Quelle  resultcolumn.cxx   Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * This file incorporates work covered by the following license notice:
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 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
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#include "resultcolumn.hxx"
#include <com/sun/star/beans/PropertyAttribute.hpp>
#include <com/sun/star/sdbc/SQLException.hpp>
#include <com/sun/star/sdbc/DataType.hpp>
#include <com/sun/star/sdbc/ColumnValue.hpp>
#include <com/sun/star/sdbc/XRow.hpp>
#include <comphelper/diagnose_ex.hxx>
#include <stringconstants.hxx>
#include <strings.hxx>

using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::uno;
using namespace ::osl;
using namespace ::comphelper;
using namespace ::cppu;
using namespace dbaccess;


OResultColumn::OResultColumn( const Reference < XResultSetMetaData >& _xMetaData, sal_Int32 _nPos,
        const Reference< XDatabaseMetaData >& _rxDBMeta )
    :OColumn( true )
    ,m_xMetaData( _xMetaData )
    ,m_xDBMetaData( _rxDBMeta )
    ,m_nPos( _nPos )
{
}

void OResultColumn::impl_determineIsRowVersion_nothrow()
{
    if ( m_aIsRowVersion.hasValue() )
        return;
    m_aIsRowVersion <<= false;

    OSL_ENSURE( m_xDBMetaData.is(), "OResultColumn::impl_determineIsRowVersion_nothrow: no DBMetaData!" );
    if ( !m_xDBMetaData.is() )
        return;

    try
    {
        OUString sCatalog, sSchema, sTable, sColumnName;
        getPropertyValue( PROPERTY_CATALOGNAME ) >>= sCatalog;
        getPropertyValue( PROPERTY_SCHEMANAME ) >>= sSchema;
        getPropertyValue( PROPERTY_TABLENAME ) >>= sTable;
        getPropertyValue( PROPERTY_NAME ) >>= sColumnName;

        try
        {
            Reference< XResultSet > xVersionColumns = m_xDBMetaData->getVersionColumns(
                Any( sCatalog ), sSchema, sTable );
            if ( xVersionColumns.is() ) // allowed to be NULL
            {
                Reference< XRow > xResultRow( xVersionColumns, UNO_QUERY_THROW );
                while ( xVersionColumns->next() )
                {
                    if ( xResultRow->getString( 2 ) == sColumnName )
                    {
                        m_aIsRowVersion <<= true;
                        break;
                    }
                }
                Reference< XCloseable > xResultCloseable( xVersionColumns, UNO_QUERY_THROW );
                xResultCloseable->close();
            }
        }
        catch(const SQLException&)
        {
        }
    }
    catch( const Exception& )
    {
        DBG_UNHANDLED_EXCEPTION("dbaccess");
    }
}

OResultColumn::~OResultColumn()
{
}

// css::lang::XTypeProvider
Sequence< sal_Int8 > OResultColumn::getImplementationId()
{
    return css::uno::Sequence<sal_Int8>();
}

// XServiceInfo
OUString OResultColumn::getImplementationName(  )
{
    return u"com.sun.star.sdb.OResultColumn"_ustr;
}

Sequence< OUString > OResultColumn::getSupportedServiceNames(  )
{
    return { SERVICE_SDBCX_COLUMN, SERVICE_SDB_RESULTCOLUMN };
}

// OComponentHelper
void OResultColumn::disposing()
{
    OColumn::disposing();

