/******************************************************************************/
/*																										*/
/*	Name		:	QUERY.H   	  																   */
/* Date     :  10/13/1997                                                     */
/* Author   :  Jim Susoy                                                      */
/* Notice   :  (C) 1997 Qualcomm, Inc. - All Rights Reserved                  */
/* Copyright (c) 2016, Computer History Museum 
All rights reserved. 
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 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 
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   disclaimer in the documentation and/or other materials provided with the distribution. 
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/*	Desc.		:	IDSPQuery interface defintiions      									*/
/*																										*/
/******************************************************************************/
#ifndef __QUERY_H__
#define __QUERY_H__

#include <stdio.h>
#include "IList.h"
#include "ISched.h"
#include "dspapi.h"
#include "database.h"

class CQuery : public IDSPQuery
{
public:	
   /* IUnknown																						*/
	virtual HRESULT		__stdcall QueryInterface(const IID& iid, void** ppv);
	virtual ULONG			__stdcall AddRef();
	virtual ULONG			__stdcall Release();
   /* IDSPQuery																					*/
	virtual HRESULT		__stdcall InitQuery(LPSTR pszSearch,DWORD dwFlags, DS_FIELD nField);
	virtual HRESULT		__stdcall SetSearchBase(LPSTR pszSearchBase);
	virtual void        	__stdcall Start(DBQUERYCB pCB,LPVOID pCtx);
	virtual void			__stdcall WaitForRecord(DBQUERYCB pCB,LPVOID pCtx);
	virtual QUERY_STATUS	__stdcall GetRecord(IDSPRecord **ppRecord);
	virtual void         __stdcall Cancel();
	virtual QUERY_STATUS __stdcall GetLastError();
	virtual HRESULT     	__stdcall GetErrorString(QUERY_STATUS nCode,LPSTR pszBuffer,int nlen);

   /* CQuery                                                                  */
	CQuery(CDatabase *pServer);
	~CQuery();

   static HRESULT       __stdcall CreateInstance(IUnknown **pUnk,CDatabase *pServer);

protected:
   virtual BOOL         __stdcall FuzzyCompare(LPSTR lpszCheck);
   virtual BOOL         __stdcall Match(IDSPRecord *pRec);

   LONG					m_cRef;				/* Reference count							*/
   CDatabase         *m_pDatabase;     /* The "database" we are querying      */
   ISchedule         *m_pSched;        /* Our scheduler object                */
   LPSTR             m_pszSearch;      /* String to search for                */
   LPLTBL            m_pCur;           /* Current matching record             */
   QUERY_STATUS      m_nLastError;     /* Status of last operation            */
   DWORD             m_dwFlags;        /* Query flags                         */
   DS_FIELD          m_nField;         /* Database field to search            */
   IListMan          *m_pRecordList;   /* List of records                     */
   LPRECENT          m_pRE;            /* Next record                         */
   BOOL              m_bCancled;       /* Operation canceled                  */
};

#endif




