tSAPHanaInput – Docs for ESB 5.x

Component family

Databases / SAP Hana

Function

tSAPHanaInput reads a database
and extracts fields based on a query.

Purpose

tSAPHanaInput executes a database
query with a defined command which must correspond to the schema
definition. Then it passes on rows to the next component via a
Main row link.

Basic settings

Use an existing connection

Select this check box and in the Component List click the
relevant connection component to reuse the connection details you already defined.

DB Version

Select the SAP Hana Database (HDB) version you are using.

Host

Database server IP address.

Port

Listening port number of database server.

Schema

Name of the database schema.

Username and Password

Database authentication data.

To enter the password, click the […] button next to the
password field, and then in the pop-up dialog box enter the password between double quotes
and click OK to save the settings.

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.

Since version 5.6, both the Built-In mode and the Repository mode are
available in any of the Talend solutions.

Built-in: The schema is created
and stored locally for this component only. For more information,
see Talend Studio User
Guide.

Repository: The schema already
exists and is stored in the Repository, hence can be reused. For
more information, see Talend Studio User Guide.

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

Table Name

Name of the table to be written. Note that only one table can be
written at a time.

Query Type

Either Built-in or Repository.

Since version 5.6, both the Built-In mode and the Repository mode are
available in any of the Talend solutions.

Built-in: Fill in manually the
query statement or build it graphically using SQLBuilder.

Repository: Select the relevant
query stored in the Repository. The Query field gets accordingly
filled in.

Guess Query

Click the Guess Query button to
generate the query which corresponds to your table schema in the
Query field.

Guess schema

Click the Guess schema button to
retrieve the table schema.

Query

Enter your database query paying particularly attention to
properly sequence the fields in order to match the schema
definition.

Advanced settings

Additional JDBC Parameters

Specify additional connection properties in the database
connection you are creating. This option is not available if you
have selected Use an existing
connection check box in the Basic settings.

Trim all the String/Char columns

Select this check box to remove leading and trailing whitespaces
from all the String/Char columns.

Trim column

Remove leading and trailing whitespaces from defined columns.

tStatCatcher Statistics

Select this check box to collect log data at the component
level.

Dynamic settings

Click the [+] button to add a row in the table and fill
the Code field with a context variable to choose your
database connection dynamically from multiple connections planned in your Job. This feature
is useful when you need to access database tables having the same data structure but in
different databases, 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 more information on Dynamic settings and context
variables, see Talend Studio User Guide.

Global Variables

NB_LINE: the number of rows processed. This is an After
variable and it returns an integer.

QUERY: the SQL query statement being processed. This is a
Flow variable and it returns a string.

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 is standalone as it includes the SAP Hana engine.
This is a startable component that can initiate a data flow
processing.

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.