rdf/base/rdfIDataSource.idl

   1 /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsISupports.idl"
   7
   8 interface rdfITripleVisitor;
   9
  10 /**
  11  * Interface used in RDF to describe data sources.
  12  *
  13  * @status PLASMA
  14  */
  15
  16 [scriptable, uuid(ebce86bd-1568-4a34-a808-9ccf9cde8087)]
  17 interface rdfIDataSource : nsISupports
  18 {
  19     /**
  20      * Visit all the subject resources in the datasource. The order is
  21      * intederminate and may change from one invocation to the next.
  22      * The subjects will be in the aSubject argument in calls into
  23      * aVisitor, aPredicate and aObject will be null.
  24      * @note Implementations may throw NS_ERROR_NOT_IMPLEMENTED for
  25      * this method, but in this case RDF serializations of this
  26      * datasource will not be possible.
  27      */
  28     void visitAllSubjects(in rdfITripleVisitor aVisitor);
  29
  30     /**
  31      * Visit all the triples in the datasource. The order is
  32      * intederminate and may change from one invocation to the next.
  33      * @note Implementations may throw NS_ERROR_NOT_IMPLEMENTED for
  34      * this method, but in this case RDF serializations of this
  35      * datasource will not be possible.
  36      */
  37     void visitAllTriples(in rdfITripleVisitor aVisitor);
  38 };