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Configuring the XML transformation

Procedure

  1. Double-click the tXMLMap component to open its Map Editor.
    Note that the input area is already filled with the default basic XML structure and the top table is the main input table.
  2. In the row1 input table, right-click the Customer node and from the contextual menu select Import From File. In the pop-up dialog box, browse to the XML source file to import therefrom the XML tree structure used by the data to be received by tXMLMap. In this scenario, the XML source file is Customer.xml, which is the input data to the tFileInputXML component labelled Customers.
    Information noteNote:

    You can also import an XML tree from an XSD file. When importing either an input or an output XML tree structure from an XSD file, you can choose an element as the root of your XML tree. For more information on importing an XML tree structure from an XSD file, see Talend Studio User Guide.

  3. In the imported XML tree, right-click the Customer node and from the contextual menu select As loop element to set it as the loop element.
  4. On the lower part of this map editor, click the Schema editor tab to display the corresponding view. Then on the right side of this view, add one column Customer_States of Document type to the Customer schema table. The corresponding XML root is added automatically to the Customer output table on the top right side which represents the output flow.
  5. In the Customer output table, right-click the Customer_States node and from the contextual menu select Import From File. In the pop-up dialog box, browse to the XML file from which the XML tree structure is imported. In this scenario, it is Customer_State.xml.
  6. Right-click the customer node and from the contextual menu select As loop element to set it as the loop element.
  7. In the row1 input table, click the id node and drop it to the Expression column in the row of the @id node in the Customer output table.
    Do the same to map CustomerName to CustomerName, CustomerAddress to CustomerAddress, and idState to idState from the input table to the output table.
    Information noteNote:

    In some circumstances, you may have to keep empty elements in your output XML tree. If so, you can use tXMLMap to manage them. For further information about how to manage empty elements using tXMLMap, see Talend Studio User Guide.

  8. On the top of the Customer output table, click the wrench icon and set the value of the All in one property to true to generate a single XML flow. For further information about the All in one feature, see Talend Studio User Guide.
  9. Click OK to validate the changes and close the Map Editor.
    Information noteNote:

    If you close the Map Editor without having set the required loop elements as described earlier in this scenario, the root element will be automatically set as the loop element.

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