3.3 LANSA RDMLX Client

Three Built-In Functions are required for a LANSA RDMLX client to have complete interaction with the Java Service Manager services.

These Built-In Functions allow multiple concurrent connections in the same function.

3.3.1 JSMX_BEGIN	Initialize or re-initialize the service program internal state.
3.3.2 JSMX_OPEN	Open service
3.3.3 JSMX_COMMAND	Send command.
3.3.4 JSMX_CLOSE	Close service.
3.3.5 JSMX_END	End and re-initialize the service program internal state.

The LANSA developer only needs to understand how to use the commands offered by the JSM services.

The overall structure of the LANSA RDMLX functions will be the same.

The function will perform the following operations:

• BEGIN using the Built-In Functions.

• OPEN connection to the Java Service Manager.

• Issue a COMMAND to LOAD the service.

• Execute COMMANDs supported by the service.

• Issue a COMMAND to UNLOAD the service

• CLOSE connection to the Java Service Manager

• END using the Built-In Functions.

Overview of field and list exchange

Command     No fields No list Command SERVICE_EXCHANGE(*FIELD|*FIELDS)     Fields No list Command   #WRKLST No fields List Command #FLDLST   Specified fields No list Command #FLDLST #WRKLST Specified fields List Command SERVICE_EXCHANGE(*FIELD|*FIELDS)   #WRKLST Fields List Command SERVICE_EXCHANGE(*FIELD|*FIELDS) #FLDLST #WRKLST Specified fields List

Note: Specified fields takes precedence over SERVICE_EXCHANGE(*FIELD) or SERVICE_EXCHANGE(*FIELDS) keyword.