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xpathdbvaluer.cpp

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//============================================================================= 
//
// XDFLengine library
//
//-----------------------------------------------------------------------------
//  XPATHDBVALUER.CPP
//-----------------------------------------------------------------------------
//_____________________________________________________________________________
//
//  Copyright (C) 2003 Guillaume Baurand. All Rights Reserved.
//
//  This file is part of the XDFLengine project.
//
//  The XDFLengine is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program 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 General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
//
//  For more information, 
//      contact  : guillaume@baurand.net 
//      or visit : http://xdflengine.sourceforge.net
//
//============================================================================= 

#   include "xpathdbvaluer.hpp"

BEGIN_XDFLENGINE_NS

//=============================================================================
//  CLASS XPATHDBVALUER
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    //_________________________________________________________________________
    //  XPATHDBVALUER
    //-------------------------------------------------------------------------
    XpathDBValuer::XpathDBValuer()
    {
        m_pSAXDBNodeRoot=0;
    }

    //_________________________________________________________________________
    //  SETROOT
    //-------------------------------------------------------------------------
    void XpathDBValuer::setRoot(DBObjectNode* p_pSAXDBNodeRoot)
    {
        DEBUG_FUNC(XpathDBValuer::setRoot)
        m_pSAXDBNodeRoot=p_pSAXDBNodeRoot;
    }

    //_________________________________________________________________________
    //  calculateexpression
    //-------------------------------------------------------------------------
    char* XpathDBValuer::calculateExpression(const char* p_pszExpression)
    {
        DBObject*   l_pSelected;
        
        DEBUG_FUNC(XpathDBValuer::calculateExpression)

        if(m_pSAXDBNodeRoot)
        {

            l_pSelected=m_pSAXDBNodeRoot->selectSingleNode( p_pszExpression);

            if(l_pSelected)
            {
                if( l_pSelected->getType() == DBOBJECTTYPE_FIELD) return copyCharBuffer( ((DBObjectField*) l_pSelected)->getValue() );
                if( l_pSelected->getType() == DBOBJECTTYPE_NODE) return copyCharBuffer( ((DBObjectNode*) l_pSelected)->getField( (unsigned int) 0)->getValue() );
            }
        
            return copyCharBuffer( DBOBJDEFFIELD_NOVALUE);
        }
        else return 0;
       
    }

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//=============================================================================

END_XDFLENGINE_NS

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