061a086641
The actual change is in src/mongo/shell/collection.js with the remaining changes
to adjust tests to the new api.
The "ideal" arguments are now an array of pipeline ops and an optional object
with extra top-level options for the command (such as {explain: true}. For
backwards compatibility, we still support the varargs style where each argument
is a pipeline stage, but there is no way to specify extra parameters in this
mode.
41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
// SERVER-9841 $map expression to map over arrays
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load('jstests/aggregation/extras/utils.js');
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var t = db.server9841;
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t.drop();
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t.insert({
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simple: [1,2,3,4],
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nested: [{a: 1}, {a: 2}],
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mixed: [{a: 1}, {}, {a: 2}, {a: null}],
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notArray: 1,
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null: null,
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});
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function test(expression, expected) {
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var result = t.aggregate({$project:{_id:0, res: expression}}).toArray();
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assert.eq(result, [{res:expected}]);
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}
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test({$map: {input: "$simple", as: "var", in: '$$var'}}, [1,2,3,4]);
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test({$map: {input: "$simple", as: "var", in: {$add:[10, '$$var']}}}, [11,12,13,14]);
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test({$map: {input: "$nested", as: "var", in: '$$var.a'}}, [1,2]);
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test({$map: {input: "$nested", as: "CURRENT", in: '$a'}}, [1,2]);
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test({$map: {input: "$mixed", as: "var", in: '$$var.a'}}, [1,null,2,null]); // missing becomes null
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test({$map: {input: "$null", as: "var", in: '$$var'}}, null);
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// can't set ROOT
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assertErrorCode(t, {$project:{a:{$map:{input: "$simple", as: "ROOT", in: '$$ROOT'}}}}, 16867);
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// error on non-array
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assertErrorCode(t, {$project:{a:{$map:{input: "$notArray", as: "var", in: '$$var'}}}}, 16883);
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// parse errors (missing or extra fields)
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assertErrorCode(t, {$project:{a:{$map:{x:1, input: "$simple", as: "var", in: '$$var'}}}}, 16879);
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assertErrorCode(t, {$project:{a:{$map:{as: "var", in: '$$var'}}}}, 16880);
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assertErrorCode(t, {$project:{a:{$map:{input: "$simple", in: '$$var'}}}}, 16881);
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assertErrorCode(t, {$project:{a:{$map:{input: "$simple", as: "var"}}}}, 16882);
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