public void setInstance(FormInstance instance) {
if (instance.getFormId() != -1 && getID() != instance.getFormId()) {
System.err.println(
"Warning: assigning incompatible instance (type "
+ instance.getFormId()
+ ") to a formdef (type "
+ getID()
+ ")");
}
instance.setFormId(getID());
this.instance = instance;
attachControlsToInstanceData();
}
private void attachControlsToInstanceData(TreeElement node) {
for (int i = 0; i < node.getNumChildren(); i++) {
attachControlsToInstanceData(node.getChildAt(i));
}
IAnswerData val = node.getValue();
Vector selections = null;
if (val instanceof SelectOneData) {
selections = new Vector();
selections.addElement(val.getValue());
} else if (val instanceof SelectMultiData) {
selections = (Vector) val.getValue();
}
if (selections != null) {
QuestionDef q = findQuestionByRef(node.getRef(), this);
if (q == null) {
throw new RuntimeException(
"FormDef.attachControlsToInstanceData: can't find question to link");
}
if (q.getDynamicChoices() != null) {
// droos: i think we should do something like initializing the itemset here, so that default
// answers
// can be linked to the selectchoices. however, there are complications. for example, the
// itemset might
// not be ready to be evaluated at form initialization; it may require certain questions to
// be answered
// first. e.g., if we evaluate an itemset and it has no choices, the xform engine will throw
// an error
// itemset TODO
}
for (int i = 0; i < selections.size(); i++) {
Selection s = (Selection) selections.elementAt(i);
s.attachChoice(q);
}
}
}
/**
* Link a deserialized instance back up with its parent FormDef. this allows select/select1
* questions to be internationalizable in chatterbox, and (if using CHOICE_INDEX mode) allows the
* instance to be serialized to xml
*/
public void attachControlsToInstanceData() {
attachControlsToInstanceData(instance.getRoot());
}