lr_end_sub_transaction

Marks the end of a sub-transaction.

int lr_end_sub_transaction( char *sub_transaction, int status );

Arguments

The lr_end_sub_transaction function marks the end of a sub-transaction. To mark the beginning of the sub-transaction, use the lr_start_sub_transaction function. You insert these functions immediately before and after the sub-transaction steps.

Multiple sub-transactions can be nested within a parent transaction, but each lr_end_sub_transaction statement must match an lr_start_sub_transaction statement or it will be interpreted as an illegal command.

Return Values

This function returns 0 if it succeeds. It returns -1 if the transaction name is illegal or if there is no prior call to lr_start_transaction with a transaction of the same name.

Parameterization

You cannot use standard parameterization for any arguments in this function.

Example

In the following example, a sub-transaction called "electrical_purchases," performs purchases of six electrical items. If this sub-transaction is successful, the transaction status is recorded as LR_AUTO. The default value of LR_AUTO is LR_PASS. If the purchase is unsuccessful, the value is set as LR_FAIL.

 /* Notify that a transaction is starting */
lr_start_transaction("purchases");
 /* Breakdown the transaction into a smaller transaction */
lr_start_sub_transaction("electrical_purchases", "purchases");
status = purchase_electrical_items(6); /* call to Server API */

 /* End transaction with operation result - pass or fail */

if (status == 0)
    lr_end_sub_transaction("electrical_purchases", LR_AUTO);
else
    lr_end_sub_transaction("electrical_purchases", LR_FAIL);