libreoffice/connectivity/source/drivers/odbc/OResultSetMetaData.cxx

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: OResultSetMetaData.cxx,v $
 *
 *  $Revision: 1.18 $
 *
 *  last change: $Author: hr $ $Date: 2006-06-20 01:56:26 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#ifndef _CONNECTIVITY_ODBC_ORESULTSETMETADATA_HXX_
#include "odbc/OResultSetMetaData.hxx"
#endif
#ifndef _CONNECTIVITY_OTOOLS_HXX_
#include "odbc/OTools.hxx"
#endif

using namespace connectivity::odbc;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
using namespace com::sun::star::sdbc;

// -------------------------------------------------------------------------
OResultSetMetaData::~OResultSetMetaData()
{
}
// -------------------------------------------------------------------------
::rtl::OUString OResultSetMetaData::getCharColAttrib(sal_Int32 _column,sal_Int32 ident) throw(SQLException, RuntimeException)
{
    sal_Int32 column = _column;
    if(_column <(sal_Int32) m_vMapping.size()) // use mapping
        column = m_vMapping[_column];

    SQLSMALLINT BUFFER_LEN = 128;
    char *pName = new char[BUFFER_LEN+1];
    SQLSMALLINT nRealLen=0;
    SQLRETURN nRet = N3SQLColAttribute(m_aStatementHandle,
                                    (SQLUSMALLINT)column,
                                    (SQLUSMALLINT)ident,
                                    (SQLPOINTER)pName,
                                    BUFFER_LEN,
                                    &nRealLen,
                                    NULL
                                    );
    ::rtl::OUString sValue;
    if ( nRet == SQL_SUCCESS )
        sValue = ::rtl::OUString(pName,nRealLen,m_pConnection->getTextEncoding());
    delete [] pName;
    OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
    if(nRealLen > BUFFER_LEN)
    {
        pName = new char[nRealLen+1];
        nRet = N3SQLColAttribute(m_aStatementHandle,
                                    (SQLUSMALLINT)column,
                                    (SQLUSMALLINT)ident,
                                    (SQLPOINTER)pName,
                                    nRealLen,
                                    &nRealLen,
                                    NULL
                                    );
        if ( nRet == SQL_SUCCESS )
            sValue = ::rtl::OUString(pName,nRealLen,m_pConnection->getTextEncoding());
        delete [] pName;
        OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
    }

    return  sValue;
}
// -------------------------------------------------------------------------
sal_Int32 OResultSetMetaData::getNumColAttrib(sal_Int32 _column,sal_Int32 ident) throw(SQLException, RuntimeException)
{
    sal_Int32 column = _column;
    if(_column < (sal_Int32)m_vMapping.size()) // use mapping
        column = m_vMapping[_column];

    sal_Int32 nValue=0;
    OTools::ThrowException(m_pConnection,N3SQLColAttribute(m_aStatementHandle,
                                         (SQLUSMALLINT)column,
                                         (SQLUSMALLINT)ident,
                                         NULL,
                                         0,
                                         NULL,
                                         &nValue),m_aStatementHandle,SQL_HANDLE_STMT,*this);
    return nValue;
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getColumnDisplaySize( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_DISPLAY_SIZE);
}
// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OResultSetMetaData::getColumnType( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    sal_Int32 nType = 0;
    if(!m_bUseODBC2Types)
    {
        try
        {
            nType = getNumColAttrib(column,SQL_DESC_CONCISE_TYPE);
            if(nType == SQL_UNKNOWN_TYPE)
                nType = getNumColAttrib(column, SQL_DESC_TYPE);
            nType = OTools::MapOdbcType2Jdbc(nType);
        }
        catch(SQLException& ) // in this case we have an odbc 2.0 driver
        {
            m_bUseODBC2Types = sal_True;
            nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column,SQL_DESC_CONCISE_TYPE ));
        }
    }
    else
        nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column,SQL_DESC_CONCISE_TYPE ));


    return nType;
}
// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OResultSetMetaData::getColumnCount(  ) throw(SQLException, RuntimeException)
{
    if(m_nColCount != -1)
        return m_nColCount;
    sal_Int16 nNumResultCols=0;
    OTools::ThrowException(m_pConnection,N3SQLNumResultCols(m_aStatementHandle,&nNumResultCols),m_aStatementHandle,SQL_HANDLE_STMT,*this);
    return m_nColCount = nNumResultCols;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isCaseSensitive( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_CASE_SENSITIVE) == SQL_TRUE;
}
// -------------------------------------------------------------------------

::rtl::OUString SAL_CALL OResultSetMetaData::getSchemaName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getCharColAttrib(column,SQL_DESC_SCHEMA_NAME);
}
// -------------------------------------------------------------------------

::rtl::OUString SAL_CALL OResultSetMetaData::getColumnName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getCharColAttrib(column,SQL_DESC_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getTableName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getCharColAttrib(column,SQL_DESC_TABLE_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getCatalogName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getCharColAttrib(column,SQL_DESC_CATALOG_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getColumnTypeName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getCharColAttrib(column,SQL_DESC_TYPE_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getColumnLabel( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getCharColAttrib(column,SQL_DESC_LABEL);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getColumnServiceName( sal_Int32 /*column*/ ) throw(SQLException, RuntimeException)
{
    return ::rtl::OUString();
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isCurrency( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_FIXED_PREC_SCALE) == SQL_TRUE;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isAutoIncrement( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_AUTO_UNIQUE_VALUE) == SQL_TRUE;
}
// -------------------------------------------------------------------------


sal_Bool SAL_CALL OResultSetMetaData::isSigned( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_UNSIGNED) == SQL_FALSE;
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getPrecision( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    sal_Int32 nType = 0;
    try
    {
        nType = getNumColAttrib(column,SQL_DESC_PRECISION);
    }
    catch(const SQLException& ) // in this case we have an odbc 2.0 driver
    {
        m_bUseODBC2Types = sal_True;
        nType = getNumColAttrib(column,SQL_COLUMN_PRECISION );
    }
    return nType;
}
// -----------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getScale( sal_Int32 column ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException)
{
    sal_Int32 nType = 0;
    try
    {
        nType = getNumColAttrib(column,SQL_DESC_SCALE);
    }
    catch(const SQLException& ) // in this case we have an odbc 2.0 driver
    {
        m_bUseODBC2Types = sal_True;
        nType = getNumColAttrib(column,SQL_COLUMN_SCALE );
    }
    return nType;
}
// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OResultSetMetaData::isNullable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_NULLABLE);
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isSearchable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_SEARCHABLE) != SQL_PRED_NONE;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isReadOnly( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_READONLY;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isDefinitelyWritable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
;
}
// -------------------------------------------------------------------------
sal_Bool SAL_CALL OResultSetMetaData::isWritable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
}
// -------------------------------------------------------------------------