public boolean setMiddleChild ( N newChild ) { final N oldChild = this . middle ; if ( oldChild == newChild ) { return false ; } if ( oldChild != null ) { oldChild . setParentNodeReference ( null , true ) ; -- this . notNullChildCount ; firePropertyChildRemoved ( 1 , oldChild ) ; } if ( newChild != null ) { final N oldParent = newChild . getParentNode ( ) ; if ( oldParent != this ) { newChild . removeFromParent ( ) ; } } this . middle = newChild ; if ( newChild != null ) { newChild . setParentNodeReference ( toN ( ) , true ) ; ++ this . notNullChildCount ; firePropertyChildAdded ( 1 , newChild ) ; } return true ; }
Set the middle child of this node .