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OdbcStatement.cpp
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/*
*
* The contents of this file are subject to the Initial
* Developer's Public License Version 1.0 (the "License");
* you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
*
* Software distributed under the License is distributed on
* an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
* express or implied. See the License for the specific
* language governing rights and limitations under the License.
*
*
* The Original Code was created by James A. Starkey
*
* Copyright (c) 1999, 2000, 2001 James A. Starkey
* All Rights Reserved.
*
*
* Changes
* 2003-03-24 OdbcStatement.cpp
* Contributed by Norbert Meyer
* o In sqlExtendedFetch() add support for
* applications which only check rowCountPointer
* o In setValue()
* Empty strings have len = 0, so test for that
* o In setParameter() and executeStatement()
* test for binding->indicatorPointer
*
* 2003-03-24 OdbcStatement.cpp
* Contributed by Carlos Guzman Alvarez
* Remove updatePreparedResultSet from OdbStatement
* and achieve the same goal in another way.
*
* 2003-03-24 OdbcStatement.cpp
* Contributed by Roger Gammans
* Fix a segv in SQLBindCol()
*
* 2002-11-21 OdbcStatement.cpp
* Contributed by C. G. Alvarez
* Improved handling of TIME datatype
*
* 2002-11-21 OdbcStatement.cpp
* Contributed by C. G. Alvarez
* Modification to OdbcStatement::sqlExtendedFetch
* to support SQL_API_SQLEXTENDEDFETCH
*
* 2002-10-11 OdbcStatement.cpp
* Contributed by C. G. Alvarez
* Extensive modifications to blob reading and writing
*
* 2002-10-11 OdbcStatement.cpp
* Contributed by C. G. Alvarez
* Added sqlNumParams()
*
* 2002-08-14 OdbcStatement.cpp
* Contributed by C. G. Alvarez
* Minor enhancements to sqlGetSmtAttr and sqlSetStmtAttr.
*
*
* 2002-08-12 OdbcStatement.cpp
* Added changes from C. G. Alvarez to so that
* sqlColAttributes() called with SQL_COLUMN_TYPE_NAME returns
* the name of the type instead of the number of the type.
* Similarly, sqlColAttribute() will return string for
* SQL_DESC_TYPE_NAME.
*
* Added sqlTablePrivileges()
*
*
* 2002-07-08 OdbcStatement.cpp
* Added changes from C. G. Alvarez to return
* SQL_DESC_UNNAMED and SQL_DESC_BASE_TABLE_NAME
* from sqlColAtrributes()
*
* 2002-06-26 OdbcStatement.cpp
* Added changes from C. G. Alvarez to provide
* better support for remote views.
*
* 2002-06-26 OdbcStatement::OdbcStatement
* Initialised numberColumns in constructor (Roger Gammans)
*
* 2002-06-17 OdbcStatement::setParameter()
* Submitted by C. G. Alvarez
* Added code to handle returning strings that are not
* null terminated.
*
* 2002-06-08 OdbcStatement.cpp
* Submitted by B. Schulte
* sqlNumResultCols().
* This fixes the bug : ' I can't edit my remote-views
* in Visual FoxPro'. If the resultSet does not exist,
* execute it, to get a valid resultSet. Foxpro calls
* this function to get all column-descriptions for
* its remote-views.
*
* 2002-06-04 OdbcdStatement.cpp
* submitted by Robert Milharcic
* Extensive changes to improve writing and
* retrieval of binary blobs
*
* 2002-05-20 Updated OdbcStatement.cpp
*
* Contributed by Pier Alberto GUIDOTTI
* o Use RM's changes to support reading
* text blobs too.
*
* 2002-05-20 Updated OdbcStatement.cpp
*
* Contributed by Robert Milharcic
* o Several changes to allow reading of binary blobs
* See code commented with //Added by RM or //From RM
*
*
* 2002-05-20 Updated OdbcStatement.cpp
*
* Contributed by Bernhard Schulte
* o Use TimeStamp instead of DateTime in setParameter().
*
*
*/
// OdbcStatement.cpp: implementation of the OdbcStatement class.
