MapExp.GetByKey Method

Create expression that selects map item identified by key and returns selected data specified by returnType.

Definition

Namespace: Aerospike.Client
Assembly: AerospikeClient (in AerospikeClient.dll) Version: 8.0.1+e35566e493546c0887ebb841c8e2a2c6a7cbde18
C#
public static Exp GetByKey(
	MapReturnType returnType,
	Exp.Type valueType,
	Exp key,
	Exp bin,
	params CTX[] ctx
)

Parameters

returnType  MapReturnType
metadata attributes to return. See MapReturnType
valueType  Exp.Type
expected type of return value
key  Exp
map key expression
bin  Exp
bin or map value expression
ctx  CTX[]
optional context path for nested CDT

Return Value

Exp

Example

C#
// Map bin "a" contains key "B"
Exp.GT(
  MapExp.GetByKey(MapReturnType.COUNT, Type.INT, Exp.Val("B"), Exp.MapBin("a")),
  Exp.Val(0));

See Also