author David Anderson <>
Wed, 05 Oct 2011 18:37:11 -0700
changeset 105226 cad26d2fb5af799dfe030fd2a8948d617eac2f52
parent 77799 e7854b4d29ba905ae3994f821b160c989bac4260
child 105229 8cfeba5239a9e4f20c462d6fb20421b4e4e7c735
permissions -rw-r--r--
Backout merge.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is Mozilla Communicator client code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Chris Waterson <>
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#ifndef nsRDFTestNode_h__
#define nsRDFTestNode_h__

#include "nsRuleNetwork.h"

class nsIRDFResource;
class nsIRDFNode;

 * An abstract base class for all of the RDF-related tests. This interface
 * allows us to iterate over all of the RDF tests to find the one in the
 * network that is apropos for a newly-added assertion.
class nsRDFTestNode : public TestNode
    nsRDFTestNode(TestNode* aParent)
        : TestNode(aParent) {}

     * Determine whether the node can propagate an assertion
     * with the specified source, property, and target. If the
     * assertion can be propagated, aInitialBindings will be
     * initialized with appropriate variable-to-value assignments
     * to allow the rule network to start a constrain and propagate
     * search from this node in the network.
     * @return PR_TRUE if the node can propagate the specified
     * assertion.
    virtual PRBool CanPropagate(nsIRDFResource* aSource,
                                nsIRDFResource* aProperty,
                                nsIRDFNode* aTarget,
                                Instantiation& aInitialBindings) const = 0;

    virtual void Retract(nsIRDFResource* aSource,
                         nsIRDFResource* aProperty,
                         nsIRDFNode* aTarget) const = 0;

#endif // nsRDFTestNode_h__