106 lines
2.8 KiB
C++
106 lines
2.8 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Microsoft WMIOLE DB Provider
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//
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// (C) Copyright 1999 Microsoft Corporation. All Rights Reserved.
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//
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// ICHAPROWSET.CPP IChapteredRowset interface implementation
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//
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///////////////////////////////////////////////////////////////////////////
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#include "headers.h"
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/////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Adds a reference to a chapter
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//
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// Returns one of the following values:
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// S_OK Method Succeeded
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// DB_E_BADCHAPTER The HCHAPTER given is invalid
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// E_FAIL General Error
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//
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/////////////////////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP CImpIChapteredRowset::AddRefChapter (HCHAPTER hChapter, DBREFCOUNT * pcRefCount)
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{
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HRESULT hr = E_UNEXPECTED;
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CSetStructuredExceptionHandler seh;
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TRY_BLOCK;
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// Serialize the object
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CAutoBlock cab(ROWSET->GetCriticalSection());
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// Clear ErrorInfo
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g_pCError->ClearErrorInfo();
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// Initialize the output variable
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if(pcRefCount != NULL)
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{
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*pcRefCount = -1;
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}
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if((m_pObj->m_bIsChildRs == TRUE && hChapter == DB_NULL_HCHAPTER) || (LONG_PTR)hChapter < 0 ||
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m_pObj->m_bIsChildRs == FALSE && hChapter != 0)
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{
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hr = DB_E_BADCHAPTER;
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}
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else
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{
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hr = m_pObj->AddRefChapter(hChapter,pcRefCount);
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}
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hr = hr == S_OK ? hr :g_pCError->PostHResult(hr,&IID_IChapteredRowset);
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CATCH_BLOCK_HRESULT(hr,L"IChapteredRowset::AddRefChapter");
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return hr;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Releases a reference to the chapter
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//
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// Returns one of the following values:
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// S_OK Method Succeeded
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// DB_E_BADCHAPTER The HCHAPTER given is invalid
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// E_FAIL General Error
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//
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/////////////////////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP CImpIChapteredRowset::ReleaseChapter (HCHAPTER hChapter,DBREFCOUNT * pcRefCount)
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{
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HRESULT hr = E_UNEXPECTED;
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CSetStructuredExceptionHandler seh;
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TRY_BLOCK;
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// Serialize the object
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CAutoBlock cab(ROWSET->GetCriticalSection());
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// Clear ErrorInfo
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g_pCError->ClearErrorInfo();
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// Initialize the output variable
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if(pcRefCount != NULL)
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{
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*pcRefCount = -1;
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}
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if((m_pObj->m_bIsChildRs == TRUE && hChapter == DB_NULL_HCHAPTER) || (LONG_PTR)hChapter < 0 ||
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m_pObj->m_bIsChildRs == FALSE && hChapter != 0)
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{
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hr = DB_E_BADCHAPTER;
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}
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else
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{
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hr = m_pObj->ReleaseRefChapter(hChapter,pcRefCount);
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}
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hr = hr == S_OK ? hr :g_pCError->PostHResult(hr,&IID_IChapteredRowset);
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CATCH_BLOCK_HRESULT(hr,L"IChapteredRowset::ReleaseChapter");
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return hr;
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}
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