/**
* Copyright (C) 2005 Orbeon, Inc.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU Lesser General Public License as published by the Free Software Foundation; either version
* 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
*/
/*
* @(#)$Id: SelectorMatcher.java,v 1.1 2005/05/04 23:55:58 ebruchez Exp $
*
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
*/
package org.orbeon.oxf.xforms.msv;
import org.orbeon.msv.grammar.xmlschema.IdentityConstraint;
import org.orbeon.msv.relaxng.datatype.Datatype;
/**
* XPath matcher that tests the selector of an identity constraint.
*
* This object is created whenever an element with identity constraints is found.
* XML Schema guarantees that we can see if an element has id constraints at the
* startElement method.
*
* This matcher then monitor startElement/endElement and find matches to the
* specified XPath. Every time it finds a match ("target node" in XML Schema
* terminology), it creates a FieldsMatcher.
*
* @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
*/
public class SelectorMatcher extends PathMatcher {
protected IdentityConstraint idConst;
final org.orbeon.dom.Element element;
SelectorMatcher(
IDConstraintChecker owner, IdentityConstraint idConst, final org.orbeon.dom.Element elt ) {
super(owner, idConst.selectors );
this.idConst = idConst;
element = elt;
// register this scope as active.
owner.pushActiveScope(idConst,this);
if(org.orbeon.msv.driver.textui.Debug.debug) {
System.out.println("new id scope is available for {"+idConst.localName+"}");
}
super.start( elt );
}
protected void onRemoved() {
super.onRemoved();
// this scope is no longer active.
owner.popActiveScope(idConst,this);
}
protected void onElementMatched( final org.orbeon.dom.Element elt ) {
if( org.orbeon.msv.driver.textui.Debug.debug )
System.out.println("find a match for a selector: "+idConst.localName);
// this element matches the path.
owner.add( new FieldsMatcher( this, elt ) );
}
protected void onAttributeMatched(final org.orbeon.dom.Attribute att, Datatype type ) {
// assertion failed:
// selectors cannot contain attribute steps.
throw new Error();
}
}