/**
* @param elements
* @param multiplicities
* @return
*/
public TreeReference getChildInstanceRef(Vector elements, Vector multiplicities) {
if (elements.size() == 0) return null;
// get reference for target element
TreeReference ref =
FormInstance.unpackReference(((IFormElement) elements.lastElement()).getBind()).clone();
for (int i = 0; i < ref.size(); i++) {
// There has to be a better way to encapsulate this
if (ref.getMultiplicity(i) != TreeReference.INDEX_ATTRIBUTE) {
ref.setMultiplicity(i, 0);
}
}
// fill in multiplicities for repeats along the way
for (int i = 0; i < elements.size(); i++) {
IFormElement temp = (IFormElement) elements.elementAt(i);
if (temp instanceof GroupDef && ((GroupDef) temp).getRepeat()) {
TreeReference repRef = FormInstance.unpackReference(temp.getBind());
if (repRef.isParentOf(ref, false)) {
int repMult = ((Integer) multiplicities.elementAt(i)).intValue();
ref.setMultiplicity(repRef.size() - 1, repMult);
} else {
return null; // question/repeat hierarchy is not consistent
// with instance instance and bindings
}
}
}
return ref;
}
public static QuestionDef findQuestionByRef(TreeReference ref, IFormElement fe) {
if (fe instanceof FormDef) {
ref = ref.genericize();
}
if (fe instanceof QuestionDef) {
QuestionDef q = (QuestionDef) fe;
TreeReference bind = FormInstance.unpackReference(q.getBind());
return (ref.equals(bind) ? q : null);
} else {
for (int i = 0; i < fe.getChildren().size(); i++) {
QuestionDef ret = findQuestionByRef(ref, fe.getChild(i));
if (ret != null) return ret;
}
return null;
}
}