- package org.apache.xpath.objects;
-
- import org.apache.xml.dtm.*;
- import org.apache.xpath.XPathContext;
- import org.apache.xpath.NodeSetDTM;
- import org.apache.xpath.axes.OneStepIterator;
-
-
- public class XObjectFactory
- {
-
- /**
- * Create the right XObject based on the type of the object passed. This
- * function can not make an XObject that exposes DOM Nodes, NodeLists, and
- * NodeIterators to the XSLT stylesheet as node-sets.
- *
- * @param val The java object which this object will wrap.
- *
- * @return the right XObject based on the type of the object passed.
- */
- static public XObject create(Object val)
- {
-
- XObject result;
-
- if (val instanceof XObject)
- {
- result = (XObject) val;
- }
- else if (val instanceof String)
- {
- result = new XString((String) val);
- }
- else if (val instanceof Boolean)
- {
- result = new XBoolean((Boolean)val);
- }
- else if (val instanceof Double)
- {
- result = new XNumber(((Double) val));
- }
- else
- {
- result = new XObject(val);
- }
-
- return result;
- }
-
- /**
- * Create the right XObject based on the type of the object passed.
- * This function <emph>can</emph> make an XObject that exposes DOM Nodes, NodeLists, and
- * NodeIterators to the XSLT stylesheet as node-sets.
- *
- * @param val The java object which this object will wrap.
- * @param xctxt The XPath context.
- *
- * @return the right XObject based on the type of the object passed.
- */
- static public XObject create(Object val, XPathContext xctxt)
- {
-
- XObject result;
-
- if (val instanceof XObject)
- {
- result = (XObject) val;
- }
- else if (val instanceof String)
- {
- result = new XString((String) val);
- }
- else if (val instanceof Boolean)
- {
- result = new XBoolean((Boolean)val);
- }
- else if (val instanceof Number)
- {
- result = new XNumber(((Number) val));
- }
- else if (val instanceof DTM)
- {
- DTM dtm = (DTM)val;
- try
- {
- int dtmRoot = dtm.getDocument();
- DTMAxisIterator iter = dtm.getAxisIterator(Axis.SELF);
- iter.setStartNode(dtmRoot);
- DTMIterator iterator = new OneStepIterator(iter, Axis.SELF);
- iterator.setRoot(dtmRoot, xctxt);
- result = new XNodeSet(iterator);
- }
- catch(Exception ex)
- {
- throw new org.apache.xml.utils.WrappedRuntimeException(ex);
- }
- }
- else if (val instanceof DTMAxisIterator)
- {
- DTMAxisIterator iter = (DTMAxisIterator)val;
- try
- {
- DTMIterator iterator = new OneStepIterator(iter, Axis.SELF);
- iterator.setRoot(iter.getStartNode(), xctxt);
- result = new XNodeSet(iterator);
- }
- catch(Exception ex)
- {
- throw new org.apache.xml.utils.WrappedRuntimeException(ex);
- }
- }
- else if (val instanceof DTMIterator)
- {
- result = new XNodeSet((DTMIterator) val);
- }
- // This next three instanceofs are a little worrysome, since a NodeList
- // might also implement a Node!
- else if (val instanceof org.w3c.dom.Node)
- {
- result = new XNodeSetForDOM((org.w3c.dom.Node)val, xctxt);
- }
- // This must come after org.w3c.dom.Node, since many Node implementations
- // also implement NodeList.
- else if (val instanceof org.w3c.dom.NodeList)
- {
- result = new XNodeSetForDOM((org.w3c.dom.NodeList)val, xctxt);
- }
- else if (val instanceof org.w3c.dom.traversal.NodeIterator)
- {
- result = new XNodeSetForDOM((org.w3c.dom.traversal.NodeIterator)val, xctxt);
- }
- else
- {
- result = new XObject(val);
- }
-
- return result;
- }
- }