    MutexGuard aGuard(m_aMutex);
    m_xMetaData = nullptr;
}

// comphelper::OPropertyArrayUsageHelper
::cppu::IPropertyArrayHelper* OResultColumn::createArrayHelper( ) const
{
    return new ::cppu::OPropertyArrayHelper
    {
        {
            { PROPERTY_CATALOGNAME, PROPERTY_ID_CATALOGNAME, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_DISPLAYSIZE, PROPERTY_ID_DISPLAYSIZE, cppu::UnoType<sal_Int32>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISAUTOINCREMENT, PROPERTY_ID_ISAUTOINCREMENT, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISCASESENSITIVE, PROPERTY_ID_ISCASESENSITIVE, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISCURRENCY, PROPERTY_ID_ISCURRENCY, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISDEFINITELYWRITABLE, PROPERTY_ID_ISDEFINITELYWRITABLE, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISNULLABLE, PROPERTY_ID_ISNULLABLE, cppu::UnoType<sal_Int32>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISREADONLY, PROPERTY_ID_ISREADONLY, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISROWVERSION, PROPERTY_ID_ISROWVERSION, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISSEARCHABLE, PROPERTY_ID_ISSEARCHABLE, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISSIGNED, PROPERTY_ID_ISSIGNED, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_ISWRITABLE, PROPERTY_ID_ISWRITABLE, cppu::UnoType<bool>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_LABEL, PROPERTY_ID_LABEL, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_NAME, PROPERTY_ID_NAME, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_PRECISION, PROPERTY_ID_PRECISION, cppu::UnoType<sal_Int32>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_SCALE, PROPERTY_ID_SCALE, cppu::UnoType<sal_Int32>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_SCHEMANAME, PROPERTY_ID_SCHEMANAME, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_SERVICENAME, PROPERTY_ID_SERVICENAME, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_TABLENAME, PROPERTY_ID_TABLENAME, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_TYPE, PROPERTY_ID_TYPE, cppu::UnoType<sal_Int32>::get(), css::beans::PropertyAttribute::READONLY },
            { PROPERTY_TYPENAME, PROPERTY_ID_TYPENAME, cppu::UnoType<OUString>::get(), css::beans::PropertyAttribute::READONLY }
        }
    };
}

// cppu::OPropertySetHelper
::cppu::IPropertyArrayHelper& OResultColumn::getInfoHelper()
{
    return *static_cast< ::comphelper::OPropertyArrayUsageHelper< OResultColumn >* >(this)->getArrayHelper();
}

namespace
{
    template< typename T >
    void obtain( Any& _out_rValue, ::std::optional< T > & _rCache, const sal_Int32 _nPos, const Reference < XResultSetMetaData >& _rxResultMeta, T (SAL_CALL XResultSetMetaData::*Getter)( sal_Int32 ) )
    {
        if ( !_rCache )
            _rCache = (_rxResultMeta.get()->*Getter)(_nPos);
        _out_rValue <<= *_rCache;
    }
}

