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