diff options
Diffstat (limited to 'src/sql/drivers/odbc/qsql_odbc.cpp')
-rw-r--r-- | src/sql/drivers/odbc/qsql_odbc.cpp | 2035 |
1 files changed, 2035 insertions, 0 deletions
diff --git a/src/sql/drivers/odbc/qsql_odbc.cpp b/src/sql/drivers/odbc/qsql_odbc.cpp new file mode 100644 index 0000000..b09afd2 --- /dev/null +++ b/src/sql/drivers/odbc/qsql_odbc.cpp @@ -0,0 +1,2035 @@ +/**************************************************************************** +** +** Implementation of ODBC driver classes +** +** Created : 001103 +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the sql module of the Qt GUI Toolkit. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free Qt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.QPL +** included in the packaging of this file. Licensees holding valid Qt +** Commercial licenses may use this file in accordance with the Qt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "qsql_odbc.h" +#include <qsqlrecord.h> + +#if defined (Q_OS_WIN32) +#include <qt_windows.h> +#include <qapplication.h> +#endif +#include <qdatetime.h> +#include <private/qsqlextension_p.h> +#include <private/qinternal_p.h> +#include <stdlib.h> + +// undefine this to prevent initial check of the ODBC driver +#define ODBC_CHECK_DRIVER + +#if defined(Q_ODBC_VERSION_2) +//crude hack to get non-unicode capable driver managers to work +# undef UNICODE +# define SQLTCHAR SQLCHAR +# define SQL_C_WCHAR SQL_C_CHAR +#endif + +// newer platform SDKs use SQLLEN instead of SQLINTEGER +#ifdef SQLLEN +# define QSQLLEN SQLLEN +#else +# define QSQLLEN SQLINTEGER +#endif + +#ifdef SQLULEN +# define QSQLULEN SQLULEN +#else +# define QSQLULEN SQLUINTEGER +#endif + + +static const QSQLLEN COLNAMESIZE = 256; +//Map Qt parameter types to ODBC types +static const SQLSMALLINT qParamType[ 4 ] = { SQL_PARAM_INPUT, SQL_PARAM_INPUT, SQL_PARAM_OUTPUT, SQL_PARAM_INPUT_OUTPUT }; + +class QODBCPrivate +{ +public: + QODBCPrivate() + : hEnv(0), hDbc(0), hStmt(0), useSchema(FALSE) + { + sql_char_type = sql_varchar_type = sql_longvarchar_type = QVariant::CString; + unicode = FALSE; + } + + SQLHANDLE hEnv; + SQLHANDLE hDbc; + SQLHANDLE hStmt; + + bool unicode; + bool useSchema; + QVariant::Type sql_char_type; + QVariant::Type sql_varchar_type; + QVariant::Type sql_longvarchar_type; + + QSqlRecordInfo rInf; + + bool checkDriver() const; + void checkUnicode(); + void checkSchemaUsage(); + bool setConnectionOptions( const QString& connOpts ); + void splitTableQualifier(const QString &qualifier, QString &catalog, + QString &schema, QString &table); +}; + +class QODBCPreparedExtension : public QSqlExtension +{ +public: + QODBCPreparedExtension( QODBCResult * r ) + : result( r ) {} + + bool prepare( const QString& query ) + { + return result->prepare( query ); + } + + bool exec() + { + return result->exec(); + } + + QODBCResult * result; +}; + +QPtrDict<QSqlOpenExtension> *qSqlOpenExtDict(); + +class QODBCOpenExtension : public QSqlOpenExtension +{ +public: + QODBCOpenExtension( QODBCDriver *dri ) + : QSqlOpenExtension(), driver(dri) {} + ~QODBCOpenExtension() {} + + bool open( const QString& db, + const QString& user, + const QString& password, + const QString& host, + int port, + const QString& connOpts ); +private: + QODBCDriver *driver; +}; + +bool QODBCOpenExtension::open( const QString& db, + const QString& user, + const QString& password, + const QString& host, + int port, + const QString& connOpts ) +{ + return driver->open( db, user, password, host, port, connOpts ); +} + +static QString qWarnODBCHandle(int handleType, SQLHANDLE handle) +{ + SQLINTEGER nativeCode_; + SQLSMALLINT msgLen; + SQLRETURN r = SQL_ERROR; + SQLTCHAR state_[SQL_SQLSTATE_SIZE+1]; + SQLTCHAR description_[SQL_MAX_MESSAGE_LENGTH]; + r = SQLGetDiagRec( handleType, + handle, + 1, + (SQLTCHAR*)state_, + &nativeCode_, + (SQLTCHAR*)description_, + SQL_MAX_MESSAGE_LENGTH-1, /* in bytes, not in characters */ + &msgLen); + if ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) +#ifdef UNICODE + return QString( (const QChar*)description_, (uint)msgLen ); +#else + return QString::fromLocal8Bit( (const char*)description_ ); +#endif + return QString::null; +} + +static QString qODBCWarn( const QODBCPrivate* odbc) +{ + return ( qWarnODBCHandle( SQL_HANDLE_ENV, odbc->hEnv ) + " " + + qWarnODBCHandle( SQL_HANDLE_DBC, odbc->hDbc ) + " " + + qWarnODBCHandle( SQL_HANDLE_STMT, odbc->hStmt ) ); +} + +static void qSqlWarning( const QString& message, const QODBCPrivate* odbc ) +{ +#ifdef QT_CHECK_RANGE + qWarning( "%s\tError: %s", message.local8Bit().data(), qODBCWarn( odbc ).local8Bit().data() ); +#endif +} + +static QSqlError qMakeError( const QString& err, int type, const QODBCPrivate* p ) +{ + return QSqlError( "QODBC3: " + err, qODBCWarn(p), type ); +} + +static QVariant::Type qDecodeODBCType( SQLSMALLINT sqltype, const QODBCPrivate* p ) +{ + QVariant::Type type = QVariant::Invalid; + switch ( sqltype ) { + case SQL_DECIMAL: + case SQL_NUMERIC: + case SQL_REAL: + case SQL_FLOAT: + case SQL_DOUBLE: + type = QVariant::Double; + break; + case SQL_SMALLINT: + case SQL_INTEGER: + case SQL_BIT: + case SQL_TINYINT: + type = QVariant::Int; + break; + case SQL_BIGINT: + type = QVariant::LongLong; + break; + case SQL_BINARY: + case SQL_VARBINARY: + case SQL_LONGVARBINARY: + type = QVariant::ByteArray; + break; + case SQL_DATE: + case SQL_TYPE_DATE: + type = QVariant::Date; + break; + case SQL_TIME: + case SQL_TYPE_TIME: + type = QVariant::Time; + break; + case SQL_TIMESTAMP: + case SQL_TYPE_TIMESTAMP: + type = QVariant::DateTime; + break; +#ifndef Q_ODBC_VERSION_2 + case SQL_WCHAR: + case SQL_WVARCHAR: + case SQL_WLONGVARCHAR: + type = QVariant::String; + break; +#endif + case SQL_CHAR: + type = p->sql_char_type; + break; + case SQL_VARCHAR: + type = p->sql_varchar_type; + break; + case SQL_LONGVARCHAR: + type = p->sql_longvarchar_type; + break; + default: + type = QVariant::CString; + break; + } + return type; +} + +static QString qGetStringData( SQLHANDLE hStmt, int column, int colSize, bool& isNull, bool unicode = FALSE ) +{ + QString fieldVal; + SQLRETURN r = SQL_ERROR; + QSQLLEN lengthIndicator = 0; + + if ( colSize <= 0 ) { + colSize = 256; + } else if ( colSize > 65536 ) { // limit buffer size to 64 KB + colSize = 65536; + } else { + colSize++; // make sure there is room for more than the 0 termination + if ( unicode ) { + colSize *= 2; // a tiny bit faster, since it saves a SQLGetData() call + } + } + char* buf = new char[ colSize ]; + while ( TRUE ) { + r = SQLGetData( hStmt, + column+1, + unicode ? SQL_C_WCHAR : SQL_C_CHAR, + (SQLPOINTER)buf, + (QSQLLEN)colSize, + &lengthIndicator ); + if ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) { + if ( lengthIndicator == SQL_NULL_DATA || lengthIndicator == SQL_NO_TOTAL ) { + fieldVal = QString::null; + isNull = TRUE; + break; + } + // if SQL_SUCCESS_WITH_INFO is returned, indicating that + // more data can be fetched, the length indicator does NOT + // contain the number of bytes returned - it contains the + // total number of bytes that CAN be fetched + // colSize-1: remove 0 termination when there is more data to fetch + int rSize = (r == SQL_SUCCESS_WITH_INFO) ? (unicode ? colSize-2 : colSize-1) : lengthIndicator; + if ( unicode ) { + fieldVal += QString( (QChar*) buf, rSize / 2 ); + } else { + buf[ rSize ] = 0; + fieldVal += buf; + } + if ( lengthIndicator < colSize ) { + // workaround for Drivermanagers that don't return SQL_NO_DATA + break; + } + } else if ( r == SQL_NO_DATA ) { + break; + } else { +#ifdef QT_CHECK_RANGE + qWarning( "qGetStringData: Error while fetching data (%d)", r ); +#endif + fieldVal = QString::null; + break; + } + } + delete[] buf; + return fieldVal; +} + +static QByteArray qGetBinaryData( SQLHANDLE hStmt, int column, QSQLLEN& lengthIndicator, bool& isNull ) +{ + QByteArray fieldVal; + SQLSMALLINT colNameLen; + SQLSMALLINT colType; + QSQLULEN colSize; + SQLSMALLINT colScale; + SQLSMALLINT nullable; + SQLRETURN r = SQL_ERROR; + + SQLTCHAR colName[COLNAMESIZE]; + r = SQLDescribeCol( hStmt, + column+1, + colName, + COLNAMESIZE, + &colNameLen, + &colType, + &colSize, + &colScale, + &nullable ); +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qWarning( "qGetBinaryData: Unable to describe column %d", column ); +#endif + // SQLDescribeCol may return 0 if size cannot be determined + if (!colSize) { + colSize = 256; + } + if ( colSize > 65536 ) { // read the field in 64 KB chunks + colSize = 65536; + } + char * buf = new char[ colSize ]; + while ( TRUE ) { + r = SQLGetData( hStmt, + column+1, + SQL_C_BINARY, + (SQLPOINTER) buf, + (QSQLLEN)colSize, + &lengthIndicator ); + if ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) { + if ( lengthIndicator == SQL_NULL_DATA ) { + isNull = TRUE; + break; + } else { + int rSize; + r == SQL_SUCCESS ? rSize = lengthIndicator : rSize = colSize; + if ( lengthIndicator == SQL_NO_TOTAL ) { // size cannot be determined + rSize = colSize; + } + // NB! This is not a memleak - the mem will be deleted by QByteArray when + // no longer ref'd + char * tmp = (char *) malloc( rSize + fieldVal.size() ); + if ( fieldVal.size() ) { + memcpy( tmp, fieldVal.data(), fieldVal.size() ); + } + memcpy( tmp + fieldVal.size(), buf, rSize ); + fieldVal = fieldVal.assign( tmp, fieldVal.size() + rSize ); + + if ( r == SQL_SUCCESS ) { // the whole field was read in one chunk + break; + } + } + } else { + break; + } + } + delete [] buf; + return fieldVal; +} + +static int qGetIntData( SQLHANDLE hStmt, int column, bool& isNull ) +{ + QSQLLEN intbuf = 0; + isNull = FALSE; + QSQLLEN lengthIndicator = 0; + SQLRETURN r = SQLGetData( hStmt, + column+1, + SQL_C_SLONG, + (SQLPOINTER)&intbuf, + (QSQLLEN)0, + &lengthIndicator ); + if ( ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) || lengthIndicator == SQL_NULL_DATA ) { + isNull = TRUE; + return 0; + } + return (int)intbuf; +} + +static double qGetDoubleData( SQLHANDLE hStmt, int column, bool& isNull ) +{ + SQLDOUBLE dblbuf; + QSQLLEN lengthIndicator = 0; + isNull = FALSE; + SQLRETURN r = SQLGetData( hStmt, + column+1, + SQL_C_DOUBLE, + (SQLPOINTER)&dblbuf, + (QSQLLEN)0, + &lengthIndicator ); + if ( ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) || lengthIndicator == SQL_NULL_DATA ) { + isNull = TRUE; + return 0.0; + } + + return (double) dblbuf; +} + +static SQLBIGINT qGetBigIntData( SQLHANDLE hStmt, int column, bool& isNull ) +{ + SQLBIGINT lngbuf = Q_INT64_C( 0 ); + isNull = FALSE; + QSQLLEN lengthIndicator = 0; + SQLRETURN r = SQLGetData( hStmt, + column+1, + SQL_C_SBIGINT, + (SQLPOINTER) &lngbuf, + (QSQLLEN)0, + &lengthIndicator ); + if ( ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) || lengthIndicator == SQL_NULL_DATA ) + isNull = TRUE; + + return lngbuf; +} + +// creates a QSqlFieldInfo from a valid hStmt generated +// by SQLColumns. The hStmt has to point to a valid position. +static QSqlFieldInfo qMakeFieldInfo( const SQLHANDLE hStmt, const QODBCPrivate* p ) +{ + bool isNull; + QString fname = qGetStringData( hStmt, 3, -1, isNull, p->unicode ); + int type = qGetIntData( hStmt, 4, isNull ); // column type + int required = qGetIntData( hStmt, 10, isNull ); // nullable-flag + // required can be SQL_NO_NULLS, SQL_NULLABLE or SQL_NULLABLE_UNKNOWN + if ( required == SQL_NO_NULLS ) { + required = 1; + } else if ( required == SQL_NULLABLE ) { + required = 0; + } else { + required = -1; + } + int size = qGetIntData( hStmt, 6, isNull ); // column size + int prec = qGetIntData( hStmt, 8, isNull ); // precision + return QSqlFieldInfo( fname, qDecodeODBCType( type, p ), required, size, prec, QVariant(), type ); +} + +static QSqlFieldInfo qMakeFieldInfo( const QODBCPrivate* p, int i ) +{ + SQLSMALLINT colNameLen; + SQLSMALLINT colType; + QSQLULEN colSize; + SQLSMALLINT colScale; + SQLSMALLINT nullable; + SQLRETURN r = SQL_ERROR; + SQLTCHAR colName[ COLNAMESIZE ]; + r = SQLDescribeCol( p->hStmt, + i+1, + colName, + (QSQLULEN)COLNAMESIZE, + &colNameLen, + &colType, + &colSize, + &colScale, + &nullable); + + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( QString("qMakeField: Unable to describe column %1").arg(i), p ); +#endif + return QSqlFieldInfo(); + } +#ifdef UNICODE + QString qColName( (const QChar*)colName, (uint)colNameLen ); +#else + QString qColName = QString::fromLocal8Bit( (const char*)colName ); +#endif + // nullable can be SQL_NO_NULLS, SQL_NULLABLE or SQL_NULLABLE_UNKNOWN + int required = -1; + if ( nullable == SQL_NO_NULLS ) { + required = 1; + } else if ( nullable == SQL_NULLABLE ) { + required = 0; + } + QVariant::Type type = qDecodeODBCType( colType, p ); + return QSqlFieldInfo( qColName, + type, + required, + (int)colSize == 0 ? -1 : (int)colSize, + (int)colScale == 0 ? -1 : (int)colScale, + QVariant(), + (int)colType ); +} + +bool QODBCPrivate::setConnectionOptions( const QString& connOpts ) +{ + // Set any connection attributes + QStringList raw = QStringList::split( ';', connOpts ); + QStringList opts; + SQLRETURN r = SQL_SUCCESS; + QMap<QString, QString> connMap; + for ( QStringList::ConstIterator it = raw.begin(); it != raw.end(); ++it ) { + QString tmp( *it ); + int idx; + if ( (idx = tmp.find( '=' )) != -1 ) + connMap[ tmp.left( idx ) ] = tmp.mid( idx + 1 ).simplifyWhiteSpace(); + else + qWarning( "QODBCDriver::open: Illegal connect option value '%s'", tmp.latin1() ); + } + if ( connMap.count() ) { + QMap<QString, QString>::ConstIterator it; + QString opt, val; + SQLUINTEGER v = 0; + for ( it = connMap.begin(); it != connMap.end(); ++it ) { + opt = it.key().upper(); + val = it.data().upper(); + r = SQL_SUCCESS; + if ( opt == "SQL_ATTR_ACCESS_MODE" ) { + if ( val == "SQL_MODE_READ_ONLY" ) { + v = SQL_MODE_READ_ONLY; + } else if ( val == "SQL_MODE_READ_WRITE" ) { + v = SQL_MODE_READ_WRITE; + } else { + qWarning( QString( "QODBCDriver::open: Unknown option value '%1'" ).arg( *it ) ); + break; + } + r = SQLSetConnectAttr( hDbc, SQL_ATTR_ACCESS_MODE, (SQLPOINTER) v, 0 ); + } else if ( opt == "SQL_ATTR_CONNECTION_TIMEOUT" ) { + v = val.toUInt(); + r = SQLSetConnectAttr( hDbc, SQL_ATTR_CONNECTION_TIMEOUT, (SQLPOINTER) v, 0 ); + } else if ( opt == "SQL_ATTR_LOGIN_TIMEOUT" ) { + v = val.toUInt(); + r = SQLSetConnectAttr( hDbc, SQL_ATTR_LOGIN_TIMEOUT, (SQLPOINTER) v, 0 ); + } else if ( opt == "SQL_ATTR_CURRENT_CATALOG" ) { + val.ucs2(); // 0 terminate + r = SQLSetConnectAttr( hDbc, SQL_ATTR_CURRENT_CATALOG, +#ifdef UNICODE + (SQLWCHAR*) val.unicode(), +#else + (SQLCHAR*) val.latin1(), +#endif + SQL_NTS ); + } else if ( opt == "SQL_ATTR_METADATA_ID" ) { + if ( val == "SQL_TRUE" ) { + v = SQL_TRUE; + } else if ( val == "SQL_FALSE" ) { + v = SQL_FALSE; + } else { + qWarning( QString( "QODBCDriver::open: Unknown option value '%1'" ).arg( *it ) ); + break; + } + r = SQLSetConnectAttr( hDbc, SQL_ATTR_METADATA_ID, (SQLPOINTER) v, 0 ); + } else if ( opt == "SQL_ATTR_PACKET_SIZE" ) { + v = val.toUInt(); + r = SQLSetConnectAttr( hDbc, SQL_ATTR_PACKET_SIZE, (SQLPOINTER) v, 0 ); + } else if ( opt == "SQL_ATTR_TRACEFILE" ) { + val.ucs2(); // 0 terminate + r = SQLSetConnectAttr( hDbc, SQL_ATTR_TRACEFILE, +#ifdef UNICODE + (SQLWCHAR*) val.unicode(), +#else + (SQLCHAR*) val.latin1(), +#endif + SQL_NTS ); + } else if ( opt == "SQL_ATTR_TRACE" ) { + if ( val == "SQL_OPT_TRACE_OFF" ) { + v = SQL_OPT_TRACE_OFF; + } else if ( val == "SQL_OPT_TRACE_ON" ) { + v = SQL_OPT_TRACE_ON; + } else { + qWarning( QString( "QODBCDriver::open: Unknown option value '%1'" ).arg( *it ) ); + break; + } + r = SQLSetConnectAttr( hDbc, SQL_ATTR_TRACE, (SQLPOINTER) v, 0 ); + } +#ifdef QT_CHECK_RANGE + else { + qWarning( QString("QODBCDriver::open: Unknown connection attribute '%1'").arg( opt ) ); + } +#endif + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( QString("QODBCDriver::open: Unable to set connection attribute '%1'").arg( opt ), this ); +#endif + return FALSE; + } + } + } + return TRUE; +} + +void QODBCPrivate::splitTableQualifier(const QString & qualifier, QString &catalog, + QString &schema, QString &table) +{ + if (!useSchema) { + table = qualifier; + return; + } + QStringList l = QStringList::split( ".", qualifier, TRUE ); + if ( l.count() > 3 ) + return; // can't possibly be a valid table qualifier + int i = 0, n = l.count(); + if ( n == 1 ) { + table = qualifier; + } else { + for ( QStringList::Iterator it = l.begin(); it != l.end(); ++it ) { + if ( n == 3 ) { + if ( i == 0 ) { + catalog = *it; + } else if ( i == 1 ) { + schema = *it; + } else if ( i == 2 ) { + table = *it; + } + } else if ( n == 2 ) { + if ( i == 0 ) { + schema = *it; + } else if ( i == 1 ) { + table = *it; + } + } + i++; + } + } +} + +//////////////////////////////////////////////////////////////////////////// + +QODBCResult::QODBCResult( const QODBCDriver * db, QODBCPrivate* p ) +: QSqlResult(db) +{ + d = new QODBCPrivate(); + (*d) = (*p); + setExtension( new QODBCPreparedExtension( this ) ); +} + +QODBCResult::~QODBCResult() +{ + if ( d->hStmt && driver()->isOpen() ) { + SQLRETURN r = SQLFreeHandle( SQL_HANDLE_STMT, d->hStmt ); +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qSqlWarning( "QODBCDriver: Unable to free statement handle " + QString::number(r), d ); +#endif + } + + delete d; +} + +bool QODBCResult::reset ( const QString& query ) +{ + setActive( FALSE ); + setAt( QSql::BeforeFirst ); + SQLRETURN r; + + d->rInf.clear(); + // Always reallocate the statement handle - the statement attributes + // are not reset if SQLFreeStmt() is called which causes some problems. + if ( d->hStmt ) { + r = SQLFreeHandle( SQL_HANDLE_STMT, d->hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::reset: Unable to free statement handle", d ); +#endif + return FALSE; + } + } + r = SQLAllocHandle( SQL_HANDLE_STMT, + d->hDbc, + &d->hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::reset: Unable to allocate statement handle", d ); +#endif + return FALSE; + } + + if ( isForwardOnly() ) { + r = SQLSetStmtAttr( d->hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_FORWARD_ONLY, + SQL_IS_UINTEGER ); + } else { + r = SQLSetStmtAttr( d->hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_STATIC, + SQL_IS_UINTEGER ); + } + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::reset: Unable to set 'SQL_CURSOR_STATIC' as statement attribute. Please check your ODBC driver configuration", d ); +#endif + return FALSE; + } + +#ifdef UNICODE + r = SQLExecDirect( d->hStmt, + (SQLWCHAR*) query.unicode(), + (SQLINTEGER) query.length() ); +#else + QCString query8 = query.local8Bit(); + r = SQLExecDirect( d->hStmt, + (SQLCHAR*) query8.data(), + (SQLINTEGER) query8.length() ); +#endif + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { + setLastError( qMakeError( "Unable to execute statement", QSqlError::Statement, d ) ); + return FALSE; + } + SQLSMALLINT count; + r = SQLNumResultCols( d->hStmt, &count ); + if ( count ) { + setSelect( TRUE ); + for ( int i = 0; i < count; ++i ) { + d->rInf.append( qMakeFieldInfo( d, i ) ); + } + } else { + setSelect( FALSE ); + } + setActive( TRUE ); + return TRUE; +} + +bool QODBCResult::fetch(int i) +{ + if ( isForwardOnly() && i < at() ) + return