public void DeleteRelation(RelationNode relationNode)
{
FkRelation fkRelation = relationNode.Relation as FkRelation;
TableNode parentNode = null;
if (fkRelation == null)
{
ForeignFkRelation ffkrel = relationNode.Relation as ForeignFkRelation;
if (ffkrel == null)
{
return;
}
parentNode = (TableNode)this.databaseNode.FindNode(ffkrel.RelatedTable, typeof(TableNode));
relationNode = parentNode.FindRelationNode(relationNode.Text, relationNode.Parent.Text); //(RelationNode) parentNode.FindNode(relationNode.Text, typeof(RelationNode));
fkRelation = (FkRelation)relationNode.Relation;
if (parentNode.Table.MappingType == TableMappingType.MappedAsIntermediateClass)
{
parentNode.UnmapIntermediateClass(null, EventArgs.Empty);
return;
}
}
else
{
parentNode = (TableNode)relationNode.Parent;
}
//parentNode.Nodes. Remove(relationNode);
relationNode.Remove();
parentNode.Nodes.Add(relationNode.OriginalColumnNode);
Debug.Assert(fkRelation != null);
if (fkRelation != null)
{
if (fkRelation.RelationDirection != RelationDirection.DirectedFromMe)
{
TableNode tn = databaseNode.FindTableNode(fkRelation.RelatedTable, true);
RelationNode nodeToRemove = tn.FindRelationNode(relationNode.Text, parentNode.Text);
if (nodeToRemove != null)
{
nodeToRemove.Remove();
}
}
}
}
