96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
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///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2000, Microsoft Corp. All rights reserved.
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//
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// FILE
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//
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// dsproperty.h
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//
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// SYNOPSIS
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//
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// This file defines the class DSProperty.
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//
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// MODIFICATION HISTORY
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//
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// 04/13/2000 Original version.
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// 04/13/2000 Port to ATL 3.0
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//
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///////////////////////////////////////////////////////////////////////////////
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#include <ias.h>
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#include <iasutil.h>
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#include <dsproperty.h>
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#include <varvec.h>
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#include <memory>
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DSProperty* DSProperty::createInstance(
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const _bstr_t& propName,
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const _variant_t& propValue,
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IDataStoreObject* memberOf
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)
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{
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// Create a new CComObject.
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CComObject<DSProperty>* newObj;
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_com_util::CheckError(CComObject<DSProperty>::CreateInstance(&newObj));
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// Cast to a DBObject and store it in an auto_ptr in case we throw an
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// exception.
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std::auto_ptr<DSProperty> prop(newObj);
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// Set the members.
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prop->name = propName;
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prop->value = propValue;
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prop->owner = memberOf;
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// Release and return.
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return prop.release();
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}
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STDMETHODIMP DSProperty::get_Name(BSTR* pVal)
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{
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if (pVal == NULL) { return E_INVALIDARG; }
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*pVal = SysAllocString(name);
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return *pVal ? S_OK : E_OUTOFMEMORY;
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}
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STDMETHODIMP DSProperty::get_Value(VARIANT* pVal)
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{
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if (pVal == NULL) { return E_INVALIDARG; }
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return VariantCopy(pVal, &value);
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}
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STDMETHODIMP DSProperty::get_ValueEx(VARIANT* pVal)
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{
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if (pVal == NULL) { return E_INVALIDARG; }
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// Is the value an array ?
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if (V_VT(&value) != (VT_VARIANT | VT_ARRAY))
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{
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// No, so we have to convert it to one.
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try
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{
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// Make sure we can sucessfully copy the VARIANT, ...
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_variant_t tmp(value);
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// ... then allocate a SAFEARRAY with a single element.
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CVariantVector<VARIANT> multi(pVal, 1);
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// Load the single value in.
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multi[0] = tmp.Detach();
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}
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CATCH_AND_RETURN()
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return S_OK;
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}
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return VariantCopy(pVal, &value);
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}
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STDMETHODIMP DSProperty::get_Owner(IDataStoreObject** pVal)
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{
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if (pVal == NULL) { return E_INVALIDARG; }
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if (*pVal = owner) { (*pVal)->AddRef(); }
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return S_OK;
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}
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