FALSE; + if ( i == at() ) + return TRUE; + fieldCache.clear(); + nullCache.clear(); + int actualIdx = i + 1; + if ( actualIdx <= 0 ) { + setAt( QSql::BeforeFirst ); + return FALSE; + } + SQLRETURN r; + if ( isForwardOnly() ) { + bool ok = TRUE; + while ( ok && i > at() ) + ok = fetchNext(); + return ok; + } else { + r = SQLFetchScroll( d->hStmt, + SQL_FETCH_ABSOLUTE, + actualIdx ); + } + if ( r != SQL_SUCCESS ){ + return FALSE; + } + setAt( i ); + return TRUE; +} + +bool QODBCResult::fetchNext() +{ + SQLRETURN r; + fieldCache.clear(); + nullCache.clear(); + r = SQLFetchScroll( d->hStmt, + SQL_FETCH_NEXT, + 0 ); + if ( r != SQL_SUCCESS ) + return FALSE; + setAt( at() + 1 ); + return TRUE; +} + +bool QODBCResult::fetchFirst() +{ + if ( isForwardOnly() && at() != QSql::BeforeFirst ) + return FALSE; + SQLRETURN r; + fieldCache.clear(); + nullCache.clear(); + if ( isForwardOnly() ) { + return fetchNext(); + } + r = SQLFetchScroll( d->hStmt, + SQL_FETCH_FIRST, + 0 ); + if ( r != SQL_SUCCESS ) + return FALSE; + setAt( 0 ); + return TRUE; +} + +bool QODBCResult::fetchPrior() +{ + if ( isForwardOnly() ) + return FALSE; + SQLRETURN r; + fieldCache.clear(); + nullCache.clear(); + r = SQLFetchScroll( d->hStmt, + SQL_FETCH_PRIOR, + 0 ); + if ( r != SQL_SUCCESS ) + return FALSE; + setAt( at() - 1 ); + return TRUE; +} + +bool QODBCResult::fetchLast() +{ + SQLRETURN r; + fieldCache.clear(); + nullCache.clear(); + + if ( isForwardOnly() ) { + // cannot seek to last row in forwardOnly mode, so we have to use brute force + int i = at(); + if ( i == QSql::AfterLast ) + return FALSE; + if ( i == QSql::BeforeFirst ) + i = 0; + while ( fetchNext() ) + ++i; + setAt( i ); + return TRUE; + } + + r = SQLFetchScroll( d->hStmt, + SQL_FETCH_LAST, + 0 ); + if ( r != SQL_SUCCESS ) { + return FALSE; + } + SQLINTEGER currRow; + r = SQLGetStmtAttr( d->hStmt, + SQL_ROW_NUMBER, + &currRow, + SQL_IS_INTEGER, + 0 ); + if ( r != SQL_SUCCESS ) + return FALSE; + setAt( currRow-1 ); + return TRUE; +} + +QVariant QODBCResult::data( int field ) +{ + if ( field >= (int) d->rInf.count() ) { + qWarning( "QODBCResult::data: column %d out of range", field ); + return QVariant(); + } + if ( fieldCache.contains( field ) ) + return fieldCache[ field ]; + SQLRETURN r(0); + QSQLLEN lengthIndicator = 0; + bool isNull = FALSE; + int current = fieldCache.count(); + for ( ; current < (field + 1); ++current ) { + const QSqlFieldInfo info = d->rInf[ current ]; + switch ( info.type() ) { + case QVariant::LongLong: + fieldCache[ current ] = QVariant( (Q_LLONG) qGetBigIntData( d->hStmt, current, isNull ) ); + nullCache[ current ] = isNull; + break; + case QVariant::Int: + fieldCache[ current ] = QVariant( qGetIntData( d->hStmt, current, isNull ) ); + nullCache[ current ] = isNull; + break; + case QVariant::Date: + DATE_STRUCT dbuf; + r = SQLGetData( d->hStmt, + current+1, + SQL_C_DATE, + (SQLPOINTER)&dbuf, + (QSQLLEN)0, + &lengthIndicator ); + if ( ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) && ( lengthIndicator != SQL_NULL_DATA ) ) { + fieldCache[ current ] = QVariant( QDate( dbuf.year, dbuf.month, dbuf.day ) ); + nullCache[ current ] = FALSE; + } else { + fieldCache[ current ] = QVariant( QDate() ); + nullCache[ current ] = TRUE; + } + break; + case QVariant::Time: + TIME_STRUCT tbuf; + r = SQLGetData( d->hStmt, + current+1, + SQL_C_TIME, + (SQLPOINTER)&tbuf, + (QSQLLEN)0, + &lengthIndicator ); + if ( ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) && ( lengthIndicator != SQL_NULL_DATA ) ) { + fieldCache[ current ] = QVariant( QTime( tbuf.hour, tbuf.minute, tbuf.second ) ); + nullCache[ current ] = FALSE; + } else { + fieldCache[ current ] = QVariant( QTime() ); + nullCache[ current ] = TRUE; + } + break; + case QVariant::DateTime: + TIMESTAMP_STRUCT dtbuf; + r = SQLGetData( d->hStmt, + current+1, + SQL_C_TIMESTAMP, + (SQLPOINTER)&dtbuf, + (QSQLLEN)0, + &lengthIndicator ); + if ( ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) && ( lengthIndicator != SQL_NULL_DATA ) ) { + fieldCache[ current ] = QVariant( QDateTime( QDate( dtbuf.year, dtbuf.month, dtbuf.day ), QTime( dtbuf.hour, dtbuf.minute, dtbuf.second, dtbuf.fraction / 1000000 ) ) ); + nullCache[ current ] = FALSE; + } else { + fieldCache[ current ] = QVariant( QDateTime() ); + nullCache[ current ] = TRUE; + } + break; + case QVariant::ByteArray: { + isNull = FALSE; + QByteArray val = qGetBinaryData( d->hStmt, current, lengthIndicator, isNull ); + fieldCache[ current ] = QVariant( val ); + nullCache[ current ] = isNull; + break; } + case QVariant::String: + isNull = FALSE; + fieldCache[ current ] = QVariant( qGetStringData( d->hStmt, current, + info.length(), isNull, TRUE ) ); + nullCache[ current ] = isNull; + break; + case QVariant::Double: + if ( info.typeID() == SQL_DECIMAL || info.typeID() == SQL_NUMERIC ) + // bind Double values as string to prevent loss of precision + fieldCache[ current ] = QVariant( qGetStringData( d->hStmt, current, + info.length() + 1, isNull, FALSE ) ); // length + 1 for the comma + else + fieldCache[ current ] = QVariant( qGetDoubleData( d->hStmt, current, isNull ) ); + nullCache[ current ] = isNull; + break; + case QVariant::CString: + default: + isNull = FALSE; + fieldCache[ current ] = QVariant( qGetStringData( d->hStmt, current, + info.length(), isNull, FALSE ) ); + nullCache[ current ] = isNull; + break; + } + } + return fieldCache[ --current ]; +} + +bool QODBCResult::isNull( int field ) +{ + if ( !fieldCache.contains( field ) ) { + // since there is no good way to find out whether the value is NULL + // without fetching the field we'll fetch it here. + // (data() also sets the NULL flag) + data( field ); + } + return nullCache[ field ]; +} + +int QODBCResult::size() +{ + return -1; +} + +int QODBCResult::numRowsAffected() +{ + QSQLLEN affectedRowCount(0); + SQLRETURN r = SQLRowCount( d->hStmt, &affectedRowCount ); + if ( r == SQL_SUCCESS ) + return affectedRowCount; +#ifdef QT_CHECK_RANGE + else + qSqlWarning( "QODBCResult::numRowsAffected: Unable to count affected rows", d ); +#endif + return -1; +} + +bool QODBCResult::prepare( const QString& query ) +{ + setActive( FALSE ); + setAt( QSql::BeforeFirst ); + SQLRETURN r; + + d->rInf.clear(); + if ( d->hStmt ) { + r = SQLFreeHandle( SQL_HANDLE_STMT, d->hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::prepare: Unable to close