1 files changed, 38 insertions, 0 deletions
diff --git a/rdf/base/rdfIDataSource.idl b/rdf/base/rdfIDataSource.idl
new file mode 100644
index 000000000..848cbca11
--- /dev/null
+++ b/rdf/base/rdfIDataSource.idl
@@ -0,0 +1,38 @@
+/* -*- Mode: IDL; 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 "nsISupports.idl"
+
+interface rdfITripleVisitor;
+
+/**
+ * Interface used in RDF to describe data sources.
+ *
+ * @status PLASMA
+ */
+
+[scriptable, uuid(ebce86bd-1568-4a34-a808-9ccf9cde8087)]
+interface rdfIDataSource : nsISupports
+{
+    /**
+     * Visit all the subject resources in the datasource. The order is
+     * intederminate and may change from one invocation to the next.
+     * The subjects will be in the aSubject argument in calls into
+     * aVisitor, aPredicate and aObject will be null.
+     * @note Implementations may throw NS_ERROR_NOT_IMPLEMENTED for
+     * this method, but in this case RDF serializations of this
+     * datasource will not be possible.
+     */
+    void visitAllSubjects(in rdfITripleVisitor aVisitor);
+
+    /**
+     * Visit all the triples in the datasource. The order is
+     * intederminate and may change from one invocation to the next.
+     * @note Implementations may throw NS_ERROR_NOT_IMPLEMENTED for
+     * this method, but in this case RDF serializations of this
+     * datasource will not be possible.
+     */
+    void visitAllTriples(in rdfITripleVisitor aVisitor);
+};