firebird/ResultSet.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
 */
 
#include "ResultSet.hxx"
#include "ResultSetMetaData.hxx"
#include "Util.hxx"
 
#include <comphelper/sequence.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <connectivity/dbexception.hxx>
#include <propertyids.hxx>
#include <rtl/ustrbuf.hxx>
#include <sal/log.hxx>
#include <TConnection.hxx>
 
#include <com/sun/star/beans/PropertyAttribute.hpp>
#include <com/sun/star/sdbc/DataType.hpp>
#include <com/sun/star/sdbc/FetchDirection.hpp>
#include <com/sun/star/sdbc/ResultSetConcurrency.hpp>
#include <com/sun/star/sdbc/ResultSetType.hpp>
#include <com/sun/star/sdbc/SQLException.hpp>
 
using namespace ::comphelper;
using namespace ::connectivity;
using namespace ::connectivity::firebird;
using namespace ::cppu;
using namespace ::dbtools;
using namespace ::osl;
 
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::sdbcx;
using namespace ::com::sun::star::container;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::util;
 
OResultSet::OResultSet(Connection* pConnection,
                       ::osl::Mutex& rMutex,
                       const uno::Reference< XInterface >& xStatement,
                       isc_stmt_handle aStatementHandle,
                       XSQLDA* pSqlda )
    : OResultSet_BASE(rMutex)
    , OPropertyContainer(OResultSet_BASE::rBHelper)
    , m_bIsBookmarkable(false)
    , m_nFetchSize(1)
    , m_nResultSetType(css::sdbc::ResultSetType::FORWARD_ONLY)
    , m_nFetchDirection(css::sdbc::FetchDirection::FORWARD)
    , m_nResultSetConcurrency(css::sdbc::ResultSetConcurrency::READ_ONLY)
    , m_pConnection(pConnection)
    , m_rMutex(rMutex)
    , m_xStatement(xStatement)
    , m_pSqlda(pSqlda)
    , m_statementHandle(aStatementHandle)
    , m_bWasNull(false)
    , m_currentRow(0)
    , m_bIsAfterLastRow(false)
    , m_fieldCount(pSqlda? pSqlda->sqld : 0)
{
    SAL_INFO("connectivity.firebird", "OResultSet().");
    registerProperty(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_ISBOOKMARKABLE),
                     PROPERTY_ID_ISBOOKMARKABLE,
                     PropertyAttribute::READONLY,
                     &m_bIsBookmarkable,
                     cppu::UnoType<decltype(m_bIsBookmarkable)>::get());
    registerProperty(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_FETCHSIZE),
                     PROPERTY_ID_FETCHSIZE,
                     PropertyAttribute::READONLY,
                     &m_nFetchSize,
                     cppu::UnoType<decltype(m_nFetchSize)>::get());
    registerProperty(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_RESULTSETTYPE),
                     PROPERTY_ID_RESULTSETTYPE,
                     PropertyAttribute::READONLY,
                     &m_nResultSetType,
                     cppu::UnoType<decltype(m_nResultSetType)>::get());
    registerProperty(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_FETCHDIRECTION),
                     PROPERTY_ID_FETCHDIRECTION,
                     PropertyAttribute::READONLY,
                     &m_nFetchDirection,
                     cppu::UnoType<decltype(m_nFetchDirection)>::get());
    registerProperty(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_RESULTSETCONCURRENCY),
                     PROPERTY_ID_RESULTSETCONCURRENCY,
                     PropertyAttribute::READONLY,
                     &m_nResultSetConcurrency,
                     cppu::UnoType<decltype(m_nResultSetConcurrency)>::get());
 
    if (!pSqlda)
        return; // TODO: what?
 
