tXMLRPCInput Standard properties - 7.3

Schema and Edit Schema

A schema is a row description, it defines the number of fields that will be processed and passed on to the next component. The schema is either Built-in or remote in the Repository.

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

• View schema: choose this option to view the schema only.

• Change to built-in property: choose this option to change the schema to Built-in for local changes.

• Update repository connection: choose this option to change the schema stored in the repository and decide whether to propagate the changes to all the Jobs upon completion. If you just want to propagate the changes to the current Job, you can select No upon completion and choose this schema metadata again in the Repository Content window.

In the RPC context, the schema corresponds to the output parameters. If two parameters are meant to be returned, then the schema should contain two columns.

Server URL

URL of the RPC service to be accessed

Need authentication / Username and Password

Select this check box and fill in a username and password if required to access the service.

Method

Enter the exact name of the Method to be invoked.

The Method name MUST match the corresponding method described in the RPC Service. The Method name is also case-sensitive.

Parameters

Enter the parameters expected by the method as input parameters.

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.

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

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 rule

This component is generally used as a Start component. It requires to be linked to an output component.