TTMSMCPValueHelper.FromJSON Method

Converts an incoming JSON argument into a typed value according to the declared property type. The returned value holds a native type for scalars and arrays (for example Integer, Double, Boolean, TDateTime or a dynamic array), while object and raw JSON kinds keep a reference to the original JSON value.

API unit family: TMS.MCP.Helpers Declaring type: TTMSMCPValueHelper

Syntax

class function FromJSON(const JsonValue: TJSONValue; const ExpectedType: TTMSMCPToolPropertyType): TValue; static;

Parameters

Name	Description
JsonValue	The JSON value taken from the call parameters. Ownership stays with the caller; object and raw JSON kinds are referenced, not copied.
ExpectedType	The declared type of the property the value belongs to; it selects the conversion that is applied.

Returns

The converted value.

Exceptions

Exception	Description
Exception	Raised when the JSON value does not match the expected type, for example a non-numeric value for an integer property or a non-array value for an array property.