}
 
OResultSet::~OResultSet()
{
}
 
// ---- XResultSet -- Row retrieval methods ------------------------------------
sal_Int32 SAL_CALL OResultSet::getRow()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return m_currentRow;
}
 
sal_Bool SAL_CALL OResultSet::next()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    m_currentRow++;
 
    ISC_STATUS fetchStat = isc_dsql_fetch(m_statusVector,
                               &m_statementHandle,
                               1,
                               m_pSqlda);
    if (fetchStat == 0)         // SUCCESSFUL
    {
        return true;
    }
    else if (fetchStat == 100) // END OF DATASET
    {
        m_bIsAfterLastRow = true;
        return false;
    }
    else
    {
        SAL_WARN("connectivity.firebird", "Error when fetching data");
        // Throws sql exception as appropriate
        evaluateStatusVector(m_statusVector, u"isc_dsql_fetch", *this);
        return false;
    }
}
 
sal_Bool SAL_CALL OResultSet::previous()
{
    ::dbtools::throwFunctionNotSupportedSQLException("previous not supported in firebird",
                                                  *this);
    return false;
}
 
sal_Bool SAL_CALL OResultSet::isLast()
{
    ::dbtools::throwFunctionNotSupportedSQLException("isLast not supported in firebird",
                                                  *this);
    return false;
}
 
sal_Bool SAL_CALL OResultSet::isBeforeFirst()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return m_currentRow == 0;
}
 
sal_Bool SAL_CALL OResultSet::isAfterLast()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return m_bIsAfterLastRow;
}
 
sal_Bool SAL_CALL OResultSet::isFirst()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return m_currentRow == 1 && !m_bIsAfterLastRow;
}
 
void SAL_CALL OResultSet::beforeFirst()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if (m_currentRow != 0)
        ::dbtools::throwFunctionNotSupportedSQLException("beforeFirst not supported in firebird",
                                                      *this);
}
 
void SAL_CALL OResultSet::afterLast()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if (!m_bIsAfterLastRow)
        ::dbtools::throwFunctionNotSupportedSQLException("afterLast not supported in firebird",
                                                      *this);
}
 
sal_Bool SAL_CALL OResultSet::first()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if (m_currentRow == 0)
    {
        return next();
    }
    else if (m_currentRow == 1 && !m_bIsAfterLastRow)
    {
        return true;
    }
    else
    {
        ::dbtools::throwFunctionNotSupportedSQLException("first not supported in firebird",
                                                      *this);
        return false;
    }
}
 
sal_Bool SAL_CALL OResultSet::last()
{
    // We need to iterate past the last row to know when we've passed the last
    // row, hence we can't actually move to last.
    ::dbtools::throwFunctionNotSupportedSQLException("last not supported in firebird",
                                                  *this);
    return false;
}
 
sal_Bool SAL_CALL OResultSet::absolute(sal_Int32 aRow)
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if (aRow > m_currentRow)
    {
        sal_Int32 aIterations = aRow - m_currentRow;
        return relative(aIterations);
    }
    else
    {
        ::dbtools::throwFunctionNotSupportedSQLException("absolute not supported in firebird",
                                                      *this);
        return false;
    }
}
 
sal_Bool SAL_CALL OResultSet::relative(sal_Int32 row)
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if (row > 0)
    {
        while (row--)
        {
            if (!next())
                return false;
        }
        return true;
    }
    else
    {
        ::dbtools::throwFunctionNotSupportedSQLException("relative not supported in firebird",
                                                      *this);
        return false;
    }
}
 
void OResultSet::checkColumnIndex(sal_Int32 nIndex)
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if( nIndex < 1 || nIndex > m_fieldCount )
    {
        ::dbtools::throwSQLException(
            "No column " + OUString::number(nIndex),
            ::dbtools::StandardSQLState::COLUMN_NOT_FOUND,
            *this);
    }
}
 
void OResultSet::checkRowIndex()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if((m_currentRow < 1) || m_bIsAfterLastRow)
    {
        ::dbtools::throwSQLException(
            "Invalid Row",
            ::dbtools::StandardSQLState::INVALID_CURSOR_POSITION,
            *this);
    }
}
 
Any SAL_CALL OResultSet::queryInterface( const Type & rType )
{
    Any aRet = OPropertySetHelper::queryInterface(rType);
    return aRet.hasValue() ? aRet : OResultSet_BASE::queryInterface(rType);
}
 
