PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ ST_IsCollection()

Datum ST_IsCollection ( PG_FUNCTION_ARGS  )

Definition at line 2116 of file lwgeom_functions_basic.c.

References dumpnode::geom, gserialized_get_type(), LWGEOM_makepoint(), lwtype_is_collection(), PG_FUNCTION_INFO_V1(), and ovdump::type.

Referenced by ST_MakeEnvelope().

2117 {
2118  GSERIALIZED *geom;
2119  int type;
2120  size_t size;
2121 
2122  /* Pull only a small amount of the tuple, enough to get the type. */
2123  /* header + srid/flags + bbox? + type number */
2124  size = VARHDRSZ + 8 + 32 + 4;
2125 
2126  geom = PG_GETARG_GSERIALIZED_P_SLICE(0, 0, size);
2127 
2128  type = gserialized_get_type(geom);
2129  PG_RETURN_BOOL(lwtype_is_collection(type));
2130 }
uint32_t gserialized_get_type(const GSERIALIZED *s)
Extract the geometry type from the serialized form (it hides in the anonymous data area...
Definition: g_serialized.c:69
LWGEOM * geom
int lwtype_is_collection(uint8_t type)
Determine whether a type number is a collection or not.
Definition: lwgeom.c:1012
type
Definition: ovdump.py:41
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