vibe-d ~master (2022-11-16T10:14:41Z)

MongoCollection.findOne

index vibe db mongo collection MongoCollection

Queries the collection for existing documents.

  1. auto findOne(T query, U returnFieldSelector, QueryFlags flags)
  2. auto findOne(T query, U projection, FindOptions options)
  3. auto findOne(T query, FindOptions options)
    struct MongoCollection
    auto
    findOne
    (
    R = Bson
    T
    )
    (
    T query
    ,
    FindOptions options = FindOptions.init
    )

Return Value

Type: auto

By default, a Bson value of the matching document is returned, or Bson(null) when no document matched. For types R that are not Bson, the returned value is either of type R, or of type $(Nullable!R), if R is not a reference/pointer type.

Throws

Exception if a DB communication error or a query error occurred.

See Also

- http://www.mongodb.org/display/DOCS/Querying - find

Meta

Source

See Implementation

index vibe db mongo collection MongoCollection aliasesconstructorsfunctionsproperties

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