Component List

Select the component used in your Job.

Backout messages to backout queue
(WebsphereMQ)

Select this check box to backout the messages to the backout queue
defined in the Websphere MQ manager when the backout count reaches
the configured threshold which is a property of the queue in the
Websphere MQ server.

• If a tMomConnection
  component is selected from Component
  List, the messages processed by all tMomInput components that reuses
  the connection created by the selected tMomConnection component will be
  backouted.

• If a tMomInput component
  is selected from Component
  List and the Use
  existing connection check box in the
  Basic settings view of
  the tMomInput component is
  cleared, the messages processed by the selected tMomInput component will be
  backouted.

• If a tMomInput component
  is selected from Component
  List and the Use
  existing connection check box in the
  Basic settings view of
  the tMomInput component is
  selected, the messages processed by all tMomInput components that reuses
  the same connection the selected tMomInput component reused will be
  backouted.

• If a tMomOutput component
  is selected from Component
  List and the Use
  existing connection check box in the
  Basic settings view of
  the tMomOutput component is
  cleared, no messages will be backouted.

• If a tMomOutput component
  is selected from Component
  List and the Use
  existing connection check box in the
  Basic settings view of
  the tMomOutput component is
  selected, the messages processed by all tMomInput components that reuses
  the same connection the selected tMomOutput component reused will be
  backouted.

Note that this check box works only when the Commit (delete message after read from the queue),
Backout messages to input
queue, Backout messages to backout
queue (when backoutCount of message reach the threshold
value), and Browse
message check boxes of all tMomInput components in the same Job are
cleared.

Close Connection

Clear this check box to continue to use the selected connection
once the component has performed its task.

tStatCatcher Statistics

Select this check box to collect log data at the component
level.

Global Variables

ERROR_MESSAGE: the error message generated by the
component when an error occurs. This is an After variable and it returns a string. This
variable functions only if the Die on error check box is
cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable
functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl +
Space to access the variable list and choose the variable to use from it.

For further information about variables, see
Talend Studio

User Guide.

Usage rule

This component is more commonly used with other tMom* components,
especially with the tMomConnection
and tMomCommit components.