RAD Studio VCL Reference
TMtsDataModule.AS_GetParams Method

Fetches current parameter values from the dataset bound to a specified provider.

function AS_GetParams(const ProviderName: WideString; var OwnerData: OleVariant): OleVariant; safecall;
__fastcall OleVariant AS_GetParams(const BSTR ProviderName, OleVariant OwnerData);

Use AS_GetParams to retrieve the current parameter values from the dataset associated with a provider. The ProviderName parameter specifies the name of the provider component whose dataset has the parameters. The OwnerData represents custom information that originates in a client dataset's BeforeGetParams event handler and returns information that is passed to the client dataset's AfterGetParams event handler. 

GetParams_resultAS_GetParams returns the parameters, encoded as a Variant array, or, if the provider does not support parameter fetching, GetParams_resultAS_GetParams returns a Null Variant. Use the UnpackParams procedure to convert parameter values returned by AS_GetParams to a TParams object. 

AS_GetParams should not be used to retrieve output parameters from stateless application servers, because parameter values may be changed by other applications. When writing a stateless application server, obtain output parameters using the AS_Execute method handler instead.

Note: Applications can only call the protected AS_GetParams method using the TRemoteDataModule interface.


Copyright(C) 2009 Embarcadero Technologies, Inc. All Rights Reserved.
What do you think about this topic? Send feedback!