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tNeo4jConnection Standard properties

These properties are used to configure tNeo4jConnection running in the Standard Job framework.

The Standard tNeo4jConnection component belongs to the Big Data and the Databases NoSQL families.

The component in this framework is available in all Talend products with Big Data and in Talend Data Fabric.

Basic settings

DB version

Select the Neo4j version you are using.

When you use V3.2.X:

  • If you work with a remote server, only tNeo4jInput and tNeo4jRow can reuse the connection defined in tNeo4jConnection because these components work with Neo4j remote servers only.

  • If you work with a local server, only tNeo4jBatchOutput, tNeo4jBatchSchema and tNeo4jBatchOutputRelationship can reuse the connection defined in tNeo4jConnection because these components work with Neo4j local servers only.

Do not use a 2.X.X version and a 3.X.X version in the same Job. Otherwise, class conflict issues occur.

Neo4j version 2.X.X is compatible only with Java 7 or higher but it offers support of advanced features such as node labels.

Upon selecting a database version, you will be prompted to install the corresponding database driver JAR files if not yet installed. For details, see Installing external modules. You can find more details about how to install external modules in Talend Help Center (https://help.talend.com).

Remote server

Select this check box if you use a Neo4j remote server, and specify the root URL in the Server URL field.

  • Set username: this check box is available when you have selected the Use a remote server check box and the Neo4j version you are using is earlier than 2.2. If the remote Neo4j server you want to connect to does not require user credentials, leave it clear.

  • Username and Password: enter the authentication information to connect to the remote Neo4j server to be used. Since Neo4j 2.2, user credentials are always required.

Server URL

Specify the root URL.

This field is available only if the Use a remote server check box is selected.

Read only

Select this check box if you want to use the embedded database in read only mode. It's useful if an application is already dedicated with the database.

This check box is available only when you are using a 2.X.X version.

Information noteWarning:

Do not use this mode when you have any output Neo4j component in your Job such as tNeo4jOutput, tNeo4jOutputRelationship or tNeo4jRow.

Database path

If you use Neo4j in embedded mode, specify the path of data file.

This field is available only if the Use a remote server check box is not selected.

Advanced settings

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

Global Variables

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

Usage rule

This component is generally used with other Neo4j components, particularly tNeo4jClose.
Limitation n/a

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