libreoffice/connectivity/source/inc/file/fcomp.hxx

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: fcomp.hxx,v $
 * $Revision: 1.14 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/
#ifndef _CONNECTIVITY_FILE_FCOMP_HXX_
#define _CONNECTIVITY_FILE_FCOMP_HXX_

#include "file/fcode.hxx"
#include "file/filedllapi.hxx"
#ifndef _LIST_
#include <list>
#endif

namespace connectivity
{
    class OSQLParseNode;
    namespace file
    {
        class OCode;
        class OOperand;
        class OSQLAnalyzer;
        typedef::std::vector<OCode*> OCodeList;

        class OOO_DLLPUBLIC_FILE OPredicateCompiler : public ::vos::OReference
        {
            friend class OPredicateInterpreter;
            friend class OSQLAnalyzer;

            OCodeList                               m_aCodeList;
            OFileColumns                            m_orgColumns; // in filecurs this are the filecolumns
            OSQLAnalyzer*                           m_pAnalyzer;
            ::com::sun::star::uno::Reference< ::com::sun::star::container::XNameAccess> m_xIndexes;
            sal_Int32                               m_nParamCounter;
            sal_Bool                                m_bORCondition;
        public:
            OPredicateCompiler(OSQLAnalyzer* pAnalyzer);

            virtual ~OPredicateCompiler();

            inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW( () )
                { return ::rtl_allocateMemory( nSize ); }
            inline static void * SAL_CALL operator new( size_t /*nSize*/,void* _pHint ) SAL_THROW( () )
                { return _pHint; }
            inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW( () )
                { ::rtl_freeMemory( pMem ); }
            inline static void SAL_CALL operator delete( void * /*pMem*/,void* /*_pHint*/ ) SAL_THROW( () )
                {  }
            void dispose();

            void start(connectivity::OSQLParseNode* pSQLParseNode);
            OOperand* execute(connectivity::OSQLParseNode* pPredicateNode);

            void Clean();
            sal_Bool isClean() const {return m_aCodeList.empty();}
            sal_Bool hasCode() const {return !isClean();}
            sal_Bool hasORCondition() const {return m_bORCondition;}
            void     setOrigColumns(const OFileColumns& rCols) { m_orgColumns = rCols; }
            const OFileColumns getOrigColumns() const { return m_orgColumns; }
        protected:
            OOperand* execute_COMPARE(connectivity::OSQLParseNode* pPredicateNode) throw( ::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
            OOperand* execute_LIKE(connectivity::OSQLParseNode* pPredicateNode) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
            OOperand* execute_BETWEEN(connectivity::OSQLParseNode* pPredicateNode) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
            OOperand* execute_ISNULL(connectivity::OSQLParseNode* pPredicateNode) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
            OOperand* execute_Operand(connectivity::OSQLParseNode* pPredicateNode) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
            OOperand* execute_Fold(OSQLParseNode* pPredicateNode) throw( ::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
            OOperand* executeFunction(OSQLParseNode* pPredicateNode) throw( ::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
        };


        class OOO_DLLPUBLIC_FILE OPredicateInterpreter :
            public ::vos::OReference
        {
            OCodeStack          m_aStack;
            ::vos::ORef<OPredicateCompiler> m_rCompiler;

        public:
            OPredicateInterpreter(const ::vos::ORef<OPredicateCompiler>& rComp) : m_rCompiler(rComp){}
            virtual ~OPredicateInterpreter();

            sal_Bool    evaluate(OCodeList& rCodeList);
            void        evaluateSelection(OCodeList& rCodeList,ORowSetValueDecoratorRef& _rVal);

            inline sal_Bool start()
            {
                return evaluate(m_rCompiler->m_aCodeList);
            }

            inline void startSelection(ORowSetValueDecoratorRef& _rVal)
            {
                return evaluateSelection(m_rCompiler->m_aCodeList,_rVal);
            }


        };
    }
}
#endif // _CONNECTIVITY_FILE_FCOMP_HXX_