/**************************************************************
 * 
 * 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_DBASE_INDEXITER_HXX_
#define _CONNECTIVITY_DBASE_INDEXITER_HXX_

#include "file/fcode.hxx"
#include "dbase/DIndex.hxx"
#include "dbase/dindexnode.hxx"

namespace connectivity
{
	namespace dbase
	{
		//==================================================================
		// IndexIterator
		//==================================================================
		class OIndexIterator
		{
		protected:
			file::OBoolOperator*	m_pOperator;
			const file::OOperand* 	m_pOperand;
			ODbaseIndex*			m_pIndex;
			ONDXPagePtr				m_aRoot,
									m_aCurLeaf;
			sal_uInt16					m_nCurNode;

		protected:
			sal_uIntPtr Find(sal_Bool bFirst);
			sal_uIntPtr GetCompare(sal_Bool bFirst);
			sal_uIntPtr GetLike(sal_Bool bFirst);
			sal_uIntPtr GetNull(sal_Bool bFirst);
			sal_uIntPtr GetNotNull(sal_Bool bFirst);

			ONDXKey* GetFirstKey(ONDXPage* pPage,
								const file::OOperand& rKey);
			ONDXKey* GetNextKey();
			ODbaseIndex* GetIndex() const {return m_pIndex;}


		public:
			OIndexIterator(ODbaseIndex* pInd,
							file::OBoolOperator* pOp,
							const file::OOperand* pOper)
				:m_pOperator(pOp)
				,m_pOperand(pOper)
				,m_pIndex(pInd)
				,m_nCurNode(NODE_NOTFOUND)
			{
				pInd->acquire();
			}

			virtual ~OIndexIterator();
			sal_uIntPtr First();
			sal_uIntPtr Next();

		};
	}
}
#endif // _CONNECTIVITY_DBASE_INDEXITER_HXX_