Property type

Either Built-in or Repository.

Built-in: No property data stored
centrally.

Repository: Select the repository
file where the properties are stored. The fields that follow are
completed automatically using the data retrieved.

Click this icon to open a connection wizard and store the Excel
file connection parameters you set in the component Basic settings view.

For more information about setting up and storing file connection
parameters, see
Talend Studio User
Guide.

File name

Name or path to the output file and/or the variable to be used.

For further information about how to define and use a variable in
a Job, see
Talend Studio

User Guide.

Attribute Define

Displays the schema you defined in the [Edit
schema] dialog box.

Column: Name of the
column.

Type: Data type.

Pattern: Enter the data model
(pattern), if necessary.

Relation

Enter the name of the relation.

Append

Select this check box to add the new rows at the end of the
file.

Schema and Edit
Schema

A schema is a row description, it defines the number of fields to be processed and
passed on to the next component. The schema is either Built-in or stored remotely in the
Repository.

Click Edit schema to make changes to the schema.
If the current schema is of the Repository type, three
options are available:

• View schema: choose this option to view the
  schema only.

• Change to built-in property: choose this
  option to change the schema to Built-in for
  local changes.

• Update repository connection: choose this
  option to change the schema stored in the repository and decide whether to propagate
  the changes to all the Jobs upon completion. If you just want to propagate the
  changes to the current Job, you can select No
  upon completion and choose this schema metadata again in the [Repository Content] window.

Built-in: You can create the
schema and store it locally for this component. Related topic: see

Talend Studio User
Guide.

Repository: You have already
created and stored the schema in the Repository. You can reuse it in
various projects and Job flowcharts. Related topic: see

Talend Studio User
Guide.

Create directory if not exists

This check box is selected by default. It creates a directory to
hold the output table if it does not exist.

Don’t generate empty file

Select this check box if you do not want to generate empty
files.

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at a
Job level as well as at each component level.

Global Variables

NB_LINE: the number of rows read by an input component or
transferred to an output component. 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 rule

Use this component along with a Row link to collect data from another component and
to re-write the data to an ARFF file.

Dynamic settings

Click the [+] button to add a row in the
table and fill the Code field with a context variable
to choose your HDFS connection dynamically from multiple connections planned in your
Job. This feature is useful when you need to access files in different HDFS systems or
different distributions, especially when you are working in an environment where you
cannot change your Job settings, for example, when your Job has to be deployed and
executed independent of
Talend Studio
.

The Dynamic settings table is
available only when the Use an existing
connection check box is selected in the Basic settings view. Once a dynamic parameter is
defined, the Component List box in the
Basic settings view becomes unusable.

For examples on using dynamic parameters, see Scenario: Reading data from databases through context-based dynamic connections and Scenario: Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic
settings and context variables, see
Talend Studio User Guide.

Connections

Outgoing links (from this component to another):

Row: Main.

Trigger: On Subjob Ok; On Subjob
Error; Run if.

Incoming links (from one component to this one):

Row: Main; Reject;
Iterate.

Trigger: On Subjob Ok; On Subjob
Error; Run if; On Component Ok; On Component Error; Synchronize;
Parallelize.

For further information regarding connections, see

Talend Studio User
Guide.

Limitation

Due to license incompatibility, one or more JARs required to use this component are not
provided. You can install the missing JARs for this particular component by clicking the
Install button on the Component tab view. You can also find out and add all missing JARs easily on the
Modules tab in the
Integration
perspective of your
studio. You can find more details about how to install external modules in Talend Help Center (https://help.talend.com).