//
// boolean nodeset = forceNodeset;
// if (!nodeset) {
// //is this a nodeset? it is if the ref contains any unbound multiplicities AND the unbound nodes are repeatable
// //the way i'm calculating this sucks; there has got to be an easier way to find out if a node is repeatable
// TreeReference repeatTestRef = TreeReference.rootRef();
// for (int i = 0; i < ref.size(); i++) {
// repeatTestRef.add(ref.getName(i), ref.getMultiplicity(i));
// if (ref.getMultiplicity(i) == TreeReference.INDEX_UNBOUND) {
// if (m.getTemplate(repeatTestRef) != null) {
// nodeset = true;
// break;
// }
// }
// }
// }
public static Object getRefValue(FormInstance model, EvaluationContext ec, TreeReference ref_)
{
if (ec.isConstraint && ref_.Equals(ec.ContextRef))
{
//ITEMSET TODO: need to update this; for itemset/copy constraints, need to simulate a whole xml sub-tree here
return(unpackValue(ec.candidateValue));
}
else
{
TreeElement node = model.resolveReference(ref_);
if (node == null)
{
//shouldn't happen -- only existent nodes should be in nodeset
throw new XPathTypeMismatchException("Node " + ref_.toString() + " does not exist!");
}
return(unpackValue(node.isRelevant() ? node.getValue() : null));
}
}
public override object eval(FormInstance m, EvaluationContext evalContext)
{
TreeReference genericRef = getReference();
if (genericRef.isAbsolute() && m.getTemplatePath(genericRef) == null)
{
throw new XPathTypeMismatchException("Node " + genericRef.toString() + " does not exist!");
}
TreeReference ref_ = genericRef.contextualize(evalContext.ContextRef);
List <TreeReference> nodesetRefs = m.expandReference(ref_);
//to fix conditions based on non-relevant data, filter the nodeset by relevancy
for (int i = 0; i < nodesetRefs.Count; i++)
{
if (!m.resolveReference((TreeReference)nodesetRefs[i]).isRelevant())
{
nodesetRefs.RemoveAt(i);
i--;
}
}
return(new XPathNodeset(nodesetRefs, m, evalContext));
}
/**
* recursively read in a node of the instance, by filling out the template instance
* @param e
* @param ref
* @param in
* @param pf
* @throws IOException
* @throws DeserializationException
*/
private void readTreeElement(TreeElement e, BinaryReader in_, PrototypeFactory pf)
{
TreeElement templ = instance.getTemplatePath(e.getRef());
Boolean isGroup = !templ.isLeaf();
if (isGroup)
{
ArrayList childTypes = new ArrayList();
for (int i = 0; i < templ.getNumChildren(); i++)
{
String childName = templ.getChildAt(i).getName();
if (!childTypes.Contains(childName))
{
childTypes.Add(childName);
}
}
for (int i = 0; i < childTypes.Count; i++)
{
String childName = (String)childTypes[i];
TreeReference childTemplRef = e.getRef().extendRef(childName, 0);
TreeElement childTempl = instance.getTemplatePath(childTemplRef);
Boolean repeatable = childTempl.repeatable;
int n = ExtUtil.readInt(in_);
Boolean relevant = (n > 0);
if (!repeatable && n > 1)
{
throw new DeserializationException("Detected repeated instances of a non-repeatable node");
}
if (repeatable)
{
int mult = e.getChildMultiplicity(childName);
for (int j = mult - 1; j >= 0; j--)
{
e.removeChild(childName, j);
}
for (int j = 0; j < n; j++)
{
TreeReference dstRef = e.getRef().extendRef(childName, j);
try
{
instance.copyNode(childTempl, dstRef);
}
catch (InvalidReferenceException ire)
{
//If there is an invalid reference, this is a malformed instance,
//so we'll throw a Deserialization exception.
TreeReference r = ire.InvalidReference;
if (r == null)
{
throw new DeserializationException("Null Reference while attempting to deserialize! " + ire.Message);
}
else
{
throw new DeserializationException("Invalid Reference while attemtping to deserialize! Reference: " + r.toString(true) + " | " + ire.Message);
}
}
TreeElement child = e.getChild(childName, j);
child.setRelevant(true);
readTreeElement(child, in_, pf);
}
}
else
{
TreeElement child = e.getChild(childName, 0);
child.setRelevant(relevant);
if (relevant)
{
readTreeElement(child, in_, pf);
}
}
}
}
else
{
e.setValue((IAnswerData)ExtUtil.read(in_, new ExtWrapAnswerData(e.dataType)));
}
}