Interface with the Data Connector
The Teradata Access Module for JMS must provide a main function called PIDMMain(), which is called by the Data Connector to request I/O operations. This function contains two parameters:
void PIDMMain (pmiCmdBlock_t *Opts, void *OptParms)
The first parameter (Opts) specifies one of the access module functions in Table 14 on page 99. The second parameter (OptParms) contains context specific information for each of the functions specified in the table.
|
Access Module Function |
Description |
|
Access Module Initialization |
Initializes the Teradata Access Module for JMS and parses the initialization string. |
|
Access Module Identification |
Identifies the Teradata Access Module for JMS and version. |
|
File Open |
Opens the queue or topic connection. |
|
File Close |
Closes the queue or topic connection. |
|
File Read |
Gets and processes data messages from a specified queue or topic. |
|
File Write |
Puts and processes data messages to a specified queue or topic. |
|
File Get Position |
Returns the current position of a data file for checkpoint and restart purposes. |
|
File Set Position |
Restart at a given point of a data file for checkpoint and restart purposes. |
|
Get Attribute |
Returns an attribute to the Teradata load/export utilities. Primarily for exchanging information between the Teradata Access Module for JMS and the load/export utilities. |
|
Put Attribute |
Sends an attribute to the Teradata Access Module for JMS. This is for exchanging information. |
|
Shutdown |
Terminates the access module. |