DOMSource and DOMResult

package javax.xml.transform.dom;

public class DOMSource implements Source {

  public static final String FEATURE =
    "http://javax.xml.transform.dom.DOMSource/feature";

  public DOMSource() {}
  public DOMSource(Node node);
  public DOMSource(Node node, String systemID);

  public void    setNode(Node node);
  public Node   getNode();
  public void    setSystemId(String baseID);
  public String getSystemId();

}

In theory, you should be able to convert any DOM Node object into a DOMSource and transform it. In practice, only transforming document nodes is truly reliable. (It’s not even clear that the XSLT processing model applies to anything that isn’t a complete document.) In my tests, Xalan-J could transform all the nodes I threw at it. However, Saxon could only transform Document objects and Element objects that were part of a document tree.

package javax.xml.transform.dom;

public class DOMResult implements Result {

  public static final String FEATURE =
  "http://javax.xml.transform.dom.DOMResult/feature";

  public DOMResult();
  public DOMResult(Node node);
  public DOMResult(Node node, String systemID);
  
  public void setNode(Node node);
  public Node getNode();
  public void setSystemId(String systemId);
  public String getSystemId();
  
}

If you specify a Node for the result, either via the constructor or by calling setNode(), then the output of the transform will be appended to that node’s children. Otherwise, the transform output will be appended to a new Document or DocumentFragment Node. The getNode() method returns this Node.