xref: /trunk/main/connectivity/source/inc/file/fcomp.hxx (revision 914d351e5f5b84e4342a86d6ab8d4aca7308b9bd)

/**************************************************************
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the 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 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 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)
            {
                evaluateSelection(m_rCompiler->m_aCodeList,_rVal);
            }


        };
    }
}
#endif // _CONNECTIVITY_FILE_FCOMP_HXX_