RPC HELP TParamRecord PType Property

PType Property Example

Applies to    TParamRecord class Declaration property PType: TParamType; (PType is a property of the TParamRecord used in the Param property.) Description The PType design-time property determines how the parameter will be interpreted and handled by the Broker.

Value -- Definition For instance, if you need to pass an empty string to the remote procedure call (RPC), the Value property should be set to " (i.e., null) and the PType to literal. Using reference, a programmer can pass an M variable (e.g., DUZ) without even knowing its value. However, If the M variable being referenced is not defined on the VistA M Server, a run-time error will occur. When passing a list to an RPC: set the PType to list, populate the Mult property, and don't put anything into the Value property (in this case, Value is ignored). NOTE: For a demonstration using PType, please run the BrokerExample.EXE located in the ..\BDK32\Samples\BrokerEx directory.
 * literal -- The VistA M Server receives the contents of the corresponding Value property as one string or one number.
 * reference -- The VistA M Server receives the contents of the corresponding Value property as a name of a variable defined on the server. Using indirection, the Broker on the server will resolve this parameter before handing it off to the application.
 * list -- This value is used whenever an application wants to send a list of values to the VistA M Server. In this case, the contents of the corresponding Mult property is sent, while the Value property is ignored.
 * undefined -- The Broker uses this value internally. It should not be used by an application.