To Add a Service to Get Only User Names
In this procedure, you add a flow to filter users to get a list of user names. You set up the Transform Message to return the results you want.
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Copy and paste the get:/users:api-config flow to create another flow: Select the flow, and then Edit > Copy. Click a blank area of the canvas, and select Edit > Paste.
A copy of the flow appears at the bottom of the canvas.
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In the copy of the flow, select the HTTP listener component, and in the properties editor, change the Path from /placeholder to /placeholder/names.
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Drag a Transform Message component from the Mule palette to the right of the HTTP requester.
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In the properties editor, change the output code to specify the application/json mime type instead of application/java and add
payload.name:%dw 1.0 %output application/json --- payload.name
Next, test the API Implementation.