//
//////////////////////////////////////////////////////////////////////
#ifndef _WINDOWS
#include <wchar.h>
#endif
#include <memory.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "IscDbc/Connection.h"
#include "IscDbc/SQLException.h"
#include "OdbcEnv.h"
#include "OdbcConnection.h"
#include "OdbcStatement.h"
#include "OdbcError.h"
#include "DescRecord.h"
#ifdef DEBUG
#define TRACE(msg) OutputDebugString(#msg"\n");
#define TRACE02(msg,val) TraceOutput(#msg,val)
#else
#define TRACE(msg)
#define TRACE02(msg,val)
#endif
namespace OdbcJdbcLibrary {
using namespace IscDbcLibrary;
void TraceOutput(char * msg, intptr_t val)
{
char buf[80];
sprintf( buf, "\t%s = %ld : %p\n", msg, val, (void*)val );
OutputDebugString(buf);
}
// Bound Address + Binding Offset + ((Row Number – 1) x Element Size)
// *ptr = binding->pointer + bindOffsetPtr + ((1 – 1) * rowBindType); // <-- for single row
#define GETBOUNDADDRESS(binding) ( (uintptr_t)binding->dataPtr + ( applicationParamDescriptor->headBindType ? (uintptr_t)bindOffsetPtr : 0 ) );
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
OdbcStatement::OdbcStatement(OdbcConnection *connect, int statementNumber)
{
connection = connect;
resultSet = NULL;
statement = connection->connection->createInternalStatement();
bulkInsert = NULL;
execute = &OdbcStatement::executeStatement;
fetchNext = &ResultSet::nextFetch;
schemaFetchData = true;
metaData = NULL;
cancel = false;
countFetched = 0l;
enFetch = NoneFetch;
parameterNeedData = 0;
maxRows = 0;
maxLength = 0;
applicationRowDescriptor = connection->allocDescriptor (odtApplicationRow);
saveApplicationRowDescriptor = applicationRowDescriptor;
applicationParamDescriptor = connection->allocDescriptor (odtApplicationParameter);
saveApplicationParamDescriptor = applicationParamDescriptor;
implementationRowDescriptor = connection->allocDescriptor (odtImplementationRow);
implementationParamDescriptor = connection->allocDescriptor (odtImplementationParameter);
implementationGetDataDescriptor = NULL;
fetchRetData = SQL_RD_ON;
sqldataOutOffsetPtr = NULL;
numberColumns = 0;
rowNumberParamArray = 0;
registrationOutParameter = false;
isRegistrationOutParameter = false;
isResultSetFromSystemCatalog = false;
isFetchStaticCursor = false;
currency = SQL_CONCUR_READ_ONLY;
cursorType = SQL_CURSOR_FORWARD_ONLY;
cursorName.Format ("SQL_CUR%d", statementNumber);
setPreCursorName = false;
cursorScrollable = SQL_NONSCROLLABLE;
asyncEnable = false;
enableAutoIPD = SQL_TRUE;
useBookmarks = SQL_UB_OFF;
cursorSensitivity = SQL_INSENSITIVE;
fetchBookmarkPtr = NULL;
noscanSQL = SQL_NOSCAN_OFF;
bindOffsetColumnWiseBinding = 0;
bindOffsetIndColumnWiseBinding = 0;
listBindIn = new ListBindColumn;
convert = new OdbcConvert(this);
listBindOut = new ListBindColumn;
listBindGetData = NULL;
}
OdbcStatement::~OdbcStatement()
{
releaseBindings();
releaseParameters();
try
{
releaseStatement();
}
catch ( std::exception ) { }
statement->release();
delete applicationRowDescriptor;
delete applicationParamDescriptor;
delete implementationRowDescriptor;
delete implementationParamDescriptor;
delete implementationGetDataDescriptor;
delete convert;
delete listBindIn;
delete listBindOut;
delete listBindGetData;
connection->statementDeleted (this);
delete bulkInsert;
}
OdbcConnection* OdbcStatement::getConnection()
{
return connection;
}
OdbcObjectType OdbcStatement::getType()
