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Type:
Improvement
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Resolution: Duplicate
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Priority:
Trivial - P5
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None
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Affects Version/s: 2.2.0
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Component/s: Aggregation Framework
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Pre requisites:
The regex returns a boolean
Should be trivial to make it work as the expression in a $cond while projecting
Example:
Schema:
{
'_id': IDObject,
'Path': string,
'...': a bunch of other fields
}
Aggregation command:
{
'$match': { ... }
},
{
'$project': {
'_id': '$_id',
'EndsWithString': {
'$cond': [
{'$Path': {'$regex': 'String$'}}, # This is the same notation that for find or find_one. It should return true/false
true,
false
]
}
}
}
PS: I very influenced by the pymongo driver so excuse me if I mix console and python notation. Trying to ilustrate the point
- duplicates
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SERVER-11947 Add a regex expression to the aggregation language
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- Closed
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- related to
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- Closed
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