tCouchDBConnection – Docs for ESB 5.x

Component Family

Big Data / CouchDB

Function

tCouchDBConnection opens a
connection to a CouchDB server.

Purpose

tCouchDBConnection enables the
reuse of the connection it creates to a CouchDB server, and allows
you to configure replication parameters if a replication is
triggered between the source database and the target
database.

Basic settings

DB Version

Select the CouchDB version that you are using.

Server

Type in the IP address or hostname of the CouchDB server.

Port

Type in the listening port number of the CouchDB server.

Database

Type in the database that you want to use.

Authentication

Required authentication

Select this check box to provide credentials for the CouchDB
authentication.

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.

Use trigger replication

Replicate target
database

Select the check box to set the replication in the table that
appears.

Target DB name: Specify the
target database to which the documents will be copied. It can be a
local database name or a remote database URL.

Continuous: Select this check box
to continue a replication upon the server restart.

Create target DB: Select this
check box to create the target database if it does not exist.

IS Canceled: Select this check
box to cancel the existing replication between the specified source
database and target database at the end of the Job.

Advanced settings

tStatCatcher Statistics

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

Global Variables

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 generally used with other CouchDB components,
particularly tCouchDBClose.

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

n/a