69 lines
3.2 KiB
JavaScript
69 lines
3.2 KiB
JavaScript
// Nested $elemMatch clauses. SERVER-5741
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t = db.jstests_arrayfind7;
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t.drop();
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t.save( { a:[ { b:[ { c:1, d:2 } ] } ] } );
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function checkElemMatchMatches() {
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assert.eq( 1, t.count( { a:{ $elemMatch:{ b:{ $elemMatch:{ c:1, d:2 } } } } } ) );
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}
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// The document is matched using nested $elemMatch expressions, with and without an index.
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checkElemMatchMatches();
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t.ensureIndex( { 'a.b.c':1 } );
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checkElemMatchMatches();
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function checkIndexCharacterBasedBounds( index, document, query, singleKeyBounds, multiKeyBounds ) {
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// The document is matched without an index, and with single and multi key indexes.
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t.drop();
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t.save( document );
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assert.eq( 1, t.count( query ) );
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t.ensureIndex( index );
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assert.eq( 1, t.count( query ) );
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t.save( { a:{ b:{ c:[ 10, 11 ] } } } ); // Make the index multikey.
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assert.eq( 1, t.count( query ) );
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// The single and multi key index bounds are as expected.
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t.drop();
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t.ensureIndex( index );
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assert.eq( singleKeyBounds, t.find( query ).explain().indexBounds[ 'a.b.c' ] );
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t.save( { a:{ b:{ c:[ 10, 11 ] } } } );
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assert.eq( multiKeyBounds, t.find( query ).explain().indexBounds[ 'a.b.c' ] );
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}
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// Two constraints within a nested $elemMatch expression.
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checkIndexCharacterBasedBounds( { 'a.b.c':1 },
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{ a:[ { b:[ { c:1 } ] } ] },
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{ a:{ $elemMatch:{ b:{ $elemMatch:{ c:{ $gte:1, $lte:1 } } } } } },
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[ [ 1, 1 ] ],
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[ [ 1, 1.7976931348623157e+308 ] ] );
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// Two constraints within a nested $elemMatch expression, one of which contains the other.
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checkIndexCharacterBasedBounds( { 'a.b.c':1 },
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{ a:[ { b:[ { c:2 } ] } ] },
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{ a:{ $elemMatch:{ b:{ $elemMatch:{ c:{ $gte:1, $in:[2] } } } } } },
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[ [ 2, 2 ] ],
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[ [ 2, 2 ] ] );
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// Two nested $elemMatch expressions.
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checkIndexCharacterBasedBounds( { 'a.d.e':1, 'a.b.c':1 },
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{ a:[ { b:[ { c:1 } ], d:[ { e:1 } ] } ] },
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{ a:{ $elemMatch:{ d:{ $elemMatch:{ e:{ $lte:1 } } },
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b:{ $elemMatch:{ c:{ $gte:1 } } } } } },
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[ [ 1, 1.7976931348623157e+308 ] ],
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[ [ { $minElement:1 }, { $maxElement:1 } ] ] );
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// A non $elemMatch expression and a nested $elemMatch expression.
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checkIndexCharacterBasedBounds( { 'a.x':1, 'a.b.c':1 },
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{ a:[ { b:[ { c:1 } ], x:1 } ] },
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{ 'a.x':1, a:{ $elemMatch:{ b:{ $elemMatch:{ c:{ $gte:1 } } } } } },
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[ [ 1, 1.7976931348623157e+308 ] ],
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[ [ { $minElement:1 }, { $maxElement:1 } ] ] );
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// $elemMatch is applied directly to a top level field.
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checkIndexCharacterBasedBounds( { 'a.b.c':1 },
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{ a:[ { b:[ { c:[ 1 ] } ] } ] },
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{ a:{ $elemMatch:{ 'b.c':{ $elemMatch:{ $gte:1, $lte:1 } } } } },
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[ [ 1, 1 ] ],
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[ [ 1, 1 ] ] );
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