PostGIS  2.2.8dev-r@@SVN_REVISION@@

◆ _lwt_GetIsoNode()

static LWT_ISO_NODE* _lwt_GetIsoNode ( LWT_TOPOLOGY topo,
LWT_ELEMID  nid 
)
static

Definition at line 3652 of file lwgeom_topo.c.

References LWT_TOPOLOGY_T::be_iface, LWT_ISO_NODE::containing_face, lwerror(), lwfree(), lwt_be_getNodeById(), lwt_be_lastErrorMessage(), and LWT_COL_NODE_CONTAINING_FACE.

Referenced by lwt_MoveIsoNode(), and lwt_RemoveIsoNode().

3653 {
3654  LWT_ISO_NODE *node;
3655  int n = 1;
3656 
3657  node = lwt_be_getNodeById( topo, &nid, &n, LWT_COL_NODE_CONTAINING_FACE );
3658  if ( n < 0 ) {
3659  lwerror("Backend error: %s", lwt_be_lastErrorMessage(topo->be_iface));
3660  return 0;
3661  }
3662  if ( n < 1 ) {
3663  lwerror("SQL/MM Spatial exception - non-existent node");
3664  return 0;
3665  }
3666  if ( node->containing_face == -1 )
3667  {
3668  lwfree(node);
3669  lwerror("SQL/MM Spatial exception - not isolated node");
3670  return 0;
3671  }
3672 
3673  return node;
3674 }
#define LWT_COL_NODE_CONTAINING_FACE
LWT_ELEMID containing_face
void lwfree(void *mem)
Definition: lwutil.c:214
const LWT_BE_IFACE * be_iface
LWT_ISO_NODE * lwt_be_getNodeById(LWT_TOPOLOGY *topo, const LWT_ELEMID *ids, int *numelems, int fields)
Definition: lwgeom_topo.c:160
const char * lwt_be_lastErrorMessage(const LWT_BE_IFACE *be)
Definition: lwgeom_topo.c:124
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:74
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