{
return odbcTypeStatement;
}
inline StatementMetaData* OdbcStatement::getStatementMetaDataIRD()
{
return resultSet ? resultSet->getMetaData() : statement->getStatementMetaDataIRD();
}
inline void OdbcStatement::clearErrors()
{
if ( infoPosted )
OdbcObject::clearErrors();
}
SQLRETURN OdbcStatement::sqlTables(SQLCHAR * catalog, int catLength,
SQLCHAR * schema, int schemaLength,
SQLCHAR * table, int tableLength,
SQLCHAR * type, int typeLength)
{
clearErrors();
releaseStatement();
char temp [1024], *p = temp;
const char *cat = getString (&p, catalog, catLength, NULL);
const char *scheme = getString (&p, schema, schemaLength, NULL);
const char *tbl = getString (&p, table, tableLength, NULL);
const char *typeString = getString (&p, type, typeLength, "");
const char *typeVector [16];
int numberTypes = 0;
for (const char *q = typeString; *q && numberTypes < 16;)
if (*q == ' ')
++q;
else
{
typeVector [numberTypes++] = p;
if (*q == '\'')
{
for (++q; *q && *q++ != '\'';)
*p++ = q [-1];
while (*q && *q++ != ',')
;
}
else
for (char c; *q && (c = *q++) != ',';)
*p++ = c;
*p++ = 0;
}
try
{
DatabaseMetaData *metaData = connection->getMetaData();
setResultSet (metaData->getTables (cat, scheme, tbl, numberTypes, typeVector));
}
catch ( std::exception &ex )
{
SQLException &exception = (SQLException&)ex;
postError ("HY000", exception);
return SQL_ERROR;
}
return sqlSuccess();
}
SQLRETURN OdbcStatement::sqlTablePrivileges(SQLCHAR * catalog, int catLength,
SQLCHAR * schema, int schemaLength,
SQLCHAR * table, int tableLength)
{
clearErrors();
releaseStatement();
char temp [1024], *p = temp;
const char *cat = getString (&p, catalog, catLength, NULL);
const char *scheme = getString (&p, schema, schemaLength, NULL);
const char *tbl = getString (&p, table, tableLength, NULL);
try
{
DatabaseMetaData *metaData = connection->getMetaData();
setResultSet (metaData->getTablePrivileges (cat, scheme, tbl));
}
catch ( std::exception &ex )
{
SQLException &exception = (SQLException&)ex;
postError ("HY000", exception);
return SQL_ERROR;
}
return sqlSuccess();
}
SQLRETURN OdbcStatement::sqlColumnPrivileges(SQLCHAR * catalog, int catLength,
SQLCHAR * schema, int schemaLength,
SQLCHAR * table, int tableLength,
SQLCHAR * column, int columnLength)
{
clearErrors();
releaseStatement();
char temp [1024], *p = temp;
const char *cat = getString (&p, catalog, catLength, NULL);
const char *scheme = getString (&p, schema, schemaLength, NULL);
const char *tbl = getString (&p, table, tableLength, NULL);
const char *col = getString (&p, column, columnLength, NULL);
try
{
DatabaseMetaData *metaData = connection->getMetaData();
setResultSet (metaData->getColumnPrivileges (cat, scheme, tbl, col));
}
catch ( std::exception &ex )
{
SQLException &exception = (SQLException&)ex;
postError ("HY000", exception);
return SQL_ERROR;
}
return sqlSuccess();
}
SQLRETURN OdbcStatement::sqlPrepare(SQLCHAR * sql, int sqlLength)
{
clearErrors();
releaseStatement();
int retNativeSQL = 0;
JString temp, tempNative;
const char *string = (const char*) sql;
if (sqlLength != SQL_NTS)
{
temp = JString ((const char*) sql, sqlLength);
string = temp;
}
#ifdef DEBUG
{
char tempDebugStr [8196];
sprintf (tempDebugStr, "Preparing statement:\n\t%.8170s\n", string);
OutputDebugString (tempDebugStr);
}
#endif
try
{
if ( noscanSQL == SQL_NOSCAN_OFF )
{
int lenstrSQL = (int)strlen(string);
