/**
* list comma spearated list of ids
*
* @param statusTransitionRoles
* @return
*/
public static String getIds(List objects) {
if (objects == null) {
return "empty";
}
String ids = "";
for (Iterator iter = objects.iterator(); iter.hasNext(); ) {
DataObject object = (DataObject) iter.next();
ids += object.getId() + (iter.hasNext() ? "," : "");
}
return ids;
}
/**
* Check if the data model objects are equivalent to each other.
*
* @param left
* @param right
* @return
*/
public static boolean isEquivalent(DataObject left, DataObject right) {
// if they are both null then return true
if (left == null && right == null) {
return true;
}
// at this point if either of them is null return false
if (left == null || right == null) {
return false;
}
// compare the ids
return DataUtil.equals(left.getId(), right.getId());
}
/**
* Return the id of the given data object
*
* @param object
* @return
*/
public static Integer getId(DataObject object) {
return object == null ? null : object.getId();
}