pjs/rdf/include/nsIRDFNode.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIRDFNode_h__
#define nsIRDFNode_h__
#include "nsISupports.h"
class nsString;
class nsIAtom;
// {0F78DA50-8321-11d2-8EAC-00805F29F370}
#define NS_IRDFNODE_IID \
{ 0xf78da50, 0x8321, 0x11d2, { 0x8e, 0xac, 0x0, 0x80, 0x5f, 0x29, 0xf3, 0x70 } }
/**
A globally unique node in the RDF graph that can be compared
for equality using "==". Nodes are created using an instance of
nsIRDFResourceManager, which should be obtained from the service
manager:
nsIRDFResourceManager* mgr;
if (NS_SUCCEEDED(nsServiceManager::GetService(kCRDFResourceManagerCID,
kIRDFResourceManagerIID,
&mgr))) {
nsIRDFNode* node;
if (NS_SUCCEEDED(mgr->GetNode(nsString("http://foo.bar/"), node))) {
// do something useful here...
NS_IF_RELEASE(node);
}
nsServiceManager::ReleaseService(kCRDFManagerCID, mgr);
}
*/
class nsIRDFNode : public nsISupports {
public:
/**
* Get the string value of the node.
*/
NS_IMETHOD GetStringValue(nsString& value) const = 0;
/**
* Get the string value of the node as an atom
*/
NS_IMETHOD GetAtomValue(nsIAtom*& value) const = 0;
};
#endif // nsIRDFNode_h__