/**
* Create a new <code>DTMIterator</code> that holds exactly one node.
*
* @param node The node handle that the DTMIterator will iterate to.
* @return The newly created <code>DTMIterator</code>.
*/
public DTMIterator createDTMIterator(int node) {
// DescendantIterator iter = new DescendantIterator();
DTMIterator iter = new com.sun.org.apache.xpath.internal.axes.OneStepIteratorForward(Axis.SELF);
iter.setRoot(node, this);
return iter;
// return m_dtmManager.createDTMIterator(node);
}
/**
* Get the current context node list.
*
* @return An iterator for the current context list, as defined in XSLT.
*/
public final DTMIterator getContextNodes() {
try {
DTMIterator cnl = getContextNodeList();
if (null != cnl) return cnl.cloneWithReset();
else return null; // for now... this might ought to be an empty iterator.
} catch (CloneNotSupportedException cnse) {
return null; // error reporting?
}
}
/**
* Initialize the context values for this expression after it is cloned.
*
* @param context The XPath runtime context for this transformation.
*/
public void setRoot(int context, Object environment) {
super.setRoot(context, environment);
try {
if (null != m_exprs) {
int n = m_exprs.length;
DTMIterator newIters[] = new DTMIterator[n];
for (int i = 0; i < n; i++) {
DTMIterator iter = m_exprs[i].asIterator(m_execContext, context);
newIters[i] = iter;
iter.nextNode();
}
m_iterators = newIters;
}
} catch (Exception e) {
throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(e);
}
}
/**
* Add an iterator to the union list.
*
* @param expr non-null reference to a location path iterator.
*/
public void addIterator(DTMIterator expr) {
// Increase array size by only 1 at a time. Fix this
// if it looks to be a problem.
if (null == m_iterators) {
m_iterators = new DTMIterator[1];
m_iterators[0] = expr;
} else {
DTMIterator[] exprs = m_iterators;
int len = m_iterators.length;
m_iterators = new DTMIterator[len + 1];
System.arraycopy(exprs, 0, m_iterators, 0, len);
m_iterators[len] = expr;
}
expr.nextNode();
if (expr instanceof Expression) ((Expression) expr).exprSetParent(this);
}