int lennewstrSQL = lenstrSQL + 4096;
retNativeSQL = connection->connection->getNativeSql( string, lenstrSQL, tempNative. getBuffer( lennewstrSQL ), lennewstrSQL, &lenstrSQL );
if ( retNativeSQL > 0 )
{
retNativeSQL = 0;
string = tempNative;
}
}
#ifdef DEBUG
{
char tempDebugStr [8196];
sprintf (tempDebugStr, "Preparing statement:\n\t%.8170s\n", string);
OutputDebugString (tempDebugStr);
}
#endif
sqlPrepareString = string;
implementationParamDescriptor->releasePrepared();
if ( !retNativeSQL )
{
statement->prepareStatement (string);
if ( statement->isActiveSelect() )
execute = &OdbcStatement::executeStatement;
else if ( statement->isActiveProcedure() )
execute = &OdbcStatement::executeProcedure;
else if ( statement->isActiveModify() && applicationParamDescriptor->headArraySize > 1 )
execute = &OdbcStatement::executeStatementParamArray;
else
execute = &OdbcStatement::executeStatement;
registrationOutParameter = false;
listBindIn->removeAll();
listBindOut->removeAll();
implementationRowDescriptor->setDefaultImplDesc (statement->getStatementMetaDataIRD());
implementationParamDescriptor->setDefaultImplDesc (statement->getStatementMetaDataIRD(), statement->getStatementMetaDataIPD());
applicationRowDescriptor->clearPrepared();
rebindColumn();
numberColumns = statement->getStatementMetaDataIRD()->getColumnCount();
implementationParamDescriptor->updateDefinedIn();
applicationParamDescriptor->clearPrepared();
if ( enableAutoIPD == SQL_TRUE )
rebindParam();
}
else
{
switch ( retNativeSQL )
{
case -1: // replace commit
execute = &OdbcStatement::executeCommit;
break;
case -2: // replace rollback
execute = &OdbcStatement::executeRollback;
break;
case -3: // create database
execute = &OdbcStatement::executeCreateDatabase;
break;
case -4: // use local statement param Transaction
statement->setActiveLocalParamTransaction();
execute = &OdbcStatement::executeNone;
break;
case -7: // declare local statement param Transaction
statement->declareLocalParamTransaction();
execute = &OdbcStatement::executeNone;
break;
case -5: // use connect param Transaction
case -6: // use all connections param Transaction
statement->delActiveLocalParamTransaction();
execute = &OdbcStatement::executeNone;
break;
}
}
}
catch ( std::exception &ex )
{
SQLException &exception = (SQLException&)ex;
postError ("HY000", exception);
return SQL_ERROR;
}
return sqlSuccess();
}
void OdbcStatement::releaseStatement()
{
eof = false;
cancel = false;
numberColumns = 0;
releaseResultSet();
statement->drop();
}
void OdbcStatement::releaseResultSet()
{
if (resultSet)
{
resultSet->release();
resultSet = NULL;
metaData = NULL;
sqldataOutOffsetPtr = NULL;
implementationRowDescriptor->clearDefined();
implementationParamDescriptor->clearDefined();
}
lastRowsetSize = 0;
countFetched = 0;
isResultSetFromSystemCatalog = false;
if ( implementationGetDataDescriptor )
{
delete implementationGetDataDescriptor;
implementationGetDataDescriptor = NULL;
delete listBindGetData;
listBindGetData = NULL;
}
if ( bulkInsert )
{
delete bulkInsert;
bulkInsert = NULL;
}
}
void OdbcStatement::setResultSet(ResultSet * results, bool fromSystemCatalog)
{
execute = &OdbcStatement::executeStatement;
fetchNext = &ResultSet::nextFetch;
resultSet = results;
isResultSetFromSystemCatalog = fromSystemCatalog;
metaData = resultSet->getMetaData();
sqldataOutOffsetPtr = (SQLLEN*) resultSet->getSqlDataOffsetPtr();
