How to transform a long LINESTRING Transform

Question

Hi @ all,
I'm trying to transform a LineString to another CRS,
but when the LineString is to long I get error ORA-01704: string literal too long
My Select:
select a.*, a.geo.get_wkt()
from (
select SDO_CS.TRANSFORM(MDSYS.SDO_GEOMETRY('LINESTRING (6.88095 ........... 50.72032)', 8307), 82027) as geo from dual) a;
Is there any way to transform very long Linestrings ?

Answer 1

set serverout on
declare
temporaryCLob CLOB;
amount NUMBER;
offset NUMBER := 1;
buffer VARCHAR2(100) := 'LINESTRING ( ';
buffer2 VARCHAR2(100) := ' 1 2, 3 4, 5 6)';
g sdo_geometry;
BEGIN
DBMS_OUTPUT.ENABLE(1000000);
-- CREATE TEMPORARY LOB
DBMS_LOB.CREATETEMPORARY(
lob_loc => temporaryCLob, cache => true, dur => dbms_lob.session);
-- TEST TO SEE IF LOB IS TEMPORARY
IF (DBMS_LOB.ISTEMPORARY(temporaryCLob) = 1) THEN
DBMS_OUTPUT.PUT_LINE('This is a temporary LOB.');
ELSE
DBMS_OUTPUT.PUT_LINE('This is a persistent LOB.');
END IF;
-- OPEN TEMPORARY LOB FOR READ / WRITE
DBMS_LOB.OPEN(
lob_loc => temporaryCLob
, open_mode => DBMS_LOB.LOB_READWRITE
-- WRITE SMALL BUFFER TO TEMPORARY LOB
DBMS_LOB.WRITE(
lob_loc => temporaryCLob
, amount => LENGTH(buffer)
, offset => offset
, buffer => buffer
-- APPEND A SMALL BUFFER TO TEMPORARY LOB
DBMS_LOB.WRITEAPPEND(
lob_loc => temporaryCLob
, amount => LENGTH(buffer2)
, buffer => buffer2
-- GET CURRENT LENGTH OF TEMPORARY LOB
DBMS_OUTPUT.PUT_LINE(
'Current length of temporary LOB: ' || DBMS_LOB.GETLENGTH(temporaryCLob)
-- PRINT CONTENTS OF THE TEMPORARY LOB
DBMS_OUTPUT.PUT_LINE('Current content of temporary LOB:');
DBMS_OUTPUT.PUT_LINE(DBMS_LOB.SUBSTR(temporaryCLob, DBMS_LOB.GETLENGTH(temporaryCLob), 1));
-- CLOSE / FREE TEMPORARY LOB
DBMS_LOB.CLOSE(lob_loc => temporaryCLob);
g := sdo_geometry(temporaryCLob);
DBMS_LOB.FREETEMPORARY(lob_loc => temporaryCLob);
END;
/