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/*
* OpenDBX - A simple but extensible database abstraction layer
* Copyright (C) 2006-2008 Norbert Sendetzky and others
*
* Distributed under the terms of the GNU Library General Public Licence
* version 2 or (at your option) any later version.
*/
#ifdef HAVE_OCILOBWRITE2
#define ORAXB8_DEFINED
// Oracle 10.2.0 workaround, bug 4901517
#ifndef oraub8
typedef unsigned long long oraub8;
#endif
#include "oracle_lo.h"
#include <ociap.h>
#include <stdlib.h>
/*
* Declaration of Oracle capabilities
*/
struct odbx_lo_ops oracle_odbx_lo_ops = {
.open = oracle_odbx_lo_open,
.close = oracle_odbx_lo_close,
.read = oracle_odbx_lo_read,
.write = oracle_odbx_lo_write,
};
/*
* ODBX large object operations
* Oracle style
*/
static int oracle_odbx_lo_open( odbx_result_t* result, odbx_lo_t** lo, const char* value )
{
struct oralob* oralob;
struct oraconn* conn = (struct oraconn*) result->handle->aux;
if( ( *lo = (odbx_lo_t*) malloc( sizeof( struct odbx_lo_t ) ) ) == NULL )
{
return -ODBX_ERR_NOMEM;
}
if( ( oralob = (struct oralob*) malloc( sizeof( struct oralob ) ) ) == NULL )
{
free( *lo );
*lo = NULL;
return -ODBX_ERR_NOMEM;
}
oralob->lob = (OCILobLocator*) value;
oralob->rpiece = OCI_FIRST_PIECE;
oralob->wpiece = OCI_FIRST_PIECE;
(*lo)->result = result;
(*lo)->generic = (void*) oralob;
if( ( conn->errcode = OCILobOpen( conn->ctx, conn->err, (OCILobLocator*) value, OCI_LOB_READONLY ) ) != OCI_SUCCESS ) // OCI_LOB_READWRITE
{
free( (*lo)->generic );
(*lo)->generic = NULL;
free( *lo );
*lo = NULL;
return -ODBX_ERR_BACKEND;
}
return ODBX_ERR_SUCCESS;
}
static int oracle_odbx_lo_close( odbx_lo_t* lo )
{
if( lo->result == NULL || lo->result->handle == NULL || lo->result->handle->aux == NULL )
{
return ODBX_ERR_HANDLE;
}
struct oraconn* conn = (struct oraconn*) lo->result->handle->aux;
struct oralob* oralob = (struct oralob*) lo->generic;
if( oralob->wpiece == OCI_NEXT_PIECE )
{
oraub8 blen = 0;
oraub8 clen = 0;
int buffer = 0;
if( ( conn->errcode = OCILobWrite2( conn->ctx, conn->err, lo->generic, &blen, &clen, 1, (dvoid*) &buffer, 0, OCI_LAST_PIECE, NULL, NULL, 0, SQLCS_IMPLICIT ) ) != OCI_SUCCESS )
{
return -ODBX_ERR_BACKEND;
}
}
if( ( conn->errcode = OCILobClose( conn->ctx, conn->err, lo->generic ) ) != OCI_SUCCESS )
{
return -ODBX_ERR_BACKEND;
}
free( lo->generic );
lo->generic = NULL;
free( lo );
return ODBX_ERR_SUCCESS;
}
static ssize_t oracle_odbx_lo_read( odbx_lo_t* lo, void* buffer, size_t buflen )
{
oraub8 blen = 0;
oraub8 clen = 0;
struct oraconn* conn = (struct oraconn*) lo->result->handle->aux;
struct oralob* oralob = (struct oralob*) lo->generic;
if( lo->generic == NULL ) { return -ODBX_ERR_HANDLE; }
if( buflen > 0x7FFFFFFF ) { buflen = 0x7FFFFFFF; } // we can only return ssize_t
conn->errcode = OCILobRead2( conn->ctx, conn->err, lo->generic, &blen, &clen, 1, buffer, (oraub8) buflen, oralob->rpiece, NULL, NULL, 0, SQLCS_IMPLICIT );
switch( conn->errcode )
{
case OCI_SUCCESS:
return (ssize_t) 0;
case OCI_NEED_DATA:
oralob->rpiece = OCI_NEXT_PIECE;
return (ssize_t) blen;
}
return -ODBX_ERR_BACKEND;
}
static ssize_t oracle_odbx_lo_write( odbx_lo_t* lo, void* buffer, size_t buflen )
{
oraub8 blen = 0;
oraub8 clen = 0;
struct oraconn* conn = (struct oraconn*) lo->result->handle->aux;
struct oralob* oralob = (struct oralob*) lo->generic;
if( lo->generic == NULL ) { return -ODBX_ERR_HANDLE; }
if( buflen > 0x7FFFFFFF ) { buflen = 0x7FFFFFFF; } // we can only return ssize_t
if( oralob->wpiece == OCI_FIRST_PIECE )
{
if( ( conn->errcode = OCILobTrim2( conn->ctx, conn->err, lo->generic, 0 ) ) != OCI_SUCCESS )
{
return -ODBX_ERR_BACKEND;
}
}
conn->errcode = OCILobWrite2( conn->ctx, conn->err, lo->generic, &blen, &clen, 1, buffer, (oraub8) buflen, oralob->wpiece, NULL, NULL, 0, SQLCS_IMPLICIT );
switch( conn->errcode )
{
case OCI_SUCCESS:
case OCI_NEED_DATA:
oralob->wpiece = OCI_NEXT_PIECE;
return (ssize_t) blen;
}
return -ODBX_ERR_BACKEND;
}
#endif
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