tHSQLDbRow – Docs for ESB 5.x

Component family

Databases/HSQLDb

Function

tHSQLDbRow is the specific
component for this database query. It executes the SQL query stated
onto the specified database. The row suffix means the component
implements a flow in the job design although it doesn’t provide
output.

Purpose

Depending on the nature of the query and the database, tHSQLDbRow acts on the actual DB
structure or on the data (although without handling data). The
SQLBuilder tool helps you write easily your SQL statements.

Basic settings

Property 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: No property data stored
centrally.

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

Running Mode

Select on the list the Server Mode corresponding to your DB setup
among the four propositions :

HSQLDb Server, HSQLDb WebServer, HSQLDb In Process Persistent, HSQLDb In Memory.

Use TLS/SSL sockets

Select this check box to enable the secured mode if
required.

Host

Database server IP address

Port

Listening port number of DB server.

Database Alias

Name of the database

Username and
Password

DB user 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.

DB path

Specify the directory to the database you want to connect to. This
field is available only to the HSQLDb In
Process Persistent running mode.

Database

Enter the database name that you want to connect to. This field is
available only to the HSQLDb In Process
Persistent running mode and the HSQLDb In Memory running mode.

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. Related topic: see
Talend Studio User
Guide.

Repository: The schema already
exists and is stored in the Repository, hence can be reused. Related
topic: 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:

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.

Query

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

Die on error

This check box is selected by default. Clear the check box to skip
the row on error and complete the process for error-free rows. If
needed, you can retrieve the rows on error via a Row > Rejects link.

Advanced settings

Additional JDBC parameters

Specify additional connection properties for the DB connection you
are creating. When the running mode is HSQLDb
In Process Persistent , you can set the connection
property ifexists=true to allow connection to an
existing database only and avoid creating a new database.

Propagate QUERY’s recordset

Select this check box to insert the result of the query into a
COLUMN of the current flow. Select this column from the use column list.

Commit every

Number of rows to be completed before committing batches of rows
together into the DB. This option ensures transaction quality (but
not rollback) and above all better performance on executions.

tStat
Catcher Statistics

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

Usage

This component offers the flexibility of the DB query and covers
all possible SQL queries.

Global Variables

QUERY: Indicates the query to be
processed. This is a Flow variable and it returns a string.

For further information about variables, see Talend Studio User
Guide.

Connections

Outgoing links (from this component to another):

Row: Main; Reject; Iterate

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

Incoming links (from one component to this one):

Row: Main; Iterate

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

For further information regarding connections, see Talend Studio User
Guide.

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.

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. For details, see https://help.talend.com/display/KB/How+to+install+external+modules+in+the+Talend+products
or the section describing how to configure the Studio in the Talend Installation and Upgrade
Guide.