jkesselm 01/11/29 11:41:51
Modified: java/src/org/apache/xml/dtm/ref DTMNodeProxy.java
Log:
Implement getDocumentElement. If the DTM doesn't represent a
wellformed Document, this call is undefined and throws an exception...
which isn't DOMlike but that's a non-DOMlike situation.
Revision Changes Path
1.12 +37 -3 xml-xalan/java/src/org/apache/xml/dtm/ref/DTMNodeProxy.java
Index: DTMNodeProxy.java
===================================================================
RCS file: /home/cvs/xml-xalan/java/src/org/apache/xml/dtm/ref/DTMNodeProxy.java,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -r1.11 -r1.12
--- DTMNodeProxy.java 2001/11/29 19:21:02 1.11
+++ DTMNodeProxy.java 2001/11/29 19:41:51 1.12
@@ -475,7 +475,8 @@
*/
public final Document getOwnerDocument()
{
- return new DTMNodeProxy(dtm, dtm.getDocument());
+ return (Document)(dtm.getNode(dtm.getDocument()));
+ //return new DTMNodeProxy(dtm, dtm.getDocument());
}
/**
@@ -582,14 +583,47 @@
/** This is a bit of a problem in DTM, since a DTM may be a Document
* Fragment and hence not have a clear-cut Document Element. We can
- * make it work in some cases but would that be confusing for others?
+ * make it work in the well-formed cases but would that be confusing for others?
*
* @return
* @see org.w3c.dom.Document
*/
public final Element getDocumentElement()
{
- throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
+ int dochandle=dtm.getDocument();
+ int elementhandle=dtm.NULL;
+ for(int kidhandle=dtm.getFirstChild(dochandle);
+ kidhandle!=dtm.NULL;
+ kidhandle=dtm.getNextSibling(kidhandle))
+ {
+ switch(dtm.getNodeType(kidhandle))
+ {
+ case Node.ELEMENT_NODE:
+ if(elementhandle!=dtm.NULL)
+ {
+ elementhandle=dtm.NULL; // More than one;
ill-formed.
+ kidhandle=dtm.getLastChild(dochandle); // End
loop
+ }
+ else
+ elementhandle=kidhandle;
+ break;
+
+ // These are harmless; document is still wellformed
+ case Node.COMMENT_NODE:
+ case Node.PROCESSING_INSTRUCTION_NODE:
+ case Node.DOCUMENT_TYPE_NODE:
+ break;
+
+ default:
+ elementhandle=dtm.NULL; // ill-formed
+ kidhandle=dtm.getLastChild(dochandle); // End loop
+ break;
+ }
+ }
+ if(elementhandle==dtm.NULL)
+ throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
+ else
+ return (Element)(dtm.getNode(elementhandle));
}
/**
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