statement", d ); +#endif + return FALSE; + } + } + r = SQLAllocHandle( SQL_HANDLE_STMT, + d->hDbc, + &d->hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::prepare: Unable to allocate statement handle", d ); +#endif + return FALSE; + } + + if ( isForwardOnly() ) { + r = SQLSetStmtAttr( d->hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_FORWARD_ONLY, + SQL_IS_UINTEGER ); + } else { + r = SQLSetStmtAttr( d->hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_STATIC, + SQL_IS_UINTEGER ); + } + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::prepare: Unable to set 'SQL_CURSOR_STATIC' as statement attribute. Please check your ODBC driver configuration", d ); +#endif + return FALSE; + } + +#ifdef UNICODE + r = SQLPrepare( d->hStmt, + (SQLWCHAR*) query.unicode(), + (SQLINTEGER) query.length() ); +#else + QCString query8 = query.local8Bit(); + r = SQLPrepare( d->hStmt, + (SQLCHAR*) query8.data(), + (SQLINTEGER) query8.length() ); +#endif + + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::prepare: Unable to prepare statement", d ); +#endif + return FALSE; + } + return TRUE; +} + +bool QODBCResult::exec() +{ + SQLRETURN r; + QPtrList<QVirtualDestructor> tmpStorage; // holds temporary ptrs. which will be deleted on fu exit + tmpStorage.setAutoDelete( TRUE ); + + setActive( FALSE ); + setAt( QSql::BeforeFirst ); + d->rInf.clear(); + + if ( !d->hStmt ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCResult::exec: No statement handle available", d ); +#endif + return FALSE; + } else { + r = SQLFreeStmt( d->hStmt, SQL_CLOSE ); + if ( r != SQL_SUCCESS ) { + qSqlWarning( "QODBCResult::exec: Unable to close statement handle", d ); + return FALSE; + } + } + + // bind parameters - only positional binding allowed + if ( extension()->index.count() > 0 ) { + QMap<int, QString>::Iterator it; + int para = 1; + QVariant val; + for ( it = extension()->index.begin(); it != extension()->index.end(); ++it ) { + val = extension()->values[ it.data() ].value; + QSQLLEN *ind = new QSQLLEN( SQL_NTS ); + tmpStorage.append( qAutoDeleter(ind) ); + if ( val.isNull() ) { + *ind = SQL_NULL_DATA; + } + switch ( val.type() ) { + case QVariant::Date: { + DATE_STRUCT * dt = new DATE_STRUCT; + tmpStorage.append( qAutoDeleter(dt) ); + QDate qdt = val.toDate(); + dt->year = qdt.year(); + dt->month = qdt.month(); + dt->day = qdt.day(); + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_DATE, + SQL_DATE, + 0, + 0, + (void *) dt, + (QSQLLEN)0, + *ind == SQL_NULL_DATA ? ind : NULL ); + break; } + case QVariant::Time: { + TIME_STRUCT * dt = new TIME_STRUCT; + tmpStorage.append( qAutoDeleter(dt) ); + QTime qdt = val.toTime(); + dt->hour = qdt.hour(); + dt->minute = qdt.minute(); + dt->second = qdt.second(); + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_TIME, + SQL_TIME, + 0, + 0, + (void *) dt, + (QSQLLEN)0, + *ind == SQL_NULL_DATA ? ind : NULL ); + break; } + case QVariant::DateTime: { + TIMESTAMP_STRUCT * dt = new TIMESTAMP_STRUCT; + tmpStorage.append( qAutoDeleter(dt) ); + QDateTime qdt = val.toDateTime(); + dt->year = qdt.date().year(); + dt->month = qdt.date().month(); + dt->day = qdt.date().day(); + dt->hour = qdt.time().hour(); + dt->minute = qdt.time().minute(); + dt->second = qdt.time().second(); + dt->fraction = 0; + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_TIMESTAMP, + SQL_TIMESTAMP, + 0, + 0, + (void *) dt, + (QSQLLEN)0, + *ind == SQL_NULL_DATA ? ind : NULL ); + break; } + case QVariant::Int: { + int * v = new int( val.toInt() ); + tmpStorage.append( qAutoDeleter(v) ); + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_SLONG, + SQL_INTEGER, + 0, + 0, + (void *) v, + (QSQLLEN)0, + *ind == SQL_NULL_DATA ? ind : NULL ); + break; } + case QVariant::Double: { + double * v = new double( val.toDouble() ); + tmpStorage.append( qAutoDeleter(v) ); + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_DOUBLE, + SQL_DOUBLE, + 0, + 0, + (void *) v, + (QSQLLEN)0, + *ind == SQL_NULL_DATA ? ind : NULL ); + break; } + case QVariant::ByteArray: { + if ( *ind != SQL_NULL_DATA ) { + *ind = val.asByteArray().size(); + } + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_BINARY, + SQL_LONGVARBINARY, + val.asByteArray().size(), + 0, + (void *) val.asByteArray().data(), + (QSQLLEN)val.asByteArray().size(), + ind ); + break; } +#ifndef Q_ODBC_VERSION_2 + case QVariant::String: + if ( d->unicode ) { + QString * str = new QString( val.asString() ); + str->ucs2(); + int len = str->length()*2; + tmpStorage.append( qAutoDeleter(str) ); + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_WCHAR, + len > 8000 ? SQL_WLONGVARCHAR : SQL_WVARCHAR, + len > 8000 ? len : 0, + 0, + (void *) str->unicode(), + (QSQLLEN) len, + ind ); + break; + } +#endif + // fall through + default: { + QCString * str = new QCString( val.asString().local8Bit() ); + tmpStorage.append( qAutoDeleter(str) ); + r = SQLBindParameter( d->hStmt, + para, + qParamType[ (int)extension()->values[ it.data() ].typ ], + SQL_C_CHAR, + str->length() > 4000 ? SQL_LONGVARCHAR : SQL_VARCHAR, + str->length() + 1, + 0, + (void *) str->data(), + (QSQLLEN)(str->length() + 1), + ind ); + break; } + } + para++; + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qWarning( "QODBCResult::exec: unable to bind variable: %s", qODBCWarn( d ).local8Bit().data() ); +#endif + setLastError( qMakeError( "Unable to bind variable", QSqlError::Statement, d ) ); + return FALSE; + } + } + } + r = SQLExecute( d->hStmt ); + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { +#ifdef QT_CHECK_RANGE + qWarning( "QODBCResult::exec: Unable to execute statement: %s", qODBCWarn( d ).local8Bit().data() ); +#endif + setLastError( qMakeError( "Unable to execute statement", QSqlError::Statement, d ) ); + return FALSE; + } + SQLSMALLINT count; + r = SQLNumResultCols( d->hStmt, &count ); + if ( count ) { + setSelect( TRUE ); + for ( int i = 0; i < count; ++i ) { + d->rInf.append( qMakeFieldInfo( d, i ) ); + } + } else { + setSelect( FALSE ); + } + setActive( TRUE ); + + //get out parameters + if ( extension()->index.count() > 0 ) { + QMap<int, QString>::Iterator it; + for ( it = extension()->index.begin(); it != extension()->index.end(); ++it ) { + + SQLINTEGER* indPtr = qAutoDeleterData( (QAutoDeleter<SQLINTEGER>*)tmpStorage.getFirst() ); + if ( !indPtr ) + return FALSE; + bool isNull = (*indPtr == SQL_NULL_DATA); + tmpStorage.removeFirst(); + + QVariant::Type type = extension()->values[ it.data() ].value.type(); + if ( isNull ) { + QVariant v; + v.cast(type); + extension()->values[ it.data() ].value = v; + if (type != QVariant::ByteArray) + tmpStorage.removeFirst(); + continue; + } + + switch (type) { + case QVariant::Date: { + DATE_STRUCT * ds = qAutoDeleterData( (QAutoDeleter<DATE_STRUCT>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( QDate( ds->year, ds->month, ds->day ) ); + break; } + case QVariant::Time: { + TIME_STRUCT * dt = qAutoDeleterData( (QAutoDeleter<TIME_STRUCT>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( QTime( dt->hour, dt->minute, dt->second ) ); + break; } + case QVariant::DateTime: { + TIMESTAMP_STRUCT * dt = qAutoDeleterData( (QAutoDeleter<TIMESTAMP_STRUCT>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( QDateTime( QDate( dt->year, dt->month, dt->day ), + QTime( dt->hour, dt->minute, dt->second ) ) ); + break; } + case QVariant::Int: { + int * v = qAutoDeleterData( (QAutoDeleter<int>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( *v ); + break; } + case QVariant::Double: { + double * v = qAutoDeleterData( (QAutoDeleter<double>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( *v ); + break; } + case QVariant::ByteArray: + break; + case QVariant::String: + if ( d->unicode ) { + QString * str = qAutoDeleterData( (QAutoDeleter<QString>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( *str ); + break; + } + // fall through + default: { + QCString * str = qAutoDeleterData( (QAutoDeleter<QCString>*)tmpStorage.getFirst() ); + extension()->values[ it.data() ].value = QVariant( *str ); + break; } + } + if (type != QVariant::ByteArray) + tmpStorage.removeFirst(); + } + } + + return TRUE; +} + +//////////////////////////////////////// + + +QODBCDriver::QODBCDriver( QObject * parent, const char * name ) + : QSqlDriver(parent,name ? name : "QODBC") +{ + init(); +} + +QODBCDriver::QODBCDriver( SQLHANDLE env, SQLHANDLE con, QObject * parent, const char * name ) + : QSqlDriver(parent,name ? name : "QODBC") +{ + init(); + d->hEnv = env; + d->hDbc = con; + if ( env && con ) { + setOpen( TRUE ); + setOpenError( FALSE ); + } +} + +void QODBCDriver::init() +{ + qSqlOpenExtDict()->insert( this, new QODBCOpenExtension(this) ); + d = new QODBCPrivate(); +} + +QODBCDriver::~QODBCDriver() +{ + cleanup(); + delete d; + if ( !qSqlOpenExtDict()->isEmpty() ) { + QSqlOpenExtension *ext = qSqlOpenExtDict()->take( this ); + delete ext; + } +} + +bool QODBCDriver::hasFeature( DriverFeature f ) const +{ + switch ( f ) { + case Transactions: { + if ( !d->hDbc ) + return FALSE; + SQLUSMALLINT txn; + SQLSMALLINT t; + int r = SQLGetInfo( d->hDbc, + (SQLUSMALLINT)SQL_TXN_CAPABLE, + &txn, + sizeof(txn), + &t); + if ( r != SQL_SUCCESS || txn == SQL_TC_NONE ) + return FALSE; + else + return TRUE; + } + case QuerySize: + return FALSE; + case BLOB: + return TRUE; + case Unicode: + return d->unicode; + case PreparedQueries: + return TRUE; + case PositionalPlaceholders: + return TRUE; + default: + return FALSE; + } +} + +bool QODBCDriver::open( const QString&, + const QString&, + const QString&, + const QString&, + int ) +{ + qWarning("QODBCDriver::open(): This version of open() is no longer supported." ); + return FALSE; +} + +bool QODBCDriver::open( const QString & db, + const QString & user, + const QString & password, + const QString &, + int, + const QString& connOpts ) +{ + if ( isOpen() ) + close(); + SQLRETURN r; + r = SQLAllocHandle( SQL_HANDLE_ENV, + SQL_NULL_HANDLE, + &d->hEnv); + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCDriver::open: Unable to allocate environment", d ); +#endif + setOpenError( TRUE ); + return FALSE; + } + r = SQLSetEnvAttr( d->hEnv, + SQL_ATTR_ODBC_VERSION, + (SQLPOINTER)SQL_OV_ODBC2, + SQL_IS_UINTEGER ); + r = SQLAllocHandle( SQL_HANDLE_DBC, + d->hEnv, + &d->hDbc); + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCDriver::open: Unable to allocate connection", d ); +#endif + setOpenError( TRUE ); + return FALSE; + } + + if ( !d->setConnectionOptions( connOpts ) ) + return FALSE; + + // Create the connection string + QString connQStr; + // support the "DRIVER={SQL SERVER};SERVER=blah" syntax + if ( db.contains(".dsn") ) + connQStr = "FILEDSN=" + db; + else if ( db.contains( "DRIVER" ) || db.contains( "SERVER" ) ) + connQStr = db; + else + connQStr = "DSN=" + db; + connQStr += ";UID=" + user + ";PWD=" + password; + SQLSMALLINT cb; + SQLTCHAR connOut[1024]; + r = SQLDriverConnect( d->hDbc, + NULL, +#ifdef UNICODE + (SQLWCHAR*)connQStr.unicode(), +#else + (SQLCHAR*)connQStr.latin1(), +#endif + (SQLSMALLINT)connQStr.length(), + connOut, + 1024, + &cb, + SQL_DRIVER_NOPROMPT ); + if ( r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO ) { + setLastError( qMakeError( "Unable to connect", QSqlError::Connection, d ) ); + setOpenError( TRUE ); + return FALSE; + } + + if ( !d->checkDriver() ) { + setLastError( qMakeError( "Unable to connect - Driver doesn't support all needed functionality", QSqlError::Connection, d ) ); + setOpenError( TRUE ); + return FALSE; + } + + d->checkUnicode(); + d->checkSchemaUsage(); + + setOpen( TRUE ); + setOpenError( FALSE ); + return TRUE; +} + +void QODBCDriver::close() +{ + cleanup(); + setOpen( FALSE ); + setOpenError( FALSE ); +} + +void QODBCDriver::cleanup() +{ + SQLRETURN r; + if ( !d ) + return; + + if( d->hDbc ) { + // Open statements/descriptors handles are automatically cleaned up by SQLDisconnect + if ( isOpen() ) { + r = SQLDisconnect( d->hDbc ); +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qSqlWarning( "QODBCDriver::disconnect: Unable to disconnect datasource", d ); +#endif + } + + r = SQLFreeHandle( SQL_HANDLE_DBC, d->hDbc ); +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qSqlWarning( "QODBCDriver::cleanup: Unable to free connection handle", d ); +#endif + d->hDbc = 0; + } + + if ( d->hEnv ) { + r = SQLFreeHandle( SQL_HANDLE_ENV, d->hEnv ); +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qSqlWarning( "QODBCDriver::cleanup: Unable to free environment handle", d ); +#endif + d->hEnv = 0; + } +} + +// checks whether the server can return char, varchar and longvarchar +// as two byte unicode characters +void QODBCPrivate::checkUnicode() +{ +#if defined(Q_WS_WIN) + if ( !qt_winunicode ) { + unicode = FALSE; + return; + } +#endif + SQLRETURN