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.TH "MONGOC_MATCHER" "3" "Oct 20, 2022" "1.23.1" "libmongoc"
.SH NAME
mongoc_matcher \- Client Side Document Matching
.SH BASIC DOCUMENT MATCHING (DEPRECATED)
.sp
\fBWARNING:\fP
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.INDENT 3.5
This feature will be removed in version 2.0.
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.UNINDENT
.sp
The MongoDB C driver supports matching a subset of the MongoDB query specification on the client.
.sp
Currently, basic numeric, string, subdocument, and array equality, \fB$gt\fP, \fB$gte\fP, \fB$lt\fP, \fB$lte\fP, \fB$in\fP, \fB$nin\fP, \fB$ne\fP, \fB$exists\fP, \fB$type\fP, \fB$and\fP, and \fB$or\fP are supported. As this is not the same implementation as the MongoDB server, some inconsistencies may occur. Please file a bug if you find such a case.
.sp
To test this, perform a \fBmongodump\fP of a single collection and pipe it to the program.
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.nf
.ft C
$ echo "db.test.insert({hello:\(aqworld\(aq})" | mongo
connecting to: test
WriteResult({ "nInserted" : 1 })
bye

$ mongodump \-d test \-c test \-o \- | filter\-bsondump
{ "_id" : { "$oid" : "537afac9a70e5b4d556153bc" }, "hello" : "world" }
.ft P
.fi
.UNINDENT
.UNINDENT
.SH AUTHOR
MongoDB, Inc
.SH COPYRIGHT
2017-present, MongoDB, Inc
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