 Sequence<  Type > SAL_CALL OResultSet::getTypes()
{
    return concatSequences(OPropertySetHelper::getTypes(), OResultSet_BASE::getTypes());
}
// ---- XColumnLocate ---------------------------------------------------------
sal_Int32 SAL_CALL OResultSet::findColumn(const OUString& rColumnName)
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    uno::Reference< XResultSetMetaData > xMeta = getMetaData();
    sal_Int32 nLen = xMeta->getColumnCount();
    sal_Int32 i;
 
    for(i = 1; i<=nLen; ++i)
    {
        // We assume case sensitive, otherwise you'd have to test
        // xMeta->isCaseSensitive and use qualsIgnoreAsciiCase as needed.
        if (rColumnName == xMeta->getColumnName(i))
            return i;
    }
 
    ::dbtools::throwInvalidColumnException(rColumnName, *this);
    assert(false);
    return 0; // Never reached
}
 
uno::Reference< XInputStream > SAL_CALL OResultSet::getBinaryStream( sal_Int32 )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return nullptr;
}
 
uno::Reference< XInputStream > SAL_CALL OResultSet::getCharacterStream( sal_Int32 )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return nullptr;
}
 
// ---- Internal Utilities ---------------------------------------------------
bool OResultSet::isNull(const sal_Int32 nColumnIndex)
{
    assert(nColumnIndex <= m_fieldCount);
    XSQLVAR* pVar = m_pSqlda->sqlvar;
 
    if (pVar[nColumnIndex-1].sqltype & 1) // Indicates column may contain null
    {
        if (*pVar[nColumnIndex-1].sqlind == -1)
            return true;
    }
    return false;
}
 
template <typename T>
OUString OResultSet::makeNumericString(const sal_Int32 nColumnIndex)
{
    //  minus because firebird stores scale as a negative number
    int nDecimalCount = -(m_pSqlda->sqlvar[nColumnIndex-1].sqlscale);
    if(nDecimalCount < 0)
    {
        // scale should be always positive
        assert(false);
        return OUString();
    }
 
    OUStringBuffer sRetBuffer;
    T nAllDigits = *reinterpret_cast<T*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
    sal_Int64 nDecimalCountExp = pow10Integer(nDecimalCount);
 
    if(nAllDigits < 0)
    {
        sRetBuffer.append('-');
        nAllDigits = -nAllDigits; // abs
    }
 
    sRetBuffer.append(static_cast<sal_Int64>(nAllDigits / nDecimalCountExp) );
    if( nDecimalCount > 0)
    {
        sRetBuffer.append('.');
 
        sal_Int64 nFractionalPart = nAllDigits % nDecimalCountExp;
 
        int iCount = 0; // digit count
        sal_Int64 nFracTemp = nFractionalPart;
        while(nFracTemp>0)
        {
            nFracTemp /= 10;
            iCount++;
        }
 
        int nMissingNulls = nDecimalCount - iCount;
 
        // append nulls after dot and before nFractionalPart
        for(int i=0; i<nMissingNulls; i++)
        {
            sRetBuffer.append('0');
        }
 
        // the rest
        sRetBuffer.append(nFractionalPart);
    }
 
    return sRetBuffer.makeStringAndClear();
}
 
template <typename T>
T OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT nType)
{
    m_bWasNull = isNull(nColumnIndex);
    if (m_bWasNull)
        return T();
 
    if ((m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1) == nType)
        return *reinterpret_cast<T*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
    else
    {
        ORowSetValue row = retrieveValue< ORowSetValue >(nColumnIndex, 0);
        if constexpr ( std::is_same_v<sal_Int64, T> )
            return row.getLong();
        else if constexpr ( std::is_same_v<sal_Int32, T> )
            return row.getInt32();
        else if constexpr ( std::is_same_v<sal_Int16, T> )
            return row.getInt16();
        else if constexpr ( std::is_same_v<float, T> )
            return row.getFloat();
        else if constexpr ( std::is_same_v<double, T> )
            return row.getDouble();
        else if constexpr ( std::is_same_v<bool, T> )
            return row.getBool();
        else
            return row;
    }
}
 
template <>
ORowSetValue OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT /*nType*/)
{
    // See https://wiki.documentfoundation.org/Documentation/DevGuide/Database_Access#Using_the_getXXX_Methods
    // (bottom of page) for a chart of possible conversions, we should allow all
    // of these -- Blob/Clob will probably need some specialist handling especially
    // w.r.t. to generating Strings for them.
    //
    // Basically we just have to map to the correct direct request and
    // ORowSetValue does the rest for us here.
    int nSqlSubType = m_pSqlda->sqlvar[nColumnIndex-1].sqlsubtype;
 
