Scenario 3: Mapping data using a filter - 6.3

Talend Open Studio for Big Data Components Reference Guide

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Based on Scenario 2: Launching a lookup flow to join complementary data, this scenario presents how to apply filter condition(s) to select the data of interest using tXMLMap.

  1. In your Studio, open the Job used in the previous scenario to display it in the design workspace.

  2. Double-click the tXMLMap component to open its Map Editor.

  3. On the top of the Customer output table, click the button to open the filter area.

  4. Drop the idState node in the main input table to the filter area. The XPath [row1.Customer:/Customers/Customer/Address/idState] of the idState node is added automatically to this filter area.

    Enter == 2 after the XPath of the idState node, and the complete filter condition becomes [row1.Customer:/Customers/Customer/Address/idState] == 2. This means only the customer data with the state id of 2 will be passed to the output flow.

  5. Click OK to validate the changes and close the map editor.

  6. Press Ctrl + S to save the Job and then F6 to run the Job.

    As shown above, the customers Griffith Paving and Sealcoatin and Glenn Oaks Office Supplies, whose state id is 2 are displayed on the console.