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# lr_set_transaction_instance_status

Sets the status of a transaction instance.

    int lr_set_transaction_instance_status( int status, long trans_handle );

Alphabetical Listing - C Language Utility Functions

## Arguments

Name | Comments
--- | ---
status | One of the Transaction Status constants for pass, fail, or stop. The auto status is not applicable.
trans_handle | The handle to a transaction instance

The lr_set_transaction_instance_status function sets the status of the open transaction with the transaction handle trans_handle. The handle was returned by lr_start_transaction_instance.

This transaction's lr_end_transaction_instance statement must use automatic status assignment by passing a Transaction Status of auto as its status parameter.

A transaction's status is defined in the status parameter of lr_end_transaction_instance. If this status is LR_AUTO the value is automatically assigned. By default, this value is LR_PASS signifying a successful transaction. lr_set_transaction_instance_status changes this default value to status.

For more information on transaction instances, see lr_start_transaction_instance.

## Return Values

This function returns 0 on success and a negative value on failure.

## Parameterization

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

## Example

In the following example,the transaction instance "withdraw" measures the time it takes to perform a withdrawal from a bank server. When the server API call bank_withdraw() is completed, it returns a value to the status variable and the transaction instance is complete.

If the withdrawal fails, then lr_set_transaction_instance_status changes the default status for the transaction to LR_FAIL. The LR_FAIL status is automatically assigned to the LR_AUTO flag in the lr_end_transaction_instance statement because it uses the LR_AUTO flag.

    long id;
    int status;
    int amount_overdrawn = get_amount_overdrawn(); /* Call to server API */
    while (amount_overdrawn < LIMIT) {
         /* Notify that a transaction is starting */
        id = lr_start_transaction_instance("withdraw", 0);
        status = bank_withdraw(500); /* Call to server API */     /* Set transaction status with operation result - pass or fail */

         if (status != 0) /* Withdrawal failed */
              lr_set_transaction_instance_status(LR_FAIL, id);
              lr_end_transaction_instance(id, LR_AUTO);
              amount_overdrawn = get_amount_overdrawn();
    }

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