xref: /aoo4110/main/connectivity/source/inc/file/fcomp.hxx (revision b1cdbd2c)

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 *
 * 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
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#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_