Custom action with XML type input and output parameter.

Question

Hi,
I want to develop custom action with xml type input and/or output parameter.
Is there sample code for java side. How is the definition of input and/or output parameter and set/get methods?
does it need special .jar file to develop custom action like this?
Thanks.

Answer 1

Cemil - yes, you can use XML data types.  Use the class
com.sap.lhcommon.xml.XMLDataType
for your parameter type.  Here is a snippet from a custom action we use to log XML (instead of just returning the #text node like the default logger does):
public class XMLLogger extends ActionReflectionBase
    private String source;
    private String eventType;
    private String textMessage;
    private XMLDataType xmlMessage;
    public XMLLogger()
        log = new Logger("UserLog");
        source = DEFAULT_SOURCE;
        eventType = TYPE_INFO;
        textMessage = "";
        xmlMessage = new XMLDataType();
    public XMLDataType getXmlMessage()
        return xmlMessage;
    public void setXmlMessage(XMLDataType xmlMessage)
        this.xmlMessage = xmlMessage;
    public void Invoke(Transaction transaction, ILog ilog)
        StringBuffer sb = new StringBuffer();
        sb.append('[');
        sb.append(source);
        sb.append("] ");
        sb.append(textMessage);
        sb.append(XMLUtils.convertXmlToString(xmlMessage));
XMLUtils is a helper class we wrote - it's just a bunch of standard Java XML boilerplate code.  The important part you need to know is XMLDataType.getDocument() will return an org.w3c.dom.Document.
I hope that was enough information to help.
-tim