sboag 00/07/23 10:46:25
Modified: java/src/org/apache/xalan/transformer TransformerImpl.java
Log:
Implement TransformerClient interface.
Revision Changes Path
1.7 +148 -19
xml-xalan/java/src/org/apache/xalan/transformer/TransformerImpl.java
Index: TransformerImpl.java
===================================================================
RCS file:
/home/cvs/xml-xalan/java/src/org/apache/xalan/transformer/TransformerImpl.java,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- TransformerImpl.java 2000/07/21 20:57:01 1.6
+++ TransformerImpl.java 2000/07/23 17:46:25 1.7
@@ -81,6 +81,7 @@
import org.apache.xalan.templates.AVT;
import org.apache.xalan.templates.ElemVariable;
import org.apache.xalan.templates.ElemParam;
+import org.apache.xalan.templates.ElemTemplate;
import org.apache.xalan.trace.TraceManager;
@@ -162,7 +163,8 @@
* @see XSLTProcessorFactory
* @see XSLTProcessor
*/
-public class TransformerImpl extends XMLFilterImpl implements Transformer,
Runnable
+public class TransformerImpl extends XMLFilterImpl
+ implements Transformer, Runnable, TransformState
{
//==========================================================
// SECTION: Constructors
@@ -1016,30 +1018,40 @@
// If we are processing the default text rule, then just clone
// the value directly to the result tree.
- if(isDefaultTextRule)
+ try
{
- switch(nodeType)
+ m_currentMatchTemplates.push(template);
+ m_currentMatchNodes.push(child);
+ if(isDefaultTextRule)
{
- case Node.CDATA_SECTION_NODE:
- case Node.TEXT_NODE:
- getResultTreeHandler().cloneToResultTree(stylesheetTree, child,
false, false, false);
- break;
- case Node.ATTRIBUTE_NODE:
+ switch(nodeType)
{
- String val = ((Attr)child).getValue();
- getResultTreeHandler().characters(val.toCharArray(), 0,
val.length());
+ case Node.CDATA_SECTION_NODE:
+ case Node.TEXT_NODE:
+ getResultTreeHandler().cloneToResultTree(stylesheetTree, child,
false, false, false);
+ break;
+ case Node.ATTRIBUTE_NODE:
+ {
+ String val = ((Attr)child).getValue();
+ getResultTreeHandler().characters(val.toCharArray(), 0,
val.length());
+ }
+ break;
}
- break;
+ }
+ else
+ {
+ // Fire a trace event for the template.
+ if(TransformerImpl.S_DEBUG)
+ getTraceManager().fireTraceEvent(child, mode, template);
+
+ // And execute the child templates.
+ executeChildTemplates(template, child, mode);
}
}
- else
+ finally
{
- // Fire a trace event for the template.
- if(TransformerImpl.S_DEBUG)
- getTraceManager().fireTraceEvent(child, mode, template);
-
- // And execute the child templates.
- executeChildTemplates(template, child, mode);
+ m_currentMatchTemplates.pop();
+ m_currentMatchNodes.pop();
}
return true;
}
@@ -1085,7 +1097,15 @@
t = t.getNextSiblingElem())
{
xctxt.setSAXLocator(t);
- t.execute(this, sourceNode, mode);
+ try
+ {
+ pushElemTemplateElement(t, sourceNode);
+ t.execute(this, sourceNode, mode);
+ }
+ finally
+ {
+ popElemTemplateElement();
+ }
}
}
finally
@@ -1173,6 +1193,115 @@
}
return keys;
}
+
+ //==========================================================
+ // SECTION: TransformState implementation
+ //==========================================================
+
+ private Stack m_currentTemplateElements = new Stack();
+ private Stack m_currentNodes = new Stack();
+
+ /**
+ * Push the current template element.
+ */
+ public void pushElemTemplateElement(ElemTemplateElement elem, Node
currentNode)
+ {
+ m_currentTemplateElements.push(elem);
+ m_currentNodes.push(currentNode);
+ }
+
+ /**
+ * Pop the current template element.
+ */
+ public void popElemTemplateElement()
+ {
+ m_currentTemplateElements.pop();
+ m_currentNodes.pop();
+ }
+
+ /**
+ * Retrieves the stylesheet element that produced
+ * the SAX event.
+ */
+ public ElemTemplateElement getCurrentElement()
+ {
+ return (ElemTemplateElement)m_currentTemplateElements.peek();
+ }
+
+ /**
+ * This method retrieves the current context node
+ * in the source tree.
+ */
+ public Node getCurrentNode()
+ {
+ return (Node)m_currentNodes.peek();
+ }
+
+ /**
+ * This method retrieves the xsl:template
+ * that is in effect, which may be a matched template
+ * or a named template.
+ *
+ * <p>Please note that the ElemTemplate returned may
+ * be a default template, and thus may not have a template
+ * defined in the stylesheet.</p>
+ */
+ public ElemTemplate getCurrentTemplate()
+ {
+ ElemTemplateElement elem = getCurrentElement();
+ while((null != elem) && (elem.getXSLToken() !=
Constants.ELEMNAME_TEMPLATE))
+ elem = elem.getParentElem();
+ return (ElemTemplate)elem;
+ }
+
+ private Stack m_currentMatchTemplates = new Stack();
+ private Stack m_currentMatchNodes = new Stack();
+
+ /**
+ * This method retrieves the xsl:template
+ * that was matched. Note that this may not be
+ * the same thing as the current template (which
+ * may be from getCurrentElement()), since a named
+ * template may be in effect.
+ */
+ public ElemTemplate getMatchedTemplate()
+ {
+ return (ElemTemplate)m_currentMatchTemplates.peek();
+ }
+
+ /**
+ * Retrieves the node in the source tree that matched
+ * the template obtained via getMatchedTemplate().
+ */
+ public Node getMatchedNode()
+ {
+ return (Node)m_currentMatchNodes.peek();
+ }
+
+ /**
+ * Get the current context node list.
+ */
+ public NodeIterator getContextNodeList()
+ {
+ try
+ {
+ return getXPathContext().getContextNodeList().cloneWithReset();
+ }
+ catch(CloneNotSupportedException cnse)
+ {
+ // should never happen.
+ return null;
+ }
+ }
+
+ /**
+ * Get the TrAX Transformer object in effect.
+ */
+ public Transformer getTransformer()
+ {
+ return this;
+ }
+
//==========================================================
// SECTION: Member variables
