读取架构

大多数提供程序都支持 Active Directory 附带的架构。 架构包含类和属性定义。 ADSI 在“Provider://schema”中对架构进行了抽象化。 每个对象都带有定义其类别的架构位置。 你可以使用 IADs::get_Class 属性方法来获取这些信息。

要绑定到特定域上的架构容器，请执行以下操作：

Dim SchemaContainer As Object
Set SchemaContainer = GetObject("LDAP://Fabrikam/Schema")

hr = ADsGetObject(L"LDAP://Fabrikam/Schema", IID_IADsContainer, (void**) &pSchema );

要列出架构容器中的信息，请绑定到容器并枚举容器中的每个对象，如下图所示：

Dim prop As Object
Dim obj As Object
Dim SchemaContainer As Object
Dim Class As Object

Set SchemaContainer = GetObject("LDAP://Fabrikam/Schema")
'Show all items in the schema container
For Each obj In SchemaContainer
     Debug.Print obj.Name & " (" & obj.Class & ")"
Next

'Show the optional attributes
For Each prop In Class.OptionalProperties
   Debug.Print prop
Next

IADsContainer *pSchema=NULL;
 HRESULT hr;

 CoInitialize(NULL);

 hr = ADsGetObject(L"LDAP://Fabrikam/Schema", 
                   IID_IADsContainer, (void**) &pSchema );

 if ( !SUCCEEDED(hr) )
 {
   return hr;
 }

 // Enumerate schema objects
 IEnumVARIANT *pEnum = NULL;
 hr = ADsBuildEnumerator( pSchema, &pEnum );
 pSchema->Release(); // This is no longer needed, since we have the enumerator already.
    
 if ( SUCCEEDED(hr) )
 {
   VARIANT var;
   ULONG lFetch;
   IADs *pChild=NULL;
   VariantInit(&var);
        
   while( SUCCEEDED(ADsEnumerateNext( pEnum, 1, &var, &lFetch )) && lFetch == 1 )
   {
     hr = V_DISPATCH(&var)->QueryInterface( IID_IADs, (void**) &pChild );
     if ( SUCCEEDED(hr) )
     {
       BSTR bstrName;
       BSTR bstrClass;
       // Get more information on the child classes
       pChild->get_Name(&bstrName);
       pChild->get_Class(&bstrClass);
                
       printf("%S\t\t(%S)\n", bstrName, bstrClass );
                
       // Clean-up
       SysFreeString(bstrName);
       SysFreeString(bstrClass);
                
       pChild->Release();
     }
     VariantClear(&var);
   }
 }

 CoUninitialize();

你还可以绑定到一个对象并获取架构位置，如下所示：

Dim prop As Object
Dim dom As Object
Dim Class As Object

Set dom = GetObject("LDAP://Fabrikam")
Debug.Print dom.Schema
Set Class = GetObject(dom.Schema)
'Mandatory attributes
For Each prop In Class.MandatoryProperties
    Debug.Print prop
Next