Schema and Edit
Schema

A schema is a row description. It defines the number of fields (columns) 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 create and store the
schema locally for this component only. Related topic: see
Talend Studio

User Guide.

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

User Guide.

Mode

Select the mode that you want to use to generate the data
stream.

• Use Inline Content: enter the
  data that you want to generate.

• Use context variable: enter
  the name of variable to be used to provide data. This variable
  must have been defined in the Contexts tab of the current Job.

  The syntax to call a variable is context.VariableName.

In either mode, the data you provide must use the separators you have
defined in the Row separator, Field Separator and Micro batch separator fields.

Usage rule

This component is used as a start component and requires an output link.

This component is added automatically to a test case being created to provide input
data.

Spark Connection

This connection is effective on a per-Job basis.