mirror of https://github.com/mongodb/mongo
52 lines
1.7 KiB
JavaScript
52 lines
1.7 KiB
JavaScript
// Nested $elemMatch clauses. SERVER-5741
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let t = db.jstests_arrayfind7;
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t.drop();
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t.save({a: [{b: [{c: 1, d: 2}]}]});
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function checkElemMatchMatches() {
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assert.eq(1, t.count({a: {$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.createIndex({"a.b.c": 1});
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checkElemMatchMatches();
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function checkElemMatch(index, document, query) {
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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.createIndex(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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}
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// Two constraints within a nested $elemMatch expression.
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checkElemMatch({"a.b.c": 1}, {a: [{b: [{c: 1}]}]}, {a: {$elemMatch: {b: {$elemMatch: {c: {$gte: 1, $lte: 1}}}}}});
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// Two constraints within a nested $elemMatch expression, one of which contains the other.
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checkElemMatch({"a.b.c": 1}, {a: [{b: [{c: 2}]}]}, {a: {$elemMatch: {b: {$elemMatch: {c: {$gte: 1, $in: [2]}}}}}});
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// Two nested $elemMatch expressions.
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checkElemMatch(
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{"a.d.e": 1, "a.b.c": 1},
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{a: [{b: [{c: 1}], d: [{e: 1}]}]},
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{
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a: {$elemMatch: {d: {$elemMatch: {e: {$lte: 1}}}, b: {$elemMatch: {c: {$gte: 1}}}}},
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},
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);
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// A non $elemMatch expression and a nested $elemMatch expression.
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checkElemMatch(
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{"a.x": 1, "a.b.c": 1},
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{a: [{b: [{c: 1}], x: 1}]},
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{"a.x": 1, a: {$elemMatch: {b: {$elemMatch: {c: {$gte: 1}}}}}},
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);
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// $elemMatch is applied directly to a top level field.
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checkElemMatch({"a.b.c": 1}, {a: [{b: [{c: [1]}]}]}, {a: {$elemMatch: {"b.c": {$elemMatch: {$gte: 1, $lte: 1}}}}});
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