tStatCatcher Standard properties

Schema

A schema is a row description, it defines the fields to be processed and passed on to the next component. In this particular case, the schema is read-only, as this component gathers standard log information including:

Moment: Processing time and date

Pid: Process ID

Father_pid: Process ID of the father Job if applicable. If not applicable, Pid is duplicated.

Root_pid: Process ID of the root Job if applicable. If not applicable, pid of current Job is duplicated.

System_pid: Thread ID.

Project: Project name, which the Job belongs to.

Job: Name of the current Job

Job_repository_id: ID of the Job's .item file stored in the repository.

Job_version: Version of the current Job.

Context: Name of the current context

Origin: Name of the component if any

Message_type: Begin or End.

Message: Success or Failure.

Duration: Time for the execution of a Job or a component with the tStatCatcher Statistics check box selected.

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 the start component of a secondary Job which triggers automatically at the end of the main Job. The processing time is also displayed at the end of the log.