/usr/share/idl/thunderbird/nsIRDFCompositeDataSource.idl is in thunderbird-dev 1:52.8.0-1~deb8u1.
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/* 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 "nsIRDFDataSource.idl"
interface nsISimpleEnumerator;
/**
* An nsIRDFCompositeDataSource composes individual data sources, providing
* the illusion of a single, coherent RDF graph.
*/
[scriptable, uuid(96343820-307C-11D2-BC15-00805F912FE7)]
interface nsIRDFCompositeDataSource : nsIRDFDataSource {
/**
*
* Set this value to <code>true</code> if the composite datasource
* may contains at least one datasource that has <em>negative</em>
* assertions. (This is the default.)
*
* Set this value to <code>false</code> if none of the datasources
* being composed contains a negative assertion. This allows the
* composite datasource to perform some query optimizations.
*
* By default, this value is <code>true</true>.
*/
attribute boolean allowNegativeAssertions;
/**
* Set to <code>true</code> if the composite datasource should
* take care to coalesce duplicate arcs when returning values from
* queries. (This is the default.)
*
* Set to <code>false</code> if the composite datasource shouldn't
* bother to check for duplicates. This allows the composite
* datasource to more efficiently answer queries.
*
* By default, this value is <code>true</code>.
*/
attribute boolean coalesceDuplicateArcs;
/**
* Add a datasource the the composite data source.
* @param aDataSource the datasource to add to composite
*/
void AddDataSource(in nsIRDFDataSource aDataSource);
/**
* Remove a datasource from the composite data source.
* @param aDataSource the datasource to remove from the composite
*/
void RemoveDataSource(in nsIRDFDataSource aDataSource);
/**
* Retrieve the datasources in the composite data source.
* @return an nsISimpleEnumerator that will enumerate each
* of the datasources in the composite
*/
nsISimpleEnumerator GetDataSources();
};
%{C++
extern nsresult
NS_NewRDFCompositeDataSource(nsIRDFCompositeDataSource** result);
%}
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