if ( !statement->isActive() )
{
listBindOut->removeAll();
implementationRowDescriptor->setDefaultImplDesc (metaData);
applicationRowDescriptor->clearPrepared();
rebindColumn();
}
else
implementationRowDescriptor->updateDefinedOut();
convert->setBindOffsetPtrFrom(sqldataOutOffsetPtr, NULL);
numberColumns = resultSet->getColumnCount();
enFetch = NoneFetch;
eof = false;
cancel = false;
countFetched = 0;
rowNumber = 0;
indicatorRowNumber = 0;
lastRowsetSize = 0;
rowNumberParamArray = 0;
if ( fromSystemCatalog )
{
setCursorRowCount(resultSet->getCountRowsStaticCursor());
}
}
void OdbcStatement::rebindColumn()
{
if ( !implementationRowDescriptor->headCount )
return;
int nCount = implementationRowDescriptor->headCount;
int nCountApp = applicationRowDescriptor->headCount;
DescRecord * record = applicationRowDescriptor->getDescRecord (0);
if ( !record->isPrepared && record->isDefined )
{ // set column 0
DescRecord *imprec = implementationRowDescriptor->getDescRecord (0);
imprec->dataPtr = &rowNumber;
imprec->indicatorPtr = &indicatorRowNumber;
record->initZeroColumn();
bindOutputColumn ( 0, record );
}
for (int column = 1, columnApp = 1; column <= nCount && columnApp <= nCountApp; ++column, ++columnApp)
{
record = applicationRowDescriptor->getDescRecord ( columnApp );
if ( !record->isPrepared && record->isDefined )
{
SQLINTEGER bufferLength = record->length;
bindOutputColumn ( columnApp, record);
record->length = bufferLength;
}
}
}
void OdbcStatement::addBindColumn(int column, DescRecord * recordFrom, DescRecord * recordTo)
{
CBindColumn bindCol(column, recordFrom, recordTo);
int j = listBindOut->SearchAndInsert( &bindCol );
if( j < 0 )
(*listBindOut)[~j] = bindCol;
else
(*listBindOut)[j] = bindCol;
}
void OdbcStatement::delBindColumn(int column)
{
}
SQLRETURN OdbcStatement::sqlBindCol(int column, int targetType, SQLPOINTER targetValuePtr, SQLLEN bufferLength, SQLLEN * indPtr)
{
clearErrors();
if (column < 0)
return sqlReturn (SQL_ERROR, "07009", "Invalid descriptor index");
try
{
switch (targetType)
{
case SQL_C_CHAR:
case SQL_C_WCHAR:
case SQL_C_SHORT:
case SQL_C_SSHORT:
case SQL_C_USHORT:
case SQL_C_LONG:
case SQL_C_SLONG:
case SQL_C_ULONG: // case SQL_C_BOOKMARK:
case SQL_C_FLOAT:
case SQL_C_DOUBLE:
case SQL_C_BIT:
case SQL_C_TINYINT:
case SQL_C_STINYINT:
case SQL_C_UTINYINT:
case SQL_C_SBIGINT:
case SQL_C_UBIGINT:
case SQL_C_BINARY: // case SQL_C_VARBOOKMARK:
case SQL_C_DATE:
case SQL_C_TIME:
case SQL_C_TIMESTAMP:
case SQL_C_NUMERIC:
case SQL_DECIMAL:
case SQL_TYPE_DATE:
case SQL_TYPE_TIME:
case SQL_TYPE_TIMESTAMP:
case SQL_C_DEFAULT:
case SQL_C_INTERVAL_YEAR:
case SQL_C_INTERVAL_MONTH:
case SQL_C_INTERVAL_DAY:
case SQL_C_INTERVAL_HOUR:
case SQL_C_INTERVAL_MINUTE:
case SQL_C_INTERVAL_SECOND:
case SQL_C_INTERVAL_YEAR_TO_MONTH:
case SQL_C_INTERVAL_DAY_TO_HOUR:
case SQL_C_INTERVAL_DAY_TO_MINUTE:
case SQL_C_INTERVAL_DAY_TO_SECOND:
case SQL_C_INTERVAL_HOUR_TO_MINUTE:
case SQL_C_INTERVAL_HOUR_TO_SECOND:
case SQL_C_INTERVAL_MINUTE_TO_SECOND:
case SQL_C_GUID:
break;
default:
{
JString msg;
msg.Format ("Invalid application buffer type (%d)", targetType);
LOG_MSG ((const char*) msg);
LOG_MSG ("\n");
return sqlReturn( SQL_ERROR, "HY003", (const char*)msg );
}
}
DescRecord *record = applicationRowDescriptor->getDescRecord (column);
record->parameterType = SQL_PARAM_OUTPUT;
record->type = targetType;
