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comparison: rdf/base/idl/nsIRDFCompositeDataSource.idl
rdf/base/idl/nsIRDFCompositeDataSource.idl
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:21c01cafa6b5 |
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| 1 /* -*- Mode: C++; 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 "nsIRDFDataSource.idl" | |
| 7 | |
| 8 interface nsISimpleEnumerator; | |
| 9 | |
| 10 /** | |
| 11 * An nsIRDFCompositeDataSource composes individual data sources, providing | |
| 12 * the illusion of a single, coherent RDF graph. | |
| 13 */ | |
| 14 [scriptable, uuid(96343820-307C-11D2-BC15-00805F912FE7)] | |
| 15 interface nsIRDFCompositeDataSource : nsIRDFDataSource { | |
| 16 | |
| 17 /** | |
| 18 * | |
| 19 * Set this value to <code>true</code> if the composite datasource | |
| 20 * may contains at least one datasource that has <em>negative</em> | |
| 21 * assertions. (This is the default.) | |
| 22 * | |
| 23 * Set this value to <code>false</code> if none of the datasources | |
| 24 * being composed contains a negative assertion. This allows the | |
| 25 * composite datasource to perform some query optimizations. | |
| 26 * | |
| 27 * By default, this value is <code>true</true>. | |
| 28 */ | |
| 29 attribute boolean allowNegativeAssertions; | |
| 30 | |
| 31 /** | |
| 32 * Set to <code>true</code> if the composite datasource should | |
| 33 * take care to coalesce duplicate arcs when returning values from | |
| 34 * queries. (This is the default.) | |
| 35 * | |
| 36 * Set to <code>false</code> if the composite datasource shouldn't | |
| 37 * bother to check for duplicates. This allows the composite | |
| 38 * datasource to more efficiently answer queries. | |
| 39 * | |
| 40 * By default, this value is <code>true</code>. | |
| 41 */ | |
| 42 attribute boolean coalesceDuplicateArcs; | |
| 43 | |
| 44 /** | |
| 45 * Add a datasource the the composite data source. | |
| 46 * @param aDataSource the datasource to add to composite | |
| 47 */ | |
| 48 void AddDataSource(in nsIRDFDataSource aDataSource); | |
| 49 | |
| 50 /** | |
| 51 * Remove a datasource from the composite data source. | |
| 52 * @param aDataSource the datasource to remove from the composite | |
| 53 */ | |
| 54 void RemoveDataSource(in nsIRDFDataSource aDataSource); | |
| 55 | |
| 56 /** | |
| 57 * Retrieve the datasources in the composite data source. | |
| 58 * @return an nsISimpleEnumerator that will enumerate each | |
| 59 * of the datasources in the composite | |
| 60 */ | |
| 61 nsISimpleEnumerator GetDataSources(); | |
| 62 }; | |
| 63 | |
| 64 %{C++ | |
| 65 extern nsresult | |
| 66 NS_NewRDFCompositeDataSource(nsIRDFCompositeDataSource** result); | |
| 67 %} | |
| 68 |
