tWarn - 6.3

Talend Open Studio for Big Data Components Reference Guide

EnrichVersion
6.3
EnrichProdName
Talend Open Studio for Big Data
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

Both tDie and tWarn components are closely related to the tLogCatcher component.They generally make sense when used alongside a tLogCatcher in order for the log data collected to be encapsulated and passed on to the output defined.

Function

This component provides a priority-rated message to the next component. It does not stop your Job in case of error. If you want to kill a Job in case of error, see tDie.

Purpose

Triggers a warning often caught by the tLogCatcher component for exhaustive log.

tWarn Properties

Component family

Logs & Errors

 

Basic settings

Warn message

Type in your warning message.

 

Code

Define the code level.

 

Priority

Enter the priority level as an integer.

Global Variables

WARN_MESSAGES: the warning message. This is an After variable and it returns a string.

WARN_CODE: the code level of the warning message. This is an After variable and it returns an integer.

WARN_PRIORITY: the priority level of the warning message. This is an After variable and it returns an integer.

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

Cannot be used as a start component. If an output component is connected to it, an input component should be preceding it.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Limitation

n/a

Related scenarios

For use cases in relation with tWarn, see tLogCatcher scenarios: