public static DefaultCellInfo loadFrom(Element e) {
String cellId;
int cellNumber;
boolean isInList;
final String nodeReference;
DefaultCellInfo parentInfo = null;
cellId = e.getAttributeValue(CELL_ID);
String num = e.getAttributeValue(CELL_NUMBER);
if (num == null) return null;
try {
cellNumber = Integer.parseInt(num);
} catch (NumberFormatException ex) {
return null;
}
isInList = "true".equals(e.getAttributeValue(IS_IN_LIST));
Element nodeElem = e.getChild(NODE);
if (nodeElem == null) return null;
nodeReference = nodeElem.getAttributeValue(NODE_REFERENCE);
if (nodeReference == null) return null;
Element parentElem = e.getChild(PARENT);
if (parentElem != null) {
parentInfo = loadFrom(parentElem);
if (parentInfo == null) return null;
}
final DefaultCellInfo result = new DefaultCellInfo();
result.myNodeReference = PersistenceFacade.getInstance().createNodeReference(nodeReference);
result.myCellId = cellId;
result.myParentInfo = parentInfo;
result.myIsInList = isInList;
result.myCellNumber = cellNumber;
return result;
}
public void saveTo(Element e) {
if (myCellId != null) {
e.setAttribute(CELL_ID, myCellId);
}
e.setAttribute(CELL_NUMBER, "" + myCellNumber);
e.setAttribute(IS_IN_LIST, "" + myIsInList);
Element nodeElement = new Element(NODE);
if (myNodeReference != null) {
nodeElement.setAttribute(NODE_REFERENCE, myNodeReference.toString());
}
e.addContent(nodeElement);
if (myParentInfo instanceof DefaultCellInfo) {
Element parentElement = new Element(PARENT);
((DefaultCellInfo) myParentInfo).saveTo(parentElement);
e.addContent(parentElement);
}
}