Details
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New Feature
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Status: Closed
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Major - P3
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Resolution: Done
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None
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None
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Fully Compatible
Description
Simple text indexing.
Initial version will be marked as experimental, so has to be turned on with a command line flag or at runtime.
db.adminCommand( { setParameter : "*", textSearchEnabled : true } );
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OR
./mongod --setParameter textSearchEnabled=true
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Only works via "text" command currently.
Features:
- parsing + stemming for latin languages
- multi-word scoring
- phrase matching
- word negation
- weights per field
- additional suffix index fields for coverings
- additional prefix index fields for partitioning
- specify language per document
Simple Example:
> db.foo.insert( { _id: 1 , desc: "the dog is running" } )
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> db.foo.insert( { _id: 2 , desc: "the cat is walking" } )
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> db.foo.ensureIndex( { "desc": "text" } )
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> db.foo.runCommand( "text", { search : "walk" } )
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{
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"queryDebugString" : "walk||||||",
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"language" : "english",
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"results" : [
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{
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"score" : 0.75,
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"obj" : {
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"_id" : 2,
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"desc" : "the cat is walking"
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}
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}
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],
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"stats" : {
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"nscanned" : 1,
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"nscannedObjects" : 0,
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"n" : 1,
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"timeMicros" : 330
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},
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"ok" : 1
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}
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Attachments
Issue Links
- is depended on by
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- Closed
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