August 17, 2023

tWebServiceInput – Docs for ESB 5.x

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tWebServiceInput

tWebServiceInput_icon32.png

tWebServiceInput Properties

Component family

Internet

 

Function

Calls the defined method from the invoked Web service, and returns
the class as defined, based on the given parameters.

Purpose

Invokes a Method through a Web service.

Note

To handle complex hierarchical data, use the advanced features
of tWebServiceInput and provide
Java code directly in the Code
field of the Advanced Settings
view.

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 where the properties are stored. The fields that follow are
completed automatically using the data retrieved.

 
Save_Icon.png

Click this icon to open a WSDL schema wizard and store your WSDL
connection in the Repository tree
view.

For more information about setting up and storing database
connection parameters, see Talend Studio User
Guide.

 

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.

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.

 

 

Built-in: You create the schema
and store it locally for the relevant component. Related topic: see
Talend Studio User
Guide.

 

 

Repository: You have already
created the schema and stored it in the Repository. You can reuse it
in various projects and job flowcharts. Related topic: see
Talend Studio User
Guide.

 

WSDL

Description of Web service bindings and configuration.
 

Need authentication / Username and
Password

Select this check box and:

-enter a username and a password in the corresponding fields if
this is necessary to access the service. Or,

-select the Windows
authentication check box and enter the windows domain
in the corresponding field if this is necessary to access the
service.

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 http proxy

Select this check box if you are using a proxy server and fill in
the necessary information.
 

Trust server with SSL

Select this check box to validate the server certificate to the
client via an SSL protocol and fill in the corresponding
fields:

TrustStore file: enter the path
(including filename) to the certificate TrustStore file that
contains the list of certificates that the client trusts.

TrustStore password: enter the
password used to check the integrity of the TrustStore data.

 

Time out (second)

Set a value in seconds for Web service connection time out.

 

Method Name

Enter the exact name of the Method to be invoked.

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

 

Parameters

Enter the parameters expected and the sought values to be
returned. Make sure that the parameters entered fully match the
names and the case of the parameters described in the method.
 

Advanced Use

Select this check box to display the fields dedicated for the
advanced use of
tWebServiceInput:

WSDL2java: click the three-dot
button to generate Talend routines that
hold the Java code necessary to connect and query the Web
service.

Code: replace the generated model
Java code with the code necessary to connect and query the specified
Web service using the code in the generated Talend routines.

Match Brackets: select the number
of brackets to be used to close the for loop based on
the number of open brackets.

 

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at a
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.

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

This component is generally used as a Start component. It must be
linked to 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

n/a

Scenario: Getting country names through a Web service

This scenario describes a two-component Job which uses a Web service method to obtain
the country name corresponding to a given country code and displays the output on the
Run console view.

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

  2. Link the two components using a Row >
    Main connection.

    Use_Case_tWebServiceInput1.png

  3. Double-click the tWebServiceInput component
    to open its Basic settings view.

    Use_Case_tWebServiceInput2.png

  4. Click the […] button next to Edit schema to open the [Schema] dialog box and define the schema for the response from
    the Web service.

    In this example, the schema is composed of only one column: Result.

    components-use_case-twebserviceinput-schema.png

  5. In the WSDL field, specify the WSDL URL of
    the Web service to be used, http://www.webservicex.net/country.asmx?WSDL in this
    example.

  6. If you are using a proxy server, select the Use http
    proxy     check box and enter the necessary connection
    information.

  7. In the Method name field, enter the method to
    be used. Note that the method name is case sensitive.

    In this example, we use the method GetCountryByCountryCode.

  8. In the Parameters area, click the plus
    [+] button to add a row to the table, then
    enter a country code, fr in this
    example..

  9. Then save your Job and press F6 to execute
    it.

    Use_Case_tWebServiceInput3.png

    The country information is returned from the Web service and displayed on the
    Run view.

Document get from Talend https://help.talend.com
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Docs 5.x
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