r; + SQLUINTEGER fFunc; + + unicode = FALSE; + r = SQLGetInfo( hDbc, + SQL_CONVERT_CHAR, + (SQLPOINTER)&fFunc, + sizeof(fFunc), + NULL ); + if ( ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) && ( fFunc & SQL_CVT_WCHAR ) ) { + sql_char_type = QVariant::String; + unicode = TRUE; + } + + r = SQLGetInfo( hDbc, + SQL_CONVERT_VARCHAR, + (SQLPOINTER)&fFunc, + sizeof(fFunc), + NULL ); + if ( ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) && ( fFunc & SQL_CVT_WVARCHAR ) ) { + sql_varchar_type = QVariant::String; + unicode = TRUE; + } + + r = SQLGetInfo( hDbc, + SQL_CONVERT_LONGVARCHAR, + (SQLPOINTER)&fFunc, + sizeof(fFunc), + NULL ); + if ( ( r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO ) && ( fFunc & SQL_CVT_WLONGVARCHAR ) ) { + sql_longvarchar_type = QVariant::String; + unicode = TRUE; + } +} + +bool QODBCPrivate::checkDriver() const +{ +#ifdef ODBC_CHECK_DRIVER + // do not query for SQL_API_SQLFETCHSCROLL because it can't be used at this time + static const SQLUSMALLINT reqFunc[] = { + SQL_API_SQLDESCRIBECOL, SQL_API_SQLGETDATA, SQL_API_SQLCOLUMNS, + SQL_API_SQLGETSTMTATTR, SQL_API_SQLGETDIAGREC, SQL_API_SQLEXECDIRECT, + SQL_API_SQLGETINFO, SQL_API_SQLTABLES, 0 + }; + + // these functions are optional + static const SQLUSMALLINT optFunc[] = { + SQL_API_SQLNUMRESULTCOLS, SQL_API_SQLROWCOUNT, 0 + }; + + SQLRETURN r; + SQLUSMALLINT sup; + + + int i; + // check the required functions + for ( i = 0; reqFunc[ i ] != 0; ++i ) { + + r = SQLGetFunctions( hDbc, reqFunc[ i ], &sup ); + +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) { + qSqlWarning( "QODBCDriver::checkDriver: Cannot get list of supported functions", this ); + return FALSE; + } +#endif + if ( sup == SQL_FALSE ) { +#ifdef QT_CHECK_RANGE + qWarning ( "QODBCDriver::open: Warning - Driver doesn't support all needed functionality (%d). " + "Please look at the Qt SQL Module Driver documentation for more information.", reqFunc[ i ] ); +#endif + return FALSE; + } + } + + // these functions are optional and just generate a warning + for ( i = 0; optFunc[ i ] != 0; ++i ) { + + r = SQLGetFunctions( hDbc, optFunc[ i ], &sup ); + +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) { + qSqlWarning( "QODBCDriver::checkDriver: Cannot get list of supported functions", this ); + return FALSE; + } +#endif + if ( sup == SQL_FALSE ) { +#ifdef QT_CHECK_RANGE + qWarning( "QODBCDriver::checkDriver: Warning - Driver doesn't support some non-critical functions (%d)", optFunc[ i ] ); +#endif + return TRUE; + } + } +#endif //ODBC_CHECK_DRIVER + + return TRUE; +} + +void QODBCPrivate::checkSchemaUsage() +{ + SQLRETURN r; + SQLUINTEGER val; + + r = SQLGetInfo(hDbc, + SQL_SCHEMA_USAGE, + (SQLPOINTER) &val, + sizeof(val), + NULL); + if (r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO) + useSchema = (val != 0); +} + +QSqlQuery QODBCDriver::createQuery() const +{ + return QSqlQuery( new QODBCResult( this, d ) ); +} + +bool QODBCDriver::beginTransaction() +{ + if ( !isOpen() ) { +#ifdef QT_CHECK_RANGE + qWarning(" QODBCDriver::beginTransaction: Database not open" ); +#endif + return FALSE; + } + SQLUINTEGER ac(SQL_AUTOCOMMIT_OFF); + SQLRETURN r = SQLSetConnectAttr( d->hDbc, + SQL_ATTR_AUTOCOMMIT, + (SQLPOINTER)ac, + sizeof(ac) ); + if ( r != SQL_SUCCESS ) { + setLastError( qMakeError( "Unable to disable autocommit", QSqlError::Transaction, d ) ); + return FALSE; + } + return TRUE; +} + +bool QODBCDriver::commitTransaction() +{ + if ( !isOpen() ) { +#ifdef QT_CHECK_RANGE + qWarning(" QODBCDriver::commitTransaction: Database not open" ); +#endif + return FALSE; + } + SQLRETURN r = SQLEndTran( SQL_HANDLE_DBC, + d->hDbc, + SQL_COMMIT ); + if ( r != SQL_SUCCESS ) { + setLastError( qMakeError("Unable to commit transaction", QSqlError::Transaction, d ) ); + return FALSE; + } + return endTrans(); +} + +bool QODBCDriver::rollbackTransaction() +{ + if ( !isOpen() ) { +#ifdef QT_CHECK_RANGE + qWarning(" QODBCDriver::rollbackTransaction: Database not open" ); +#endif + return FALSE; + } + SQLRETURN r = SQLEndTran( SQL_HANDLE_DBC, + d->hDbc, + SQL_ROLLBACK ); + if ( r != SQL_SUCCESS ) { + setLastError( qMakeError( "Unable to rollback transaction", QSqlError::Transaction, d ) ); + return FALSE; + } + return endTrans(); +} + +bool QODBCDriver::endTrans() +{ + SQLUINTEGER ac(SQL_AUTOCOMMIT_ON); + SQLRETURN r = SQLSetConnectAttr( d->hDbc, + SQL_ATTR_AUTOCOMMIT, + (SQLPOINTER)ac, + sizeof(ac)); + if ( r != SQL_SUCCESS ) { + setLastError( qMakeError( "Unable to enable autocommit", QSqlError::Transaction, d ) ); + return FALSE; + } + return TRUE; +} + +QStringList QODBCDriver::tables( const QString& typeName ) const +{ + QStringList tl; + if ( !isOpen() ) + return tl; + int type = typeName.toInt(); + SQLHANDLE hStmt; + + SQLRETURN r = SQLAllocHandle( SQL_HANDLE_STMT, + d->hDbc, + &hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCDriver::tables: Unable to allocate handle", d ); +#endif + return tl; + } + r = SQLSetStmtAttr( hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_FORWARD_ONLY, + SQL_IS_UINTEGER ); + QString tableType; + if ( typeName.isEmpty() || ((type & (int)QSql::Tables) == (int)QSql::Tables) ) + tableType += "TABLE,"; + if ( (type & (int)QSql::Views) == (int)QSql::Views ) + tableType += "VIEW,"; + if ( (type & (int)QSql::SystemTables) == (int)QSql::SystemTables ) + tableType += "SYSTEM TABLE,"; + if ( tableType.isEmpty() ) + return tl; + tableType.truncate( tableType.length() - 1 ); + + r = SQLTables( hStmt, + NULL, + 0, + NULL, + 0, + NULL, + 0, +#ifdef UNICODE + (SQLWCHAR*)tableType.unicode(), +#else + (SQLCHAR*)tableType.latin1(), +#endif + tableType.length() /* characters, not bytes */ ); + +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qSqlWarning( "QODBCDriver::tables Unable to execute table list", d ); +#endif + r = SQLFetchScroll( hStmt, + SQL_FETCH_NEXT, + 0); + while ( r == SQL_SUCCESS ) { + bool isNull; + QString fieldVal = qGetStringData( hStmt, 2, -1, isNull, d->unicode ); + tl.append( fieldVal ); + r = SQLFetchScroll( hStmt, + SQL_FETCH_NEXT, + 0); + } + + r = SQLFreeHandle( SQL_HANDLE_STMT, hStmt ); + if ( r!