// Test a query with 200 $or clauses t = db.jstests_orf; t.drop(); var a = []; var expectBounds = []; for( var i = 0; i < 200; ++i ) { a.push( {_id:i} ); expectBounds.push([i, i]); } a.forEach( function( x ) { t.save( x ); } ); // This $or query is answered as an index scan over // a series of _id index point intervals. explain = t.find( {$or:a} ).hint( {_id: 1} ).explain( true ); printjson( explain ); assert.eq( 'BtreeCursor _id_', explain.cursor, 'cursor' ); assert.eq( expectBounds, explain.indexBounds['_id'], 'indexBounds' ); assert.eq( 200, explain.n, 'n' ); assert.eq( 200, explain.nscanned, 'nscanned' ); assert.eq( 200, explain.nscannedObjects, 'nscannedObjects' ); assert.eq( false, explain.isMultiKey, 'isMultiKey' ); assert.eq( false, explain.scanAndOrder, 'scanAndOrder' ); assert.eq( false, explain.indexOnly, 'indexOnly' ); assert.eq( 200, t.count( {$or:a} ) );