Name
st_wkb_read, http_st_wkb — parse and emit OGC Well-Known Binary (WKB) geometry
Synopsis
any st_wkb_read(
|
in wkb any, |
in srid integer); |
http_st_wkb(
|
in geom any, |
in session any); |
Description
st_wkb_read parses an OGC Well-Known Binary (WKB)
geometry from wkb and returns a Virtuoso geometry
value. The input may be a binary string, a varbinary box, or a
string-session containing the raw bytes. The optional
srid argument overrides the SRID embedded in the
WKB header; when omitted, the default SRID is used. The parser accepts
both little-endian and big-endian WKB and the extended (EWKB) encoding
with Z, M and SRID flags.
http_st_wkb serializes geom as
WKB into session, which must be an HTTP output
session or a string-session. This is the inverse of
st_wkb_read and is intended for use inside VSP/VSPX
handlers that stream WKB to a client.
Both functions raise SQL error 41000 with hint GEO16 if
the server was built with DISABLE_WKB.
See Also
st_astext,
st_geomfromtext,
st_ewkt_read,
http_st_ewkt,
http_st_dxf_entity