// this update is always safe
public final void updateSelectionAction() throws DbException {
ApplicationDiagram diag = ApplicationContext.getFocusManager().getActiveDiagram();
Object[] objects = ApplicationContext.getFocusManager().getSelectedSemanticalObjects();
if ((diag == null) || (objects.length != 1) || !(objects[0] instanceof DbORAssociationEnd)) {
setSelectedIndex(-1);
setEnabled(false);
return;
}
// update values
dbos.clear();
DbORAssociationEnd end = (DbORAssociationEnd) objects[0];
DbORPrimaryUnique selKey = end.getReferencedConstraint();
DbORAbsTable tableSo = (DbORAbsTable) end.getOppositeEnd().getClassifier();
DbEnumeration dbEnum = tableSo.getComponents().elements(DbORPrimaryUnique.metaClass);
while (dbEnum.hasMoreElements()) {
DbORPrimaryUnique key = (DbORPrimaryUnique) dbEnum.nextElement();
dbos.add(key);
}
dbEnum.close();
int sizeadjustment = (dbos.size() == 0) ? 1 : 2; // adding a separator
// and an item for
// removing the
// referenced
// constraint
// if no keys, do not add a separator
Object[] items = new Object[dbos.size() + sizeadjustment];
items[0] = kNoReferencedConstraint;
if (sizeadjustment == 2) {
items[1] = null;
}
String tableName = tableSo.getName();
for (int i = 0; i < dbos.size(); i++) {
String name = ((DbORPrimaryUnique) dbos.get(i)).getName();
items[i + sizeadjustment] =
MessageFormat.format(kKeyNamePatern, new Object[] {tableName, name});
}
setDomainValues(items);
if (selKey == null) setSelectedIndex(0);
else setSelectedIndex(dbos.indexOf(selKey) + sizeadjustment);
setEnabled(true);
}
private DbORTable findParentTable(DbORTable t1) throws DbException {
DbORTable parent = null;
DbRelationN relN = t1.getAssociationEnds();
DbEnumeration enu = relN.elements(DbORAssociationEnd.metaClass);
while (enu.hasMoreElements()) {
DbORAssociationEnd end = (DbORAssociationEnd) enu.nextElement();
int mult = end.getMultiplicity().getValue();
if (mult == SMSMultiplicity.EXACTLY_ONE) {
DbORAssociationEnd oppEnd = end.getOppositeEnd();
DbORAbsTable t = oppEnd.getClassifier();
if (t instanceof DbORTable) {
parent = (DbORTable) t;
break;
}
} // end if
} // end while
enu.close();
return parent;
}