QueryEvaluator Class Reference


                      
                      
                      init()

Default initializer.

Swift

override public init()


                      
                      
                      applyFunction(call:context:)

Evaluate a query function call in the provided context.

Swift

open func applyFunction(call: QueryFunctionCall, context: StructureBase?) throws -> DataValue?

`call`	Query function call expression.
`context`	Structure (`ComplexValue` or `EntityValue`) providing the evaluation context.

Function result.


                      
                      
                      applyOperator(call:context:)

Evaluate a query operator call in the provided context.

Swift

open func applyOperator(call: QueryOperatorCall, context: StructureBase?) throws -> DataValue?

`call`	Query operator call expression.
`context`	Structure (`ComplexValue` or `EntityValue`) providing the evaluation context.

Operator result.


                      
                      
                      evaluate(_:context:)

Evaluate a query expression value in the provided context.

Swift

open func evaluate(_ value: DataValue?, context: StructureBase?) throws -> DataValue?

`value`	Query expression to be evaluated.
`context`	Structure (`ComplexValue` or `EntityValue`) providing the evaluation context.

Evaluated expression.


                      
                      
                      evaluateBoolean(_:context:)

Evaluate a boolean-typed query expression value in the provided context.

Swift

open func evaluateBoolean(_ value: DataValue?, context: StructureBase?) throws -> BooleanValue?

`value`	Query expression to be evaluated.
`context`	Structure (`ComplexValue` or `EntityValue`) providing the evaluation context.

Evaluated value, as type string.


                      
                      
                      evaluatePath(_:context:)

Evaluate a data path in the provided context.

Swift

open func evaluatePath(_ path: DataPath, context: StructureBase?) throws -> DataValue?

`path`	Data path.
`context`	Structure (`ComplexValue` or `EntityValue`) providing the evaluation context.

Evaluated path.


                      
                      
                      evaluateString(_:context:)

Evaluate a string-typed query expression value in the provided context.

Swift

open func evaluateString(_ value: DataValue?, context: StructureBase?) throws -> StringValue?

`value`	Query expression to be evaluated.
`context`	Structure (`ComplexValue` or `EntityValue`) providing the evaluation context.

Evaluated value, as type string.