/// <summary> For the current index: Checks whether the index represents a node which
/// should exist given a non-interactive repeat, along with a count for that
/// repeat which is beneath the dynamic level specified.
///
/// If this index does represent such a node, the new model for the repeat is
/// created behind the scenes and the index for the initial question is
/// returned.
///
/// Note: This method will not prevent the addition of new repeat elements in
/// the interface, it will merely use the xforms repeat hint to create new
/// nodes that are assumed to exist
///
/// </summary>
/// <param name="index">The index to be evaluated as to whether the underlying model is
/// hinted to exist
/// </param>
private void createModelIfNecessary(FormIndex index)
{
if (index.InForm)
{
IFormElement e = Form.getChild(index);
if (e is GroupDef)
{
GroupDef g = (GroupDef)e;
if (g.Repeat && g.CountReference != null)
{
// Lu Gram: repeat count XPath needs to be contextualized for nested repeat groups
TreeReference countRef = FormInstance.unpackReference(g.CountReference);
TreeReference contextualized = countRef.contextualize(index.Reference);
IAnswerData count = Form.MainInstance.resolveReference(contextualized).getValue();
if (count != null)
{
long fullcount = ((System.Int32)count.Value);
TreeReference ref_Renamed = Form.getChildInstanceRef(index);
TreeElement element = Form.MainInstance.resolveReference(ref_Renamed);
if (element == null)
{
if (index.getTerminal().InstanceIndex < fullcount)
{
try
{
Form.createNewRepeat(index);
}
catch (InvalidReferenceException ire)
{
SupportClass.WriteStackTrace(ire, Console.Error);
//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Throwable.getMessage' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
throw new System.SystemException("Invalid Reference while creting new repeat!" + ire.Message);
}
}
}
}
}
}
}
}