tLibraryLoad – Docs for ESB 5.x

Component Family

Custom Code

Function

tLibraryLoad allows you to import
a library.

Purpose

tLibraryLoad allows you to load
useable Java libraries in a Job.

Basic settings

Library

Select the library you want to import from the list, or click on
the […] button to browse to the
library in your directory.

Advanced settings

Dynamic Libs

Lib Paths: Enter the access path
to your library, between double quotation marks.

Import

Enter the Java code required to import, if required, the external
library used in the code editing field of the Basic settings tab of the components such as
tJava, tJavaFlex or tJavaMR in a Map/Reduce Job.

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

This component may be used alone, although it is more logical to
use it as part of a Job.

Usage in Map/Reduce Jobs

If you have subscribed to one of the Talend solutions with Big Data, you can also
use this component as a Map/Reduce component. In a Talend Map/Reduce Job, this
component is used standalone. It generates native Map/Reduce code that can be executed
directly in Hadoop.

You need to use the Hadoop Configuration tab in the
Run view to define the connection to a given Hadoop
distribution for the whole Job.

This connection is effective on a per-Job basis.

For further information about a Talend Map/Reduce Job, see the sections
describing how to create, convert and configure a Talend Map/Reduce Job of the
Talend Big Data Getting Started Guide.

Note that in this documentation, unless otherwise explicitly stated, a scenario presents
only Standard Jobs, that is to say traditional Talend data
integration Jobs, and non Map/Reduce Jobs.

Log4j

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