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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: Aggregation Framework
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Labels:None
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ALL
The following non-string types are allowed by the $concat operator. They should instead trigger an exception to be thrown:
- Null
- undefined
- missing
- Timestamps
- Dates
- Code
The jstests used to verify this are:
c = db.s6570;
c.drop();
c.save({s: BinData(0,"e8MEnzZoFyMmD7WSHdNrFJyEk8M=")
, t: ObjectId()
, u: /abc.*def/i
, v: null
, w: undefined
, x: new Timestamp()
, y: new Date()
, z: function() { var j=3; } });
assert.throws(function() {c.aggregate({$project:{_id:0, num : { $concat:[1, "$v", 2, "$v"] }}}).result;}, null, "$concat - null");
assert.throws(function() {c.aggregate({$project:{_id:0, num : { $concat:[1, "$w", 2, "$w"] }}}).result;}, null, "$concat - undefined");
assert.throws(function() {c.aggregate({$project:{_id:0, num : { $concat:[1, "$x", 2, "$x"] }}}).result;}, null, "$concat - timestamp");
assert.throws(function() {c.aggregate({$project:{_id:0, num : { $concat:[1, "$y", 2, "$y"] }}}).result;}, null, "$concat - date");
assert.throws(function() {c.aggregate({$project:{_id:0, num : { $concat:[1, "$z", 2, "$z"] }}}).result;}, null, "$concat - function");
assert.throws(function() {c.aggregate({$project:{_id:0, num : { $concat:[1, "$missing", 2, "$missing"] }}}).result;}, null, "$concat - missing");
- is related to
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SERVER-30461 aggregation $concat expression is inconsistent in type checking with all other string expressions
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- Backlog
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