You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
3.9 KiB
152 lines
3.9 KiB
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (c) 1999, Microsoft Corp. All rights reserved.
|
|
//
|
|
// FILE
|
|
//
|
|
// enumerators.cpp
|
|
//
|
|
// SYNOPSIS
|
|
//
|
|
// Defines the class Enumerators.
|
|
//
|
|
// MODIFICATION HISTORY
|
|
//
|
|
// 02/25/1999 Original version.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include <windows.h>
|
|
#include <enumerators.h>
|
|
#include <iasdb.h>
|
|
#include <simtable.h>
|
|
|
|
Enumerators::~Enumerators() throw ()
|
|
{
|
|
for ( ; next != end; ++next)
|
|
{
|
|
SysFreeString(next->name);
|
|
}
|
|
|
|
CoTaskMemFree(begin);
|
|
}
|
|
|
|
HRESULT Enumerators::getEnumerators(
|
|
LONG id,
|
|
VARIANT* pNames,
|
|
VARIANT* pValues
|
|
) throw ()
|
|
{
|
|
VariantInit(pNames);
|
|
VariantInit(pValues);
|
|
|
|
HRESULT hr = getEnumerators(
|
|
id,
|
|
&V_ARRAY(pNames),
|
|
&V_ARRAY(pValues)
|
|
);
|
|
|
|
if (SUCCEEDED(hr) && V_ARRAY(pNames))
|
|
{
|
|
V_VT(pNames) = VT_ARRAY | VT_VARIANT;
|
|
V_VT(pValues) = VT_ARRAY | VT_VARIANT;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT Enumerators::getEnumerators(
|
|
LONG id,
|
|
LPSAFEARRAY* pNames,
|
|
LPSAFEARRAY* pValues
|
|
) throw ()
|
|
{
|
|
// Initialize the out parameters.
|
|
*pNames = *pValues = NULL;
|
|
|
|
// If this is less than next, it must not be an enumerator.
|
|
if (id < next->enumerates) { return S_OK; }
|
|
|
|
// If this is greater than next, we skipped one.
|
|
if (id > next->enumerates) { return E_INVALIDARG; }
|
|
|
|
// Find the range of enumerations for this id.
|
|
Enumeration* last = next;
|
|
do { ++last; } while (last->enumerates == id);
|
|
ULONG num = (ULONG)(last - next);
|
|
|
|
// Create a SAFEARRAY to hold the names.
|
|
*pNames = SafeArrayCreateVector(VT_VARIANT, 0, num);
|
|
if (*pNames == NULL) { return E_OUTOFMEMORY; }
|
|
|
|
// Create a SAFEARRAY to hold the values.
|
|
*pValues = SafeArrayCreateVector(VT_VARIANT, 0, num);
|
|
if (*pValues == NULL)
|
|
{
|
|
SafeArrayDestroy(*pNames);
|
|
*pNames = NULL;
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
|
|
// Fill in the VARIANTs in the array.
|
|
VARIANT* name = (VARIANT*)(*pNames)->pvData;
|
|
VARIANT* value = (VARIANT*)(*pValues)->pvData;
|
|
for ( ; next != last; ++next, ++name, ++value)
|
|
{
|
|
VariantInit(name);
|
|
V_VT(name) = VT_BSTR;
|
|
V_BSTR(name) = next->name;
|
|
|
|
VariantInit(value);
|
|
V_VT(value) = VT_I4;
|
|
V_I4(value) = next->value;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT Enumerators::initialize(IUnknown* session) throw ()
|
|
{
|
|
HRESULT hr;
|
|
LONG count;
|
|
hr = IASExecuteSQLFunction(
|
|
session,
|
|
L"SELECT Count(*) AS X From Enumerators;",
|
|
&count
|
|
);
|
|
if (FAILED(hr)) { return hr; }
|
|
|
|
CComPtr<IRowset> rowset;
|
|
hr = IASExecuteSQLCommand(
|
|
session,
|
|
L"SELECT Name, Enumerates, Value FROM Enumerators "
|
|
L"ORDER BY Enumerates, Value;",
|
|
&rowset
|
|
);
|
|
if (FAILED(hr)) { return hr; }
|
|
|
|
CSimpleTable table;
|
|
hr = table.Attach(rowset);
|
|
if (FAILED(hr)) { return hr; }
|
|
|
|
// Allocate one extra slot for the sentinel.
|
|
begin = (Enumeration*)CoTaskMemAlloc((count + 1) * sizeof(Enumeration));
|
|
if (!begin) { return E_OUTOFMEMORY; }
|
|
|
|
// Iterate through the rowset.
|
|
for (end = begin; count-- && !table.MoveNext(); ++end)
|
|
{
|
|
end->enumerates = *(PLONG)table.GetValue(2);
|
|
end->value = *(PLONG)table.GetValue(3);
|
|
end->name = SysAllocString((PCWSTR)table.GetValue(1));
|
|
if (!end->name) { return E_OUTOFMEMORY; }
|
|
}
|
|
|
|
// Set the sentinel.
|
|
end->enumerates = MAXLONG;
|
|
|
|
// We start at the beginning.
|
|
next = begin;
|
|
|
|
return S_OK;
|
|
}
|