39 lines
1001 B
JavaScript
39 lines
1001 B
JavaScript
/**
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* Tests the autoparameterization of the SBE cached plan that includes positional projection.
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*/
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(function() {
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"use strict";
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load("jstests/libs/collection_drop_recreate.js");
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const coll = db.plan_cache_positional_projection;
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coll.drop();
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const nonMatchingDoc = {
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"c": 3
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};
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const matchingDoc1 = {
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"c": 2,
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"a": {"b": 3}
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};
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const matchingDoc2 = {
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"c": 2,
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"a": {"b": 1}
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};
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const arr = {
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"arr": [nonMatchingDoc, matchingDoc1, matchingDoc2]
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};
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assert.commandWorked(coll.insert(arr));
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// Run a query which can populate the plan cache.
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assert.eq(0,
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coll.find({"arr": {"$elemMatch": {"c": 99, "a.b": {"$exists": true}}}}, {"arr.$": 1})
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.itcount());
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// Run the same query but with different constants. This query can use the plan cache entry created
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// earlier.
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const result =
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coll.find({"arr": {"$elemMatch": {"c": 2, "a.b": {"$exists": true}}}}, {"arr.$": 1, "_id": 0})
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.toArray();
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assert.eq([{arr: [matchingDoc1]}], result, result);
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}());
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