org.xmlpull.v1.builder.xpath.jaxen.SimpleFunctionContext Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of xpp3_xpath Show documentation
Show all versions of xpp3_xpath Show documentation
MXP1 is a stable XmlPull parsing engine that is based on ideas from XPP and in particular XPP2 but completely revised and rewritten to take the best advantage of latest JIT JVMs such as Hotspot in JDK 1.4+.
The newest version!
/*
* $Header: /l/extreme/cvs/codes/XPP3/java/src/java/xpath/org/xmlpull/v1/builder/xpath/jaxen/SimpleFunctionContext.java,v 1.2 2005/08/11 22:44:00 aslom Exp $
* $Revision: 1.2 $
* $Date: 2005/08/11 22:44:00 $
*
* ====================================================================
*
* Copyright (C) 2000-2002 bob mcwhirter & James Strachan.
* 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 disclaimer that follows
* these conditions in the documentation and/or other materials
* provided with the distribution.
*
* 3. The name "Jaxen" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact [email protected].
*
* 4. Products derived from this software may not be called "Jaxen", nor
* may "Jaxen" appear in their name, without prior written permission
* from the Jaxen Project Management ([email protected]).
*
* In addition, we request (but do not require) that you include in the
* end-user documentation provided with the redistribution and/or in the
* software itself an acknowledgement equivalent to the following:
* "This product includes software developed by the
* Jaxen Project (http://www.jaxen.org/)."
* Alternatively, the acknowledgment may be graphical using the logos
* available at http://www.jaxen.org/
*
* 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 Jaxen AUTHORS OR THE PROJECT
* 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 Jaxen Project and was originally
* created by bob mcwhirter and
* James Strachan . For more information on the
* Jaxen Project, please see FunctionContext.
*
*
* This is a simple table-based key-lookup implementation
* for FunctionContext which can be programmatically
* extended by registering additional functions.
*
*
* @see XPathFunctionContext
*
* @author bob mcwhirter
*/
public class SimpleFunctionContext implements FunctionContext
{
/** Table of functions. */
private HashMap functions;
/** Construct.
*
*
* Construct with an empty function lookup table.
*
*/
public SimpleFunctionContext()
{
this.functions = new HashMap();
}
/** Register a new function.
*
*
* By registering a new function, any XPath expression
* that utilizes this FunctionContext may
* refer-to and use the new function.
*
*
*
* Functions may exist either in an namespace or not.
* Namespace prefix-to-URI resolution is the responsibility
* of a {@link NamespaceContext}. Within this FunctionContext
* functions are only referenced using the URI, not
* the prefix.
*
*
*
* The namespace URI of a function may be null
* to indicate that it exists without a namespace.
*
*
* @param namespaceURI The namespace URI of the function to
* be registered with this context.
* @param localName The non-prefixed local portion of the
* function to be registered with this context.
* @param function A {@link Function} implementation object
* to be used when evaluating the function.
*/
public void registerFunction(String namespaceURI,
String localName,
Function function )
{
this.functions.put( new QualifiedName(namespaceURI, localName),
function );
}
public Function getFunction(String namespaceURI,
String prefix,
String localName )
throws UnresolvableException
{
Object key = new QualifiedName( namespaceURI, localName );
if ( this.functions.containsKey(key) )
return (Function) this.functions.get( key );
else
throw new UnresolvableException( "Function " +
prefix + ":" + localName );
}
}