August 17, 2023

tPaloDatabaseList – Docs for ESB 5.x

tPaloDatabaseList

tPaloDatabaseList_icon32.png

tPaloDatabaseList Properties

Component family

Business Intelligence/Cube OLAP/Palo

 

Function

This component retrieves a list of database details from the given
Palo server.

Purpose

This component lists database names, database types, number of
cubes, number of dimensions, database status and database id from a
given Palo server.

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.

Note

When a Job contains the parent Job and the child Job, Component
list
presents only the connection components in the same Job
level.

Connection configuration

Note

Unavailable when using an existing connection.

Host Name

Enter the host name or the IP address of the host server.

 

Server Port

Type in the listening port number of the Palo server.

 

Username and
Password

Enter the Palo 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.

Advanced settings

tStat
Catcher Statistics

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

Global Variables

NB_DATABASES: the number of databases. This is an After
variable and it returns an integer.

DATABASEID: the ID of the database. This is a Flow
variable and it returns a long.

DATABASENAME: the name of the database. 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.

Connections

Outgoing links (from this component to another):

Row: Main; Iterate

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

Incoming links (from one component to this one):

Row: Iterate

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

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

Usage

This component can be used as a start component. It requires an
output component.

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

The output schema is fixed and read-only.

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
.

Discovering the read-only output schema of tPaloDatabaseList

The below table presents information related to the read-only output schema of the
tPaloDatabaseList component.

Database

Type

Description

Database_id

long

Internal ID of the database.

Database_name

string

Name of the database.

Database_dimensions

int

Number of dimensions inside the database.

Database_cubes

int

Number of cubes inside the database.

Database_status

int

Status of the database.

0 = unloaded

1 = loaded

2 = changed

Database_types

int

Type of the database.

0 =normal

1 =system

3 =user info

Scenario: Retrieving detailed database information from a given Palo server

The Job in this scenario retrieves details of all of the databases from a given Palo
server.

Use_Case_tPaloDatabaseList.png

To replicate this scenario, proceed as follows:

Setting up the Job

  1. Drop tPaloDatabaseList and tLogRow from the component Palette onto the design workspace.

  2. Right-click tPaloDatabaseList to open the
    contextual menu.

  3. From this menu, select Row >
    Main to link the two components.

Configuring the tPaloDatabaseList component

  1. Double-click the tPaloDatabaseList
    component to open its Component
    view.

    Use_Case_tPaloDatabaseList1.png
  2. In the Host name field, type in the host
    name or the IP address of the host server, localhost
    for this example.

  3. In the Server Port field, type in the
    listening port number of the Palo server. In this scenario, it is
    7777.

  4. In the Username field and the Password field, type in the authentication
    information. In this example, both of them are
    admin.

Job execution

Press F6 to run the Job.

Details of all of the databases in the Palo server are retrieved and listed in the
console of the Run view.

Use_Case_tPaloDatabaseList2.png

For further information about the output schema, see Discovering the read-only output schema of tPaloDatabaseList.


Document get from Talend https://help.talend.com
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