    // TODO Firebird 3.0 does not set subtype (i.e. set to 0) for computed numeric/decimal value.
    // It may change in the future.
    // Imply numeric data type when subtype is 0 and scale is negative
    if( nSqlSubType == 0 && m_pSqlda->sqlvar[nColumnIndex-1].sqlscale < 0 )
        nSqlSubType = 1;
 
    switch (m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1)
    {
        case SQL_TEXT:
        case SQL_VARYING:
            return getString(nColumnIndex);
        case SQL_SHORT:
            if(nSqlSubType == 1 || nSqlSubType == 2) //numeric or decimal
                return getString(nColumnIndex);
            return getShort(nColumnIndex);
        case SQL_LONG:
            if(nSqlSubType == 1 || nSqlSubType == 2) //numeric or decimal
                return getString(nColumnIndex);
            return getInt(nColumnIndex);
        case SQL_FLOAT:
            return getFloat(nColumnIndex);
        case SQL_DOUBLE:
            if(nSqlSubType == 1 || nSqlSubType == 2) //numeric or decimal
                return getString(nColumnIndex);
            return getDouble(nColumnIndex);
        case SQL_D_FLOAT:
            return getFloat(nColumnIndex);
        case SQL_TIMESTAMP:
            return getTimestamp(nColumnIndex);
        case SQL_TYPE_TIME:
            return getTime(nColumnIndex);
        case SQL_TYPE_DATE:
            return getDate(nColumnIndex);
        case SQL_INT64:
            if(nSqlSubType == 1 || nSqlSubType == 2) //numeric or decimal
                return getString(nColumnIndex);
            return getLong(nColumnIndex);
        case SQL_BOOLEAN:
            return ORowSetValue(bool(getBoolean(nColumnIndex)));
        case SQL_BLOB:
        case SQL_NULL:
        case SQL_QUAD:
        case SQL_ARRAY:
            // TODO: these are all invalid conversions, so maybe we should
            // throw an exception?
            return ORowSetValue();
        default:
            assert(false);
            return ORowSetValue();
    }
}
 
template <>
Date OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT /*nType*/)
{
    if ((m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1) == SQL_TYPE_DATE)
    {
        ISC_DATE aISCDate = *reinterpret_cast<ISC_DATE*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
 
        struct tm aCTime;
        isc_decode_sql_date(&aISCDate, &aCTime);
 
        return Date(aCTime.tm_mday, aCTime.tm_mon + 1, aCTime.tm_year + 1900);
    }
    else
    {
        return retrieveValue< ORowSetValue >(nColumnIndex, 0).getDate();
    }
}
 
template <>
Time OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT /*nType*/)
{
    if ((m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1) == SQL_TYPE_TIME)
    {
        ISC_TIME aISCTime = *reinterpret_cast<ISC_TIME*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
 
        struct tm aCTime;
        isc_decode_sql_time(&aISCTime, &aCTime);
 
        // First field is nanoseconds.
        // last field denotes UTC (true) or unknown (false)
        // Here we "know" that ISC_TIME is simply in units of seconds/ISC_TIME_SECONDS_PRECISION
        // with no other funkiness, so we can get the fractional seconds easily.
        return Time((aISCTime % ISC_TIME_SECONDS_PRECISION) * (1000000000 / ISC_TIME_SECONDS_PRECISION),
                    aCTime.tm_sec, aCTime.tm_min, aCTime.tm_hour, false);
    }
    else
    {
        return retrieveValue< ORowSetValue >(nColumnIndex, 0).getTime();
    }
}
 
template <>
DateTime OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT /*nType*/)
{
    if ((m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1) == SQL_TIMESTAMP)
    {
        ISC_TIMESTAMP aISCTimestamp = *reinterpret_cast<ISC_TIMESTAMP*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
 
        struct tm aCTime;
        isc_decode_timestamp(&aISCTimestamp, &aCTime);
 
