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javaxmlxml-namespacesibm-integration-bus

How to set xmlns attribute value in Java Compute Node?

I was trying to propagate the following xml message to the File Output Node in IBM Integration Bus. 

<Resto xmlns = 'https://stackoverflow.com'><Location network_id="5dfweg68h"><Category>Continental</Category></Location></Resto>

Following was my associated Java code to construct the above xml message:

MbElement xmlBody = outMessage.getRootElement().createElementAsLastChild(MbXMLNSC.PARSER_NAME);
MbElement xmlParent = xmlBody.createElementAsLastChild(MbElement.TYPE_NAME, "Resto", null);
xmlParent.createElementAsLastChild(MbXMLNSC.ATTRIBUTE, "xmlns", "https://stackoverflow.com");

MbElement locationParser = xmlParent.createElementAsLastChild(MbElement.TYPE_NAME, "Location", null);
locationParser.createElementAsLastChild(MbXMLNSC.ATTRIBUTE, "network_id", "5dfweg68h");
locationParser.createElementAsLastChild(MbElement.TYPE_NAME_VALUE,"Category","Continental");

On debugging my application, I got XML write errors. I pondered a bit for the necessary solution, and found that adding namespace prefix would solve the problem. Can't it be done without the addition of a prefix? If no, can anyone guide me, in assigning the necessary value by suggesting the necessary changes to be done in Java compute node?

Note: The string assigned to xmlns should be within single quotes in the xml message.

Solution

  • Use constant MbXMLNSC.NAMESPACE_DECLARATION to declare the namespace:

    MbElement xmlBody = outMessage.getRootElement().createElementAsLastChild(MbXMLNSC.PARSER_NAME);
MbElement xmlParent = xmlBody.createElementAsLastChild(MbElement.TYPE_NAME, "Resto", null);
xmlParent.createElementAsFirstChild(MbXMLNSC.NAMESPACE_DECLARATION, "xmlns", "https://stackoverflow.com");

    If your XSD defines that the XML elements are qualified, you have to set the namespace explicitly. Examples:

    xmlParent.setNamespace("https://stackoverflow.com");
locationParser.setNamespace("https://stackoverflow.com");
locationParser.createElementAsLastChild(MbElement.TYPE_NAME_VALUE,
     "Category", "Continental").setNamespace("https://stackoverflow.com");