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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsrootidl.idl"
#include "nsIRDFNode.idl"
/**
* An nsIRDFResource is an object that has unique identity in the
* RDF data model. The object's identity is determined by its URI.
*/
[scriptable, uuid(fb9686a7-719a-49dc-9107-10dea5739341)]
interface nsIRDFResource : nsIRDFNode {
/**
* The single-byte string value of the resource.
* @note THIS IS OBSOLETE. C++ should use GetValueConst and script
* should use .valueUTF8
*/
readonly attribute string Value;
/**
* The UTF-8 URI of the resource.
*/
readonly attribute AUTF8String ValueUTF8;
/**
* An unscriptable version used to avoid a string copy. Meant
* for use as a performance optimization. The string is encoded
* in UTF-8.
*/
[noscript] void GetValueConst([shared] out string aConstValue);
/**
* This method is called by the nsIRDFService after constructing
* a resource object to initialize its URI. You would not normally
* call this method directly
*/
void Init(in string uri);
/**
* Determine if the resource has the given URI.
*/
boolean EqualsString(in string aURI);
/**
* Retrieve the "delegate" object for this resource. A resource
* may have several delegate objects, each of whose lifetimes is
* bound to the life of the resource object.
*
* This method will return the delegate for the given key after
* QueryInterface()-ing it to the requested IID.
*
* If no delegate exists for the specified key, this method will
* attempt to create one using the component manager. Specifically,
* it will combine aKey with the resource's URI scheme to produce
* a ContractID as follows:
*
* component:/rdf/delegate-factory/[key]/[scheme]
*
* This ContractID will be used to locate a factory using the
* FindFactory() method of nsIComponentManager. If the nsIFactory
* exists, it will be used to create a "delegate factory"; that
* is, an object that supports nsIRDFDelegateFactory. The delegate
* factory will be used to construct the delegate object.
*/
void GetDelegate(in string aKey, in nsIIDRef aIID,
[iid_is(aIID),retval] out nsQIResult aResult);
/**
* Force a delegate to be "unbound" from the resource.
*
* Normally, a delegate object's lifetime will be identical to
* that of the resource to which it is bound; this method allows a
* delegate to unlink itself from an RDF resource prematurely.
*/
void ReleaseDelegate(in string aKey);
};
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