        // Ditto here, see comment in previous function about ISC_TIME and ISC_TIME_SECONDS_PRECISION.
        return DateTime((aISCTimestamp.timestamp_time % ISC_TIME_SECONDS_PRECISION) * (1000000000 / ISC_TIME_SECONDS_PRECISION), //nanoseconds
                        aCTime.tm_sec,
                        aCTime.tm_min,
                        aCTime.tm_hour,
                        aCTime.tm_mday,
                        aCTime.tm_mon + 1, // tm is from 0 to 11
                        aCTime.tm_year + 1900, //tm_year is the years since 1900
                        false); // denotes UTC (true), or unknown (false)
    }
    else
    {
        return retrieveValue< ORowSetValue >(nColumnIndex, 0).getDateTime();
    }
}
 
template <>
OUString OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT /*nType*/)
{
    // &~1 to remove the "can contain NULL" indicator
    int aSqlType = m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1;
    int aSqlSubType = m_pSqlda->sqlvar[nColumnIndex-1].sqlsubtype;
    if (aSqlType == SQL_TEXT )
    {
        return OUString(m_pSqlda->sqlvar[nColumnIndex-1].sqldata,
                        m_pSqlda->sqlvar[nColumnIndex-1].sqllen,
                        RTL_TEXTENCODING_UTF8);
    }
    else if (aSqlType == SQL_VARYING)
    {
        // First 2 bytes are a short containing the length of the string
        // Under unclear conditions, it may be wrong and greater than sqllen.
        sal_uInt16 aLength = *reinterpret_cast<sal_uInt16*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
        // Use greater signed type sal_Int32 to get the minimum of two 16-bit values
        return OUString(m_pSqlda->sqlvar[nColumnIndex-1].sqldata + 2,
                        std::min<sal_Int32>(aLength, m_pSqlda->sqlvar[nColumnIndex-1].sqllen),
                        RTL_TEXTENCODING_UTF8);
    }
    else if ((aSqlType == SQL_SHORT || aSqlType == SQL_LONG ||
              aSqlType == SQL_DOUBLE || aSqlType == SQL_INT64)
          && (aSqlSubType == 1 ||
              aSqlSubType == 2 ||
              (aSqlSubType == 0 && m_pSqlda->sqlvar[nColumnIndex-1].sqlscale < 0) ) )
    {
        // decimal and numeric types
        switch(aSqlType)
        {
            case SQL_SHORT:
                return makeNumericString<sal_Int16>(nColumnIndex);
            case SQL_LONG:
                return makeNumericString<sal_Int32>(nColumnIndex);
            case SQL_DOUBLE:
                // TODO FIXME 64 bits?
            case SQL_INT64:
                return makeNumericString<sal_Int64>(nColumnIndex);
            default:
                assert(false);
                return OUString(); // never reached
        }
    }
    else if(aSqlType == SQL_BLOB && aSqlSubType == static_cast<short>(BlobSubtype::Clob) )
    {
        uno::Reference<XClob> xClob = getClob(nColumnIndex);
        return xClob->getSubString( 1, xClob->length() );
    }
    else
    {
        return retrieveValue< ORowSetValue >(nColumnIndex, 0).getString();
    }
}
 
template <>
ISC_QUAD* OResultSet::retrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT nType)
{
    // TODO: this is probably wrong
    if ((m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1) != nType)
        throw SQLException(); // TODO: better exception (can't convert Blob)
 
    return reinterpret_cast<ISC_QUAD*>(m_pSqlda->sqlvar[nColumnIndex-1].sqldata);
}
 
template <typename T>
T OResultSet::safelyRetrieveValue(const sal_Int32 nColumnIndex, const ISC_SHORT nType)
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    checkColumnIndex(nColumnIndex);
    checkRowIndex();
 
    m_bWasNull = isNull(nColumnIndex);
    if (m_bWasNull)
        return T();
 
    return retrieveValue< T >(nColumnIndex, nType);
}
 
// ---- XRow -----------------------------------------------------------------
sal_Bool SAL_CALL OResultSet::wasNull()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return m_bWasNull;
}
 
