200 lines
6.5 KiB
C++
200 lines
6.5 KiB
C++
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/*************************************************************************
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* @doc SHROOM EXTERNAL API *
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* *
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* QUERYIMP.CPP *
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* *
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* Copyright (C) Microsoft Corporation 1997 *
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* All Rights reserved. *
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* *
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* This file contains the implementation of the index object *
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* *
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* *
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**************************************************************************
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* *
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* Written By : Erin Foxford *
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* Current Owner: erinfox *
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* *
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**************************************************************************/
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#include <atlinc.h>
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// MediaView (InfoTech) includes
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#include <mvopsys.h>
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#include <groups.h>
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#include <wwheel.h>
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#include <itquery.h>
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#include "queryimp.h"
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CITQuery::CITQuery() : m_dwFlags(0), m_wNear(8), m_pITGroup(NULL), m_cRows(0),
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m_lpszCommand(NULL)
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{
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m_pCommand = BlockInitiate((DWORD)65500, 0, 0, 0);
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MEMSET(&m_fcbkmsg, NULL, sizeof(FCALLBACK_MSG));
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}
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CITQuery::~CITQuery()
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{
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if (m_pCommand)
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BlockFree(m_pCommand);
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | SetResultCallback |
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* Sets callback structure containing ERR_FUNC MessageFunc member
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* that will be called periodically during query processing.
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*
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* @parm FCALLBACK_MSG* | pfcbkmsg | Pointer to callback structure.
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* @rvalue S_OK | The structure was successfully set.
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* @rvalue E_POINTER | pfcbkmsg was NULL
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* @rvalue E_BADPARAM | MessageFunc member of *pfcbkmsg was NULL.
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*
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********************************************************************/
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STDMETHODIMP CITQuery::SetResultCallback(FCALLBACK_MSG *pfcbkmsg)
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{
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if (pfcbkmsg == NULL)
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return (E_POINTER);
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if (pfcbkmsg->MessageFunc == NULL)
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return (E_BADPARAM);
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m_fcbkmsg = *pfcbkmsg;
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return (S_OK);
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | SetCommand |
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* Sets full-text query to be used when Search method is called.
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*
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* @parm LPCWSTR | lpszwCommand | Command to carry out
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* @rvalue S_OK | The command was successfully set
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*
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********************************************************************/
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STDMETHODIMP CITQuery::SetCommand(LPCWSTR lpszwCommand)
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{
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if (NULL == lpszwCommand)
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return E_INVALIDARG;
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if (m_pCommand)
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{
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BlockReset(m_pCommand);
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int cbData = (int) (2*(WSTRLEN(lpszwCommand)+1));
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if (NULL == (m_lpszCommand = (LPCWSTR) BlockCopy(m_pCommand, NULL, cbData, 0)))
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return E_OUTOFMEMORY;
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MEMCPY((LPVOID) m_lpszCommand, lpszwCommand, cbData);
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}
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else
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return E_OUTOFMEMORY; // something went wrong in ctor
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return S_OK;
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | SetOptions |
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* Sets options for searching
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*
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* @parm DWORD | dwFlag | Options, can be one or more of the following:
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*
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* @flag IMPLICIT_AND | Search terms are AND'd if no operator is specified
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* @flag IMPLICIT_OR | Search terms are OR'd if no operator is specified
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* @flag COMPOUNDWORD_PHRASE | Use PHRASE operator for compound words
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* @flag QUERYRESULT_RANK | Results are returned in ranked order
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* @flag QUERYRESULT_UIDSORT | Results are returned in UID order
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* @flag QUERYRESULT_SKIPOCCINFO | Only topic-level hit information is returned
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* @flag STEMMED_SEARCH | The search returns stemmed results
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* @flag RESULT_ASYNC | Results are returned asynchronously
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* @flag QUERY_GETTERMS | Return with each set of occurrence data a pointer to
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* the term string that the data is associated with.
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*
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* @rvalue S_OK | The options were successfully set
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*
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********************************************************************/
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STDMETHODIMP CITQuery::SetOptions(DWORD dwFlags)
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{
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m_dwFlags = dwFlags;
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return S_OK;
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | SetProximity |
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* Sets proximity value for searching with NEAR operator.
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*
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* @parm WORD | wNear | The number of words apart the search terms can
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* be to be considered "near". Default value is 8.
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*
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* @rvalue S_OK | The proximity value was successfully set
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*
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********************************************************************/
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STDMETHODIMP CITQuery::SetProximity(WORD wNear)
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{
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m_wNear = wNear;
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return S_OK;
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | SetGroup |
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* Sets group object to be used in filtering search results
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*
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* @parm IITGroup* | pITGroup | Pointer to group object
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*
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* @rvalue S_OK | The group object was successfully set
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* @comm If the existing query group is non-null, this method will
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* call Release() for the existing group before replacing it with the
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* new group object. The caller is responsible for calling AddRef before
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* setting the new group.
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********************************************************************/
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STDMETHODIMP CITQuery::SetGroup(IITGroup* piitGrp)
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{
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if (m_pITGroup != NULL)
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m_pITGroup->Release();
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m_pITGroup = piitGrp;
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return S_OK;
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | SetResultCount |
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* Sets maximum number of search hits to return
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*
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* @parm LONG | cRows | Maxium number of hits
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*
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* @rvalue S_OK | The proximity value was successfully set
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*
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********************************************************************/
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STDMETHODIMP CITQuery::SetResultCount(LONG cRows)
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{
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m_cRows = cRows;
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return S_OK;
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}
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/********************************************************************
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* @method STDMETHODIMP | IITQuery | ReInit |
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* Initializes query object to its default values
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*
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* @rvalue S_OK | The query object was successfully reinitialized
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*
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********************************************************************/
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STDMETHODIMP CITQuery::ReInit()
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{
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m_dwFlags = 0;
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m_wNear = 8;
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m_cRows = 0; // I use this as number of hits, where 0 means all
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if (m_pCommand)
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BlockReset(m_pCommand);
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SetGroup(NULL);
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m_lpszCommand = NULL;
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return S_OK;
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}
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