Web Services Guide

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How to Receive Parsed Data from the Web Service

You can parse a message that you receive from the web service. When you parse the message, the REST Web Service Consume transformation receives data according to the structure that you specify for the response message in the method output definition.

For example, you might want to parse the following JSON response message:

{"name":"infa","message":"hello"}

To parse this response message, complete the following steps when you configure the transformation:

In the Developer tool mapping editor, scroll down in the mapping palette to locate the REST Web Service Consumer transformation and drag it to the mapping.

The

New REST Web Service Consumer Transformation

wizard appears.

This image shows the wizard for the REST Web Service Consumer transformation. In this dialog box, you can configure the transformation name, the location, and the HTTP method.

Enter a name for the transformation.

Next to

HTTP Method

, select

Get

When you use the Get method, you do not configure an input mapping.

Click

The wizard displays a message that input is not applicable when using the Get method.

Click

Select

Create as empty

Next to

Show

, select

Output mapping

Design the method output definition based on the response message that you expect to receive.

The following image shows how the method output definition might appear:

This image shows a sample method output definition. In this example, the parent element is xmlRoot. The child elements are name and message.

Although the transformation receives a JSON response from the web service, the Data Integration Service automatically adds a root element named xmlRoot to the JSON response. When you configure the method output definition for a JSON response, configure the same root element xmlRoot.

Select

Output mapping

Configure the output mapping by dragging ports from the

Method output definition

area to the

Ports

area.

The following image shows an example of the output mapping:

Click

Finish

Select the transformation and navigate to the

Advanced

tab.

Configure the

Output Format

with

JSON

The following image shows how the transformation might appear when it is integrated in a mapping:

This image shows a sample mapping in the Developer tool. The mapping contains a Read transformation, a REST Web Service Consumer transformation, and a Write transformation. The ports in the Read transformation are linked as input ports in the downstream REST Web Service Consumer transformation. To parse the response that the transformation receives, the name output port in the REST Web Service Consumer transformation is linked to the downstream Write transformation.

The following image shows the response that might appear when you run the mapping:

This image shows a sample response that you might receive. In this example, the response shows "infa" in the name port and "hello" in the message port.

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Web Services Guide

Web Services Guide

How to Receive Parsed Data from the Web Service

How to Receive Parsed Data from the Web Service