// ---- XRow: Simple Numerical types ------------------------------------------
sal_Bool SAL_CALL OResultSet::getBoolean(sal_Int32 nColumnIndex)
{
    return safelyRetrieveValue< bool >(nColumnIndex, SQL_BOOLEAN);
}
 
sal_Int8 SAL_CALL OResultSet::getByte(sal_Int32 nColumnIndex)
{
    // Not a native firebird type hence we always have to convert.
    return safelyRetrieveValue< ORowSetValue >(nColumnIndex).getInt8();
}
 
Sequence< sal_Int8 > SAL_CALL OResultSet::getBytes(sal_Int32 nColumnIndex)
{
    // &~1 to remove the "can contain NULL" indicator
    int aSqlType = m_pSqlda->sqlvar[nColumnIndex-1].sqltype & ~1;
    if ( aSqlType == SQL_BLOB )
    {
        Reference< XBlob> xBlob = getBlob(nColumnIndex);
        if (xBlob.is())
        {
            const sal_Int64 aBlobLength = xBlob->length();
            if (aBlobLength > SAL_MAX_INT32)
            {
                SAL_WARN("connectivity.firebird", "getBytes can't return " << aBlobLength << " bytes but only max " << SAL_MAX_INT32);
                return xBlob->getBytes(1, SAL_MAX_INT32);
            }
            return xBlob->getBytes(1, static_cast<sal_Int32>(aBlobLength));
        }
        else
            return Sequence< sal_Int8 >();
    }
    // TODO implement SQL_VARYING and SQL_TEXT
    // as it's the counterpart as OPreparedStatement::setBytes
    else
    {
        return Sequence< sal_Int8 >(); // TODO: implement
    }
}
 
sal_Int16 SAL_CALL OResultSet::getShort(sal_Int32 columnIndex)
{
    return safelyRetrieveValue< sal_Int16 >(columnIndex, SQL_SHORT);
}
 
sal_Int32 SAL_CALL OResultSet::getInt(sal_Int32 columnIndex)
{
    return safelyRetrieveValue< sal_Int32 >(columnIndex, SQL_LONG);
}
 
sal_Int64 SAL_CALL OResultSet::getLong(sal_Int32 columnIndex)
{
    return safelyRetrieveValue< sal_Int64 >(columnIndex, SQL_INT64);
}
 
float SAL_CALL OResultSet::getFloat(sal_Int32 columnIndex)
{
    return safelyRetrieveValue< float >(columnIndex, SQL_FLOAT);
}
 
double SAL_CALL OResultSet::getDouble(sal_Int32 columnIndex)
{
    return safelyRetrieveValue< double >(columnIndex, SQL_DOUBLE);
}
 
// ---- XRow: More complex types ----------------------------------------------
OUString SAL_CALL OResultSet::getString(sal_Int32 nIndex)
{
    return safelyRetrieveValue< OUString >(nIndex);
}
 
Date SAL_CALL OResultSet::getDate(sal_Int32 nIndex)
{
    return safelyRetrieveValue< Date >(nIndex, SQL_TYPE_DATE);
}
 
Time SAL_CALL OResultSet::getTime(sal_Int32 nIndex)
{
    return safelyRetrieveValue< css::util::Time >(nIndex, SQL_TYPE_TIME);
}
 
DateTime SAL_CALL OResultSet::getTimestamp(sal_Int32 nIndex)
{
    return safelyRetrieveValue< DateTime >(nIndex, SQL_TIMESTAMP);
}
 
 
uno::Reference< XResultSetMetaData > SAL_CALL OResultSet::getMetaData(  )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    if(!m_xMetaData.is())
        m_xMetaData = new OResultSetMetaData(m_pConnection
                                           , m_pSqlda);
    return m_xMetaData;
}
 
uno::Reference< XArray > SAL_CALL OResultSet::getArray( sal_Int32 )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return nullptr;
}
 
 
uno::Reference< XClob > SAL_CALL OResultSet::getClob( sal_Int32 columnIndex )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    int aSqlSubType = m_pSqlda->sqlvar[columnIndex-1].sqlsubtype;
 
