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XML Pull parser library developed by Extreme Computing Lab, Indian University
/*
* $Header: /l/extreme/cvs/codes/xpp5/xis5/infoset_xpath_jaxen/org/xmlpull/infoset/xpath/jaxen/ContextSupport.java,v 1.1 2005/05/16 23:59:18 aslom Exp $
* $Revision: 1.1 $
* $Date: 2005/05/16 23:59:18 $
*
* ====================================================================
*
* 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
* NOTE: This class is not typically used directly,
* but is exposed for writers of implementation-specific
* XPath packages.
*
*
* @see org.jaxen.dom4j.Dom4jXPath XPath for dom4j
* @see org.jaxen.jdom.JDOMXPath XPath for JDOM
* @see org.jaxen.dom.DOMXPath XPath for W3C DOM
* @see org.jaxen.exml.ElectricXPath XPath for Electric XML
*
* @author bob mcwhirter ([email protected])
*/
public class ContextSupport implements Serializable
{
private transient FunctionContext functionContext;
private NamespaceContext namespaceContext;
private VariableContext variableContext;
private Navigator navigator;
/** Construct an empty ContextSupport.
*/
public ContextSupport()
{
// intentionally left blank
}
/** Construct.
*
* @param namespaceContext The NamespaceContext.
* @param functionContext The FunctionContext.
* @param variableContext The VariableContext.
*/
public ContextSupport(NamespaceContext namespaceContext,
FunctionContext functionContext,
VariableContext variableContext,
Navigator navigator)
{
setNamespaceContext( namespaceContext );
setFunctionContext( functionContext );
setVariableContext( variableContext );
this.navigator = navigator;
}
public void setNamespaceContext(NamespaceContext namespaceContext)
{
this.namespaceContext = namespaceContext;
}
public void setFunctionContext(FunctionContext functionContext)
{
this.functionContext = functionContext;
}
public void setVariableContext(VariableContext variableContext)
{
this.variableContext = variableContext;
}
public NamespaceContext getNamespaceContext()
{
return this.namespaceContext;
}
public FunctionContext getFunctionContext()
{
return this.functionContext;
}
public VariableContext getVariableContext()
{
return this.variableContext;
}
public Navigator getNavigator()
{
return this.navigator;
}
public String translateNamespacePrefixToUri(String prefix)
{
NamespaceContext context = getNamespaceContext();
if ( context != null )
{
return context.translateNamespacePrefixToUri( prefix );
}
return null;
}
public Object getVariableValue( String namespaceURI,
String prefix,
String localName )
throws UnresolvableException
{
VariableContext context = getVariableContext();
if ( context != null )
{
return context.getVariableValue( namespaceURI, prefix, localName );
}
else
{
throw new UnresolvableException( "No variable context installed" );
}
}
public Function getFunction( String namespaceURI,
String prefix,
String localName )
throws UnresolvableException
{
FunctionContext context = getFunctionContext();
if ( context != null )
{
return context.getFunction( namespaceURI, prefix, localName );
}
else
{
throw new UnresolvableException( "No function context installed" );
}
}
}