public void unrelateAcrossR301From(Graphelement_c target, boolean notifyChanges) {
if (target == null) return;
if (IsSupertypeGraphelement == null) return; // already unrelated
if (target != IsSupertypeGraphelement) {
Exception e = new Exception();
e.fillInStackTrace();
CanvasPlugin.logError("Tried to unrelate from non-related instance across R301", e);
return;
}
if (target != null) {
target.clearBackPointerR301To(this);
}
if (IsSupertypeGraphelement != null) {
m_elementid = IsSupertypeGraphelement.getElementid();
if (IdAssigner.NULL_UUID.equals(m_elementid)) {
m_elementid = IsSupertypeGraphelement.getElementidCachedValue();
}
IsSupertypeGraphelement = null;
target.removeRef();
if (notifyChanges) {
RelationshipChangeModelDelta change =
new RelationshipChangeModelDelta(
Modeleventnotification_c.DELTA_ELEMENT_UNRELATED, this, target, "301", "");
Ooaofgraphics.getDefaultInstance().fireModelElementRelationChanged(change);
}
}
}
