames string containing list of functions of extension NS
* @param lang language of code implementing the extension
* @param srcURL value of src attribute (if any) - treated as a URL
* or a classname depending on the value of lang. If
* srcURL is not null, then scriptSrc is ignored.
* @param scriptSrc the actual script code (if any)
* @param scriptLang the scripting language
* @param className the extension class name
*/
protected ExtensionHandlerJava(String namespaceUri, String scriptLang,
String className)
{
super(namespaceUri, scriptLang);
m_className = className;
}
/**
* Look up the entry in the method cache.
* @param methodKey A key that uniquely identifies this invocation in
* the stylesheet.
* @param objType A Class object or instance object representing the type
* @param methodArgs An array of the XObject arguments to be used for
* function mangling.
*
* @return The given method from the method cache
*/
public Object getFromCache(Object methodKey, Object objType,
Object[] methodArgs)
{
// Eventually, we want to insert code to mangle the methodKey with methodArgs
return m_cachedMethods.get(methodKey);
}
/**
* Add a new entry into the method cache.
* @param methodKey A key that uniquely identifies this invocation in
* the stylesheet.
* @param objType A Class object or instance object representing the type
* @param methodArgs An array of the XObject arguments to be used for
* function mangling.
* @param methodObj A Class object or instance object representing the method
*
* @return The cached method object
*/
public Object putToCache(Object methodKey, Object objType,
Object[] methodArgs, Object methodObj)
{
// Eventually, we want to insert code to mangle the methodKey with methodArgs
return m_cachedMethods.put(methodKey, methodObj);
}
}