jstests/libs/fts.js


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// Utility functions for FTS tests
//
function queryIDS( coll, search, filter, extra, limit ){
    var query = { "$text" : { "$search" : search }};
    if ( extra )
        query = { "$text" : Object.extend( { "$search" : search }, extra ) };
    if ( filter )
        Object.extend( query, filter );

    var result;
    if (limit)
        result = coll.find( query,  { score: { "$meta" : "textScore" } }  ).sort( { score: { "$meta" : "textScore" } }).limit(limit);
    else
        result = coll.find( query,  { score: { "$meta" : "textScore" } }  ).sort( { score: { "$meta" : "textScore" } });

    return getIDS( result );
}

// Return an array of _ids from a cursor
function getIDS( cursor ){
    if ( ! cursor)
        return [];

    return cursor.map( function(z){ return z._id; } );
}