function: bd500LeftNeighbor description: Determines the left neighbor. This can be an expensive operation, if the left neighbor node is not already known, because of a previous operation. In worst case, a CopyTree is created and there the PrevNode is searched. returns: page_no of left neighbor node. Definition at line 743 of file vbd500.cpp. References bd500LeftNeighborId(), cbd600_Node::bd600IsAccessable(), cbd600_Node::m_Current, and cbd600_Node::m_RequestKind. { ROUTINE_DBG_MEO00 ("bd500LeftNeighbor"); if ( ! m_Node.bd600IsAccessable() ) return NIL_PAGE_NO_GG00; cbd600_Node auxNode(m_Node.m_Current, m_Node.m_RequestKind); return bd500LeftNeighborId(auxNode); }