record->conciseType = targetType;
record->dataPtr = targetValuePtr;
record->indicatorPtr = indPtr;
record->length = bufferLength;
record->scale = 0;
record->isDefined = true;
record->isPrepared = false;
record->sizeColumnExtendedFetch = bufferLength;
if ( implementationRowDescriptor->isDefined() )
{
if ( column > implementationRowDescriptor->headCount )
return sqlReturn (SQL_ERROR, "07009", "Invalid descriptor index");
if ( !column )
{
DescRecord *imprec = implementationRowDescriptor->getDescRecord (column);
imprec->dataPtr = &rowNumber;
imprec->indicatorPtr = &indicatorRowNumber;
record->initZeroColumn();
}
bindOutputColumn ( column, record);
record->length = bufferLength;
}
if ( bulkInsert )
{
delete bulkInsert;
bulkInsert = NULL;
}
}
catch ( std::exception &ex )
{
SQLException &exception = (SQLException&)ex;
postError ("HY000", exception);
return SQL_ERROR;
}
return sqlSuccess();
}
inline
void OdbcStatement::setZeroColumn(int column)
{
CBindColumn * bindCol = listBindOut->GetHeadPosition();
if ( bindCol && !bindCol->column )
convert->setZeroColumn(bindCol->appRecord, column);
}
inline
SQLRETURN OdbcStatement::fetchData()
{
SQLULEN rowCount = 0;
SQLULEN *rowCountPt = implementationRowDescriptor->headRowsProcessedPtr ? implementationRowDescriptor->headRowsProcessedPtr
: &rowCount;
SQLUSMALLINT *statusPtr = implementationRowDescriptor->headArrayStatusPtr ? implementationRowDescriptor->headArrayStatusPtr
: NULL;
int nCountRow = applicationRowDescriptor->headArraySize;
SQLLEN *&bindOffsetPtr = applicationRowDescriptor->headBindOffsetPtr;
SQLLEN *bindOffsetPtrSave = bindOffsetPtr;
try
{
int nRow = 0;
if ( !eof )
{
int rowBindType = applicationRowDescriptor->headBindType;
SQLLEN bindOffsetPtrTmp = bindOffsetPtr ? *bindOffsetPtr : 0;
bindOffsetPtr = &bindOffsetPtrTmp;
if ( schemaFetchData )
{
convert->setBindOffsetPtrTo(bindOffsetPtr, bindOffsetPtr);
while ( nRow < nCountRow && (resultSet->*fetchNext)() )
{
++countFetched;
++rowNumber; // Should stand only here!!!
if ( fetchRetData == SQL_RD_ON )
returnData();
bindOffsetPtrTmp += rowBindType;
++nRow;
if (maxRows && nRow == maxRows)
break;
}
if ( statusPtr && nRow )
memset(statusPtr, SQL_ROW_SUCCESS, sizeof(*statusPtr) * nRow);
}
else // if ( schemaExtendedFetchData )
{
SQLLEN bindOffsetPtrData = 0;
SQLLEN bindOffsetPtrInd = 0;
convert->setBindOffsetPtrTo(&bindOffsetPtrData, &bindOffsetPtrInd);
while ( nRow < nCountRow && (resultSet->*fetchNext)() )
{
++countFetched;
++rowNumber; // Should stand only here!!!
if ( fetchRetData == SQL_RD_ON )
returnDataFromExtendedFetch();
bindOffsetPtrInd += sizeof(SQLLEN);
++bindOffsetPtrTmp;
++nRow;
if ( maxRows && nRow == maxRows )
break;
}
if ( statusPtr && nRow )
memset(statusPtr, SQL_ROW_SUCCESS, sizeof(*statusPtr) * nRow);
}
*rowCountPt = nRow;
setZeroColumn(rowNumber);
bindOffsetPtr = bindOffsetPtrSave;
if( !nRow || nRow < nCountRow )
{
eof = true;
if( nRow && statusPtr )
{
SQLUSMALLINT * pt = statusPtr + nRow;
SQLUSMALLINT * ptEnd = statusPtr + nCountRow;
while ( pt < ptEnd )
*pt++ = SQL_ROW_NOROW;
}
else if ( !nRow )
return SQL_NO_DATA;
}
}
else
{
*rowCountPt = 0;
return SQL_NO_DATA;
}
}
catch ( std::exception &ex )
{
SQLException &exception = (SQLException&)ex;
bindOffsetPtr = bindOffsetPtrSave;
OdbcError *error = postError ("HY000", exception);
error->setRowNumber (rowNumber);
return SQL_ERROR;
}