    SAL_WARN_IF(aSqlSubType != 1,
        "connectivity.firebird", "wrong subtype, not a textual blob");
 
    ISC_QUAD* pBlobID = safelyRetrieveValue< ISC_QUAD* >(columnIndex, SQL_BLOB);
    if (!pBlobID)
        return nullptr;
    return m_pConnection->createClob(pBlobID);
}
 
uno::Reference< XBlob > SAL_CALL OResultSet::getBlob(sal_Int32 columnIndex)
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    // TODO: CLOB etc. should be valid here too, but we probably want some more
    // cleverness around this.
    ISC_QUAD* pBlobID = safelyRetrieveValue< ISC_QUAD* >(columnIndex, SQL_BLOB);
    if (!pBlobID)
        return nullptr;
    return m_pConnection->createBlob(pBlobID);
}
 
 
uno::Reference< XRef > SAL_CALL OResultSet::getRef( sal_Int32 )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return nullptr;
}
 
 
Any SAL_CALL OResultSet::getObject( sal_Int32, const uno::Reference< css::container::XNameAccess >& )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return Any();
}
 
 
void SAL_CALL OResultSet::close()
{
    SAL_INFO("connectivity.firebird", "close().");
 
    {
        MutexGuard aGuard(m_rMutex);
        checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
    }
    dispose();
}
 
 
uno::Reference< XInterface > SAL_CALL OResultSet::getStatement()
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
    return m_xStatement;
}
//----- XResultSet: unsupported change detection methods ---------------------
sal_Bool SAL_CALL OResultSet::rowDeleted()
{
    ::dbtools::throwFunctionNotSupportedSQLException("rowDeleted not supported in firebird",
                                                  *this);
    return false;
}
sal_Bool SAL_CALL OResultSet::rowInserted()
{
    ::dbtools::throwFunctionNotSupportedSQLException("rowInserted not supported in firebird",
                                                  *this);
    return false;
}
 
sal_Bool SAL_CALL OResultSet::rowUpdated()
{
    ::dbtools::throwFunctionNotSupportedSQLException("rowUpdated not supported in firebird",
                                                  *this);
    return false;
}
 
void SAL_CALL OResultSet::refreshRow()
{
    ::dbtools::throwFunctionNotSupportedSQLException("refreshRow not supported in firebird",
                                                  *this);
}
 
 
void SAL_CALL OResultSet::cancel(  )
{
    MutexGuard aGuard(m_rMutex);
    checkDisposed(OResultSet_BASE::rBHelper.bDisposed);
 
}
 
//----- OIdPropertyArrayUsageHelper ------------------------------------------
IPropertyArrayHelper* OResultSet::createArrayHelper() const
{
    Sequence< Property > aProperties;
    describeProperties(aProperties);
    return new ::cppu::OPropertyArrayHelper(aProperties);
}
 
IPropertyArrayHelper & OResultSet::getInfoHelper()
{
    return *getArrayHelper();
}
 
void SAL_CALL OResultSet::acquire() noexcept
{
    OResultSet_BASE::acquire();
}
 
void SAL_CALL OResultSet::release() noexcept
{
    OResultSet_BASE::release();
}
 
uno::Reference< css::beans::XPropertySetInfo > SAL_CALL OResultSet::getPropertySetInfo(  )
{
    return ::cppu::OPropertySetHelper::createPropertySetInfo(getInfoHelper());
}
 
// ---- XServiceInfo -----------------------------------------------------------
OUString SAL_CALL OResultSet::getImplementationName()
{
    return "com.sun.star.sdbcx.firebird.ResultSet";
}
 
Sequence< OUString > SAL_CALL OResultSet::getSupportedServiceNames()
{
    return {"com.sun.star.sdbc.ResultSet","com.sun.star.sdbcx.ResultSet"};
}
 
sal_Bool SAL_CALL OResultSet::supportsService(const OUString& _rServiceName)
{
    return cppu::supportsService(this, _rServiceName);
}
 
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