PostGIS  2.5.0dev-r@@SVN_REVISION@@
static LWT_ISO_NODE* _lwt_GetIsoNode ( LWT_TOPOLOGY topo,
LWT_ELEMID  nid 
)
static

Definition at line 3722 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().

3723 {
3724  LWT_ISO_NODE *node;
3725  int n = 1;
3726 
3727  node = lwt_be_getNodeById( topo, &nid, &n, LWT_COL_NODE_CONTAINING_FACE );
3728  if ( n < 0 ) {
3729  lwerror("Backend error: %s", lwt_be_lastErrorMessage(topo->be_iface));
3730  return 0;
3731  }
3732  if ( n < 1 ) {
3733  lwerror("SQL/MM Spatial exception - non-existent node");
3734  return 0;
3735  }
3736  if ( node->containing_face == -1 )
3737  {
3738  lwfree(node);
3739  lwerror("SQL/MM Spatial exception - not isolated node");
3740  return 0;
3741  }
3742 
3743  return node;
3744 }
#define LWT_COL_NODE_CONTAINING_FACE
LWT_ELEMID containing_face
void lwfree(void *mem)
Definition: lwutil.c:244
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:156
const char * lwt_be_lastErrorMessage(const LWT_BE_IFACE *be)
Definition: lwgeom_topo.c:120
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:190

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