return sqlSuccess();
}
SQLRETURN OdbcStatement::sqlFetch()
{
clearErrors();
if (!resultSet)
return sqlReturn (SQL_ERROR, "24000", "Invalid cursor state");
if (cancel)
{
releaseResultSet();
return sqlReturn (SQL_ERROR, "S1008", "Operation canceled");
}
if( enFetch == NoneFetch )
{
enFetch = Fetch;
schemaFetchData = getSchemaFetchData();
rebindColumn();
convert->setBindOffsetPtrFrom(sqldataOutOffsetPtr, NULL);
isFetchStaticCursor = isStaticCursor();
}
if ( isFetchStaticCursor )
return sqlFetchScrollCursorStatic ( SQL_FETCH_NEXT, 1);
return fetchData();
}
#ifdef DEBUG
char *strDebOrientFetch[]=
{
"",
"SQL_FETCH_NEXT",
"SQL_FETCH_FIRST",
"SQL_FETCH_LAST",
"SQL_FETCH_PRIOR",
"SQL_FETCH_ABSOLUTE",
"SQL_FETCH_RELATIVE",
"",
"SQL_FETCH_BOOKMARK",
""
};
#endif
SQLRETURN OdbcStatement::sqlFetchScrollCursorStatic(int orientation, int offset)
{
SQLLEN *&bindOffsetPtr = applicationRowDescriptor->headBindOffsetPtr;
int rowsetSize = applicationRowDescriptor->headArraySize;
bool bFetchAbsolute;
SQLULEN rowCount;
SQLULEN *rowCountPt = implementationRowDescriptor->headRowsProcessedPtr ? implementationRowDescriptor->headRowsProcessedPtr
: &rowCount;
rowNumber = resultSet->getPosRowInSet();
switch(orientation)
{
case SQL_FETCH_RELATIVE:
if ( resultSet->isCurrRowsetStart() )
{
if ( !rowNumber && offset < 0 )
{
resultSet->beforeFirst();
resultSet->setPosRowInSet(0);
return SQL_NO_DATA;
}
int checkRow = rowNumber + offset;
if ( rowNumber > 0 && checkRow < 0 )
{
if ( abs( offset ) > rowsetSize )
{
resultSet->beforeFirst();
resultSet->setPosRowInSet(0);
return SQL_NO_DATA;
}
rowNumber = 0;
postError( "01S06", "Attempt to fetch before the result set returned the first rowset" );
}
else if ( checkRow > sqlDiagCursorRowCount )
{
resultSet->afterLast();
resultSet->setPosRowInSet(sqlDiagCursorRowCount ? sqlDiagCursorRowCount - 1 : 0);
return SQL_NO_DATA;
}
rowNumber = checkRow;
break;
}
bFetchAbsolute = ( resultSet->isBeforeFirst() && offset > 0 ) || ( resultSet->isAfterLast() && offset < 0 );
if ( !bFetchAbsolute )
{
if ( resultSet->isBeforeFirst() )
{
if ( offset <= 0 )
{
resultSet->beforeFirst();
resultSet->setPosRowInSet(0);
return SQL_NO_DATA;
}
}
else if ( resultSet->isAfterLast() )
{
if ( offset >= 0 )
{
resultSet->afterLast();
resultSet->setPosRowInSet(sqlDiagCursorRowCount ? sqlDiagCursorRowCount - 1 : 0);
return SQL_NO_DATA;
}
}
rowNumber += offset;
break;
}
case SQL_FETCH_ABSOLUTE:
if ( offset > 0 )
rowNumber = offset - 1;
else if( offset == -1 )
{
rowNumber = sqlDiagCursorRowCount - rowsetSize;
if ( rowNumber < 0 )
rowNumber = 0;
}
else if ( offset < 0 )
{
if( abs(offset) > sqlDiagCursorRowCount )
{
if ( abs(offset) > rowsetSize )
{
resultSet->beforeFirst();
resultSet->setPosRowInSet(0);
return SQL_NO_DATA;
}
rowNumber = 0;
postError( "01S06", "Attempt to fetch before the result set returned the first rowset" );
}
else
rowNumber = sqlDiagCursorRowCount + offset;
}
else if( !offset )
{
resultSet->beforeFirst();
resultSet->setPosRowInSet(0);
return SQL_NO_DATA;
}
else // if( offset > sqlDiagCursorRowCount )
{
resultSet->afterLast();
resultSet->setPosRowInSet(sqlDiagCursorRowCount ? sqlDiagCursorRowCount - 1 : 0);
return SQL_NO_DATA;
}
break;
case SQL_FETCH_NEXT:
if ( eof && rowNumber == sqlDiagCursorRowCount - 1 )
return SQL_NO_DATA;
rowNumber += lastRowsetSize;
break;
case SQL_FETCH_LAST:
if( sqlDiagCursorRowCount )
{