= SQL_SUCCESS ) + qSqlWarning( "QODBCDriver: Unable to free statement handle" + QString::number(r), d ); + return tl; +} + +QSqlIndex QODBCDriver::primaryIndex( const QString& tablename ) const +{ + QSqlIndex index( tablename ); + if ( !isOpen() ) + return index; + bool usingSpecialColumns = FALSE; + QSqlRecord rec = record( tablename ); + + SQLHANDLE hStmt; + SQLRETURN r = SQLAllocHandle( SQL_HANDLE_STMT, + d->hDbc, + &hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCDriver::primaryIndex: Unable to list primary key", d ); +#endif + return index; + } + QString catalog, schema, table; + d->splitTableQualifier( tablename, catalog, schema, table ); + r = SQLSetStmtAttr( hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_FORWARD_ONLY, + SQL_IS_UINTEGER ); + r = SQLPrimaryKeys( hStmt, +#ifdef UNICODE + catalog.length() == 0 ? NULL : (SQLWCHAR*)catalog.unicode(), +#else + catalog.length() == 0 ? NULL : (SQLCHAR*)catalog.latin1(), +#endif + catalog.length(), +#ifdef UNICODE + schema.length() == 0 ? NULL : (SQLWCHAR*)schema.unicode(), +#else + schema.length() == 0 ? NULL : (SQLCHAR*)schema.latin1(), +#endif + schema.length(), +#ifdef UNICODE + (SQLWCHAR*)table.unicode(), +#else + (SQLCHAR*)table.latin1(), +#endif + table.length() /* in characters, not in bytes */); + + // if the SQLPrimaryKeys() call does not succeed (e.g the driver + // does not support it) - try an alternative method to get hold of + // the primary index (e.g MS Access and FoxPro) + if ( r != SQL_SUCCESS ) { + r = SQLSpecialColumns( hStmt, + SQL_BEST_ROWID, +#ifdef UNICODE + catalog.length() == 0 ? NULL : (SQLWCHAR*)catalog.unicode(), +#else + catalog.length() == 0 ? NULL : (SQLCHAR*)catalog.latin1(), +#endif + catalog.length(), +#ifdef UNICODE + schema.length() == 0 ? NULL : (SQLWCHAR*)schema.unicode(), +#else + schema.length() == 0 ? NULL : (SQLCHAR*)schema.latin1(), +#endif + schema.length(), +#ifdef UNICODE + (SQLWCHAR*)table.unicode(), +#else + (SQLCHAR*)table.latin1(), +#endif + + table.length(), + SQL_SCOPE_CURROW, + SQL_NULLABLE ); + + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCDriver::primaryIndex: Unable to execute primary key list", d ); +#endif + } else { + usingSpecialColumns = TRUE; + } + } + r = SQLFetchScroll( hStmt, + SQL_FETCH_NEXT, + 0 ); + bool isNull; + int fakeId = 0; + QString cName, idxName; + // Store all fields in a StringList because some drivers can't detail fields in this FETCH loop + while ( r == SQL_SUCCESS ) { + if ( usingSpecialColumns ) { + cName = qGetStringData( hStmt, 1, -1, isNull, d->unicode ); // column name + idxName = QString::number( fakeId++ ); // invent a fake index name + } else { + cName = qGetStringData( hStmt, 3, -1, isNull, d->unicode ); // column name + idxName = qGetStringData( hStmt, 5, -1, isNull, d->unicode ); // pk index name + } + QSqlField *fld = rec.field(cName); + if (fld) + index.append(*fld); + index.setName( idxName ); + r = SQLFetchScroll( hStmt, + SQL_FETCH_NEXT, + 0 ); + } + r = SQLFreeHandle( SQL_HANDLE_STMT, hStmt ); + if ( r!= SQL_SUCCESS ) + qSqlWarning( "QODBCDriver: Unable to free statement handle" + QString::number(r), d ); + return index; +} + +QSqlRecord QODBCDriver::record( const QString& tablename ) const +{ + return recordInfo( tablename ).toRecord(); +} + +QSqlRecord QODBCDriver::record( const QSqlQuery& query ) const +{ + return recordInfo( query ).toRecord(); +} + +QSqlRecordInfo QODBCDriver::recordInfo( const QString& tablename ) const +{ + QSqlRecordInfo fil; + if ( !isOpen() ) + return fil; + + SQLHANDLE hStmt; + QString catalog, schema, table; + d->splitTableQualifier( tablename, catalog, schema, table ); + SQLRETURN r = SQLAllocHandle( SQL_HANDLE_STMT, + d->hDbc, + &hStmt ); + if ( r != SQL_SUCCESS ) { +#ifdef QT_CHECK_RANGE + qSqlWarning( "QODBCDriver::record: Unable to allocate handle", d ); +#endif + return fil; + } + r = SQLSetStmtAttr( hStmt, + SQL_ATTR_CURSOR_TYPE, + (SQLPOINTER)SQL_CURSOR_FORWARD_ONLY, + SQL_IS_UINTEGER ); + r = SQLColumns( hStmt, +#ifdef UNICODE + catalog.length() == 0 ? NULL : (SQLWCHAR*)catalog.unicode(), +#else + catalog.length() == 0 ? NULL : (SQLCHAR*)catalog.latin1(), +#endif + catalog.length(), +#ifdef UNICODE + schema.length() == 0 ? NULL : (SQLWCHAR*)schema.unicode(), +#else + schema.length() == 0 ? NULL : (SQLCHAR*)schema.latin1(), +#endif + schema.length(), +#ifdef UNICODE + (SQLWCHAR*)table.unicode(), +#else + (SQLCHAR*)table.latin1(), +#endif + table.length(), + NULL, + 0 ); +#ifdef QT_CHECK_RANGE + if ( r != SQL_SUCCESS ) + qSqlWarning( "QODBCDriver::record: Unable to execute column list", d ); +#endif + r = SQLFetchScroll( hStmt, + SQL_FETCH_NEXT, + 0); + // Store all fields in a StringList because some drivers can't detail fields in this FETCH loop + while ( r == SQL_SUCCESS ) { + + fil.append( qMakeFieldInfo( hStmt, d ) ); + + r = SQLFetchScroll( hStmt, + SQL_FETCH_NEXT, + 0); + } + + r = SQLFreeHandle( SQL_HANDLE_STMT, hStmt ); + if ( r!= SQL_SUCCESS ) + qSqlWarning( "QODBCDriver: Unable to free statement handle " + QString::number(r), d ); + + return fil; +} + +QSqlRecordInfo QODBCDriver::recordInfo( const QSqlQuery& query ) const +{ + QSqlRecordInfo fil; + if ( !isOpen() ) + return fil; + if ( query.isActive() && query.driver() == this ) { + QODBCResult* result = (QODBCResult*)query.result(); + fil = result->d->rInf; + } + return fil; +} + +SQLHANDLE QODBCDriver::environment() +{ + return d->hEnv; +} + +SQLHANDLE QODBCDriver::connection() +{ + return d->hDbc; +} + +QString QODBCDriver::formatValue( const QSqlField* field, + bool trimStrings ) const +{ + QString r; + if ( field->isNull() ) { + r = nullText(); + } else if ( field->type() == QVariant::DateTime ) { + // Use an escape sequence for the datetime fields + if ( field->value().toDateTime().isValid() ){ + QDate dt = field->value().toDateTime().date(); + QTime tm = field->value().toDateTime().time(); + // Dateformat has to be "yyyy-MM-dd hh:mm:ss", with leading zeroes if month or day < 10 + r = "{ ts '" + + QString::number(dt.year()) + "-" + + QString::number(dt.month()).rightJustify( 2, '0', TRUE ) + "-" + + QString::number(dt.day()).rightJustify( 2, '0', TRUE ) + " " + + tm.toString() + + "' }"; + } else + r = nullText(); + } else if ( field->type() == QVariant::ByteArray ) { + QByteArray ba = field->value().toByteArray(); + QString res; + static const char hexchars[] = "0123456789abcdef"; + for ( uint i = 0; i < ba.size(); ++i ) { + uchar s = (uchar) ba[(int)i]; + res += hexchars[s >> 4]; + res += hexchars[s & 0x0f]; + } + r = "0x" + res; + } else { + r = QSqlDriver::formatValue( field, trimStrings ); + } + return r; +} |