* probe_s13_refcursor.prg
* Ce anume nu poate materializa VFP la statement-ul {call pack_facturare.scrie_factura2(...)}:
* rezultatul lui este REF CURSOR-ul OUT V_CURSOR_VERIFICARE (parametrul 17, nedat in apel, legat
* automat de driverul ODBC ca result set). Doua ramuri posibile in pachet (liniile 4877/4881,
* 5113/5126 din PACKAGE BODY):
*   a) pack_facturare.cursor_verificare(...)  - SELECT cu ~75 coloane si 17 JOIN-uri pe ACT_TEMP
*   b) SELECT * FROM ACT_TEMP WHERE 1 = 2     - doar coloanele lui ACT_TEMP
* Probam ambele forme direct prin SQLExec, in aceeasi sesiune, FARA nicio scriere:
* cursor_verificare are un singur parametru, OUT REF CURSOR, deci nu modifica nimic.

SET SAFETY OFF
SET TALK OFF

PUBLIC gcErrLog
gcErrLog = 'D:\ROA\ROAFACTURARE\COMUN\utile\Teste\editare_factura\probe_s13_refcursor_log_' + ;
	STRTRAN(STRTRAN(STRTRAN(TTOC(DATETIME()), '/', ''), ':', ''), ' ', '_') + '.txt'
STRTOFILE('start ' + TRANSFORM(DATETIME()) + '  MARCA=S13-REFCURSOR' + CHR(13) + CHR(10), gcErrLog)

ON SHUTDOWN QUIT

DO ('D:\ROA\ROAFACTURARE\COMUN\utile\Teste\test_init_env_auto_roafacturare.prg') WITH 'CENTRAL', 'MARIUSM_AUTO', 'ROMFASTSOFT', 2009, 4, 0
IF gnHandle <= 0
	STRTOFILE('EROARE: conectare esuata' + CHR(13) + CHR(10), gcErrLog, 1)
	QUIT
ENDIF

DO Incearca WITH 'A. select direct din ACT_TEMP', [select * from act_temp where 1 = 2], 'c_a'
DO Incearca WITH 'B. {call} cu REF CURSOR OUT (cursor_verificare)', [{call pack_facturare.cursor_verificare}], 'c_b'
DO Incearca WITH 'C. select cu 300 de coloane din dual', ConstruiesteSelectLarg(300), 'c_c'
DO Incearca WITH 'D. select cu 254 de coloane din dual', ConstruiesteSelectLarg(254), 'c_d'
DO Incearca WITH 'E. select cu 255 de coloane din dual', ConstruiesteSelectLarg(255), 'c_e'
DO Incearca WITH 'F. select cu 256 de coloane din dual', ConstruiesteSelectLarg(256), 'c_f'

STRTOFILE('end ' + TRANSFORM(DATETIME()) + CHR(13) + CHR(10), gcErrLog, 1)
QUIT


*==============================================================================================
FUNCTION ConstruiesteSelectLarg
	LPARAMETERS tnN
	LOCAL lcS, lnI
	lcS = 'select '
	FOR lnI = 1 TO tnN
		lcS = lcS + IIF(lnI > 1, ',', '') + '1 as c' + TRANSFORM(lnI)
	ENDFOR
	RETURN lcS + ' from dual'
ENDFUNC


PROCEDURE Incearca
	LPARAMETERS tcEticheta, tcSql, tcCursor
	LOCAL lnRet, loEx, laE[1], lnI, lnLatime, laF[1], lnF

	IF USED(tcCursor)
		USE IN (tcCursor)
	ENDIF

	STRTOFILE('--- ' + tcEticheta + ' ---' + CHR(13) + CHR(10) + ;
		'    SQL(len=' + TRANSFORM(LEN(tcSql)) + ')=[' + LEFT(tcSql, 400) + IIF(LEN(tcSql) > 400, '...', '') + ']' + CHR(13) + CHR(10), gcErrLog, 1)

	lnRet = -999
	TRY
		lnRet = SQLExec(gnHandle, tcSql, tcCursor)
		STRTOFILE('    ret=' + TRANSFORM(lnRet) + CHR(13) + CHR(10), gcErrLog, 1)
		IF lnRet < 0
			IF AERROR(laE) > 0
				STRTOFILE('    AERROR: ' + TRANSFORM(laE[1]) + ' | ' + TRANSFORM(laE[2]) + ' | ' + TRANSFORM(laE[3]) + CHR(13) + CHR(10), gcErrLog, 1)
			ENDIF
		ELSE
			IF USED(tcCursor)
				lnF = AFIELDS(laF, tcCursor)
				lnLatime = 0
				FOR lnI = 1 TO lnF
					lnLatime = lnLatime + laF[lnI, 3]
				ENDFOR
				STRTOFILE('    cursor creat: ' + TRANSFORM(lnF) + ' coloane, latime rand = ' + TRANSFORM(lnLatime) + ' octeti, ' + ;
					TRANSFORM(RECCOUNT(tcCursor)) + ' randuri' + CHR(13) + CHR(10), gcErrLog, 1)
				USE IN (tcCursor)
			ELSE
				STRTOFILE('    (niciun cursor creat)' + CHR(13) + CHR(10), gcErrLog, 1)
			ENDIF
		ENDIF
	CATCH TO loEx
		STRTOFILE('    EXCEPTIE: ErrorNo=' + TRANSFORM(loEx.ErrorNo) + ' Message=[' + TRANSFORM(loEx.Message) + ']' + CHR(13) + CHR(10), gcErrLog, 1)
	ENDTRY
ENDPROC