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52 lines
1002 B
52 lines
1002 B
///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1998, Microsoft Corp. All rights reserved.
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//
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// FILE
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//
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// rowset.cpp
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//
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// SYNOPSIS
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//
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// This file defines the class Rowset.
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//
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// MODIFICATION HISTORY
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//
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// 02/20/1998 Original version.
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// 04/21/1998 Get rid of unnecessary row assignment in moveNext().
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//
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///////////////////////////////////////////////////////////////////////////////
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#include <ias.h>
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#include <rowset.h>
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bool Rowset::moveNext()
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{
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_com_util::CheckError(releaseRow());
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DBCOUNTITEM numRows = 0;
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HROW* pRow = &row;
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HRESULT hr = rowset->GetNextRows(NULL, 0, 1, &numRows, &pRow);
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_com_util::CheckError(hr);
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return hr == S_OK && numRows == 1;
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}
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HRESULT Rowset::releaseRow() throw ()
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{
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if (row != NULL)
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{
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HRESULT hr = rowset->ReleaseRows(1, &row, NULL, NULL, NULL);
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row = NULL;
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return hr;
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}
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return S_OK;
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}
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