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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/pattern/NamespaceTest.java,v 1.1 2005/05/16 23:59:26 aslom Exp $
* $Revision: 1.1 $
* $Date: 2005/05/16 23:59:26 $
*
* ====================================================================
*
* 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 .
*
* $Id: NamespaceTest.java,v 1.1 2005/05/16 23:59:26 aslom Exp $
*/
package org.xmlpull.infoset.xpath.jaxen.pattern;
import org.xmlpull.infoset.xpath.jaxen.Context;
import org.xmlpull.infoset.xpath.jaxen.Navigator;
/** NamespaceTest
tests for a given namespace URI.
*
* @author James Strachan
* @version $Revision: 1.1 $
*/
public class NamespaceTest extends NodeTest {
/** The prefix to match against */
private String prefix;
/** The type of node to match - either attribute or element */
private short nodeType;
public NamespaceTest(String prefix, short nodeType)
{
if ( prefix == null )
{
prefix = "";
}
this.prefix = prefix;
this.nodeType = nodeType;
}
/** @return true if the pattern matches the given node
*/
public boolean matches( Object node, Context context )
{
Navigator navigator = context.getNavigator();
String uri = getURI( node, context );
if ( nodeType == Pattern.ELEMENT_NODE )
{
return navigator.isElement( node )
&& uri.equals( navigator.getElementNamespaceUri( node ) );
}
else if ( nodeType == Pattern.ATTRIBUTE_NODE )
{
return navigator.isAttribute( node )
&& uri.equals( navigator.getAttributeNamespaceUri( node ) );
}
return false;
}
public double getPriority()
{
return -0.25;
}
public short getMatchType()
{
return nodeType;
}
public String getText()
{
return prefix + ":";
}
public String toString()
{
return super.toString() + "[ prefix: " + prefix + " type: " + nodeType + " ]";
}
/** Returns the URI of the current prefix or "" if no URI can be found
*/
protected String getURI(Object node, Context context)
{
String uri = context.getNavigator().translateNamespacePrefixToUri( prefix, node );
if ( uri == null )
{
uri = context.getContextSupport().translateNamespacePrefixToUri( prefix );
}
if ( uri == null )
{
uri = "";
}
return uri;
}
}