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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+ * @note THIS IS OBSOLETE.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);
+};
+
+