void OResultColumn::getFastPropertyValue( Any& rValue, sal_Int32 nHandle ) const
{
    try
    {
        if ( OColumn::isRegisteredProperty( nHandle ) )
        {
            OColumn::getFastPropertyValue( rValue, nHandle );
        }
        else
        {
            switch (nHandle)
            {
                case PROPERTY_ID_ISROWVERSION:
                    const_cast< OResultColumn* >( this )->impl_determineIsRowVersion_nothrow();
                    rValue = m_aIsRowVersion;
                    break;
                case PROPERTY_ID_TABLENAME:
                    rValue <<= m_xMetaData->getTableName(m_nPos);
                    break;
                case PROPERTY_ID_SCHEMANAME:
                    rValue <<= m_xMetaData->getSchemaName(m_nPos);
                    break;
                case PROPERTY_ID_CATALOGNAME:
                    rValue <<= m_xMetaData->getCatalogName(m_nPos);
                    break;
                case PROPERTY_ID_ISSIGNED:
                    obtain( rValue, m_isSigned, m_nPos, m_xMetaData, &XResultSetMetaData::isSigned );
                    break;
                case PROPERTY_ID_ISCURRENCY:
                    obtain( rValue, m_isCurrency, m_nPos, m_xMetaData, &XResultSetMetaData::isCurrency );
                    break;
                case PROPERTY_ID_ISSEARCHABLE:
                    obtain( rValue, m_bSearchable, m_nPos, m_xMetaData, &XResultSetMetaData::isSearchable );
                    break;
                case PROPERTY_ID_ISCASESENSITIVE:
                    obtain( rValue, m_isCaseSensitive, m_nPos, m_xMetaData, &XResultSetMetaData::isCaseSensitive );
                    break;
                case PROPERTY_ID_ISREADONLY:
                    obtain( rValue, m_isReadOnly, m_nPos, m_xMetaData, &XResultSetMetaData::isReadOnly );
                    break;
                case PROPERTY_ID_ISWRITABLE:
                    obtain( rValue, m_isWritable, m_nPos, m_xMetaData, &XResultSetMetaData::isWritable );
                    break;
                case PROPERTY_ID_ISDEFINITELYWRITABLE:
                    obtain( rValue, m_isDefinitelyWritable, m_nPos, m_xMetaData, &XResultSetMetaData::isDefinitelyWritable );
                    break;
                case PROPERTY_ID_ISAUTOINCREMENT:
                    obtain( rValue, m_isAutoIncrement, m_nPos, m_xMetaData, &XResultSetMetaData::isAutoIncrement );
                    break;
                case PROPERTY_ID_SERVICENAME:
                    rValue <<= m_xMetaData->getColumnServiceName(m_nPos);
                    break;
                case PROPERTY_ID_LABEL:
                    obtain( rValue, m_sColumnLabel, m_nPos, m_xMetaData, &XResultSetMetaData::getColumnLabel );
                    break;
                case PROPERTY_ID_DISPLAYSIZE:
                    obtain( rValue, m_nColumnDisplaySize, m_nPos, m_xMetaData, &XResultSetMetaData::getColumnDisplaySize );
                    break;
                case PROPERTY_ID_TYPE:
                    obtain( rValue, m_nColumnType, m_nPos, m_xMetaData, &XResultSetMetaData::getColumnType );
                    break;
                case PROPERTY_ID_PRECISION:
                    obtain( rValue, m_nPrecision, m_nPos, m_xMetaData, &XResultSetMetaData::getPrecision );
                    break;
                case PROPERTY_ID_SCALE:
                    obtain( rValue, m_nScale, m_nPos, m_xMetaData, &XResultSetMetaData::getScale );
                    break;
                case PROPERTY_ID_ISNULLABLE:
                    obtain( rValue, m_isNullable, m_nPos, m_xMetaData, &XResultSetMetaData::isNullable );
                    break;
                case PROPERTY_ID_TYPENAME:
                    rValue <<= m_xMetaData->getColumnTypeName(m_nPos);
                    break;
                default:
                    OSL_FAIL( "OResultColumn::getFastPropertyValue: unknown property handle!" );
                    break;
            }
        }
    }
    catch (SQLException& )
    {
        // default handling if we caught an exception
        switch (nHandle)
        {
            case PROPERTY_ID_LABEL:
            case PROPERTY_ID_TYPENAME:
            case PROPERTY_ID_SERVICENAME:
            case PROPERTY_ID_TABLENAME:
            case PROPERTY_ID_SCHEMANAME:
            case PROPERTY_ID_CATALOGNAME:
                // empty string'S
                rValue <<= OUString();
                break;
            case PROPERTY_ID_ISROWVERSION:
            case PROPERTY_ID_ISAUTOINCREMENT:
            case PROPERTY_ID_ISWRITABLE:
            case PROPERTY_ID_ISDEFINITELYWRITABLE:
            case PROPERTY_ID_ISCASESENSITIVE:
            case PROPERTY_ID_ISSEARCHABLE:
            case PROPERTY_ID_ISCURRENCY:
            case PROPERTY_ID_ISSIGNED:
            {
                rValue <<= false;
            }   break;
            case PROPERTY_ID_ISREADONLY:
            {
                rValue <<= true;
            }   break;
            case PROPERTY_ID_SCALE:
            case PROPERTY_ID_PRECISION:
            case PROPERTY_ID_DISPLAYSIZE:
                rValue <<= sal_Int32(0);
                break;
            case PROPERTY_ID_TYPE:
                rValue <<= sal_Int32(DataType::SQLNULL);
                break;
            case PROPERTY_ID_ISNULLABLE:
                rValue <<= ColumnValue::NULLABLE_UNKNOWN;
                break;
        }
    }
}

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