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3.1.4.3.7 IWbemServices::PutClassAsync (Opnum 9)

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The IWbemServices::PutClassAsync method is the asynchronous version of the IWbemServices::PutClass method. The PutClassAsync method creates a new class or updates an existing class. The server MUST NOT allow the creation of classes that have names that begin or end with an underscore because those names are reserved for system classes. If the class name does not conform to the CLASS-NAME element defined in WQL, the server MUST return WBEM_E_INVALID_PARAMETER.

 HRESULT PutClassAsync(
   [in] IWbemClassObject* pObject,
   [in] long lFlags,
   [in] IWbemContext* pCtx,
   [in] IWbemObjectSink* pResponseHandler
 );

pObject: MUST be a pointer to an IWbemClassObject interface pointer that MUST contain the class information to create a new class or update an existing class. The class that is specified by the parameter MUST have been correctly initialized with all the required property values. This parameter MUST NOT be NULL.

lFlags: Specifies the behavior of the PutClassAsync method. Flag behavior MUST be interpreted as specified in the following table.

The server MUST accept a combination of zero or more flags from the following table and MUST comply with all the restrictions in a flag description. Any other DWORD value that does not match a flag condition MUST be treated as not valid.

Value

Meaning

WBEM_FLAG_USE_AMENDED_QUALIFIERS

0x00020000

If this bit is set, the server SHOULD ignore all the amended qualifiers while it creates or updates a CIM class.<36>

If this bit is not set, the server SHOULD include all the qualifiers, including amended qualifiers, while it updates or creates a CIM class.

WBEM_FLAG_UPDATE_ONLY

0x00000001

The server MUST update a CIM class pObject if the CIM class is present.

This flag is mutually exclusive with WBEM_FLAG_CREATE_ONLY. If none of these flags are set, the server MUST create or update a CIM class pObject.

WBEM_FLAG_CREATE_ONLY

0x00000002

The server MUST create a CIM class pObject if the CIM class is not already present.

WBEM_FLAG_UPDATE_FORCE_MODE

0x00000040

The server MUST forcefully update the class even when conflicting child classes exist.

WBEM_FLAG_UPDATE_SAFE_MODE

0x00000020

The server MUST update the class as long as the change does not cause any conflicts with existing child classes or instances.

This flag is mutually exclusive with WBEM_FLAG_UPDATE_FORCE_MODE.

If none of these flags are set, the server MUST update the class if there is no derived class, if there is no instance for that class, or if the class is unchanged.

WBEM_FLAG_SEND_STATUS

0x00000080

If this bit is not set, the server MUST make one final IWbemObjectSink::SetStatus method call on the interface pointer that is provided in the pResponseHandler parameter.

If this bit is set, the server MAY make intermediate IWbemObjectSink::SetStatus calls on the interface pointer prior to call completion.

pCtx: MUST be a pointer to an IWbemContext interface, which MUST contain additional information that the client wants to pass to the server. If the pCtx parameter is NULL, the parameter MUST be ignored.

pResponseHandler: MUST be a pointer to an IWbemObjectSink interface object that is implemented by the client of this method. The parameter MUST NOT be NULL.

Return Values: This method MUST return an HRESULT value that MUST indicate the status of the method call. The server MUST return WBEM_S_NO_ERROR (specified in section 2.2.11) to indicate the successful completion of the method.

WBEM_S_NO_ERROR (0x00)

The following validation happens before asynchronous operation is started:

The security principal that makes the call MUST have WBEM_REMOTE_ENABLE and WBEM_ENABLE accesses to the namespace; otherwise, WBEM_E_ACCESS_DENIED MUST be returned.

Requirements mentioned in the parameter definitions are also checked before starting asynchronous operation.

If successful, the server MUST create a new entry in AsyncOperationTable as specified in section 3.1.1.1.3.

The following validation happens asynchronously:

The server MUST first determine whether the class is dynamic or static.  If the class exists in the ClassTable for the namespace, then it is static when InstanceProviderId is NULL and dynamic otherwise. If the class does not exist in the ClassTable, then WMI MUST iterate through each entry in ProviderTable with IsClassProvider set to TRUE, calling the IsClassSupported entrypoint (described in section 3.1.4.17.14). If a provider returns TRUE, then the algorithm is terminated and the class is dynamic. Otherwise, the class is static.

If the CIM class being updated is dynamic, the security principal that makes the call MUST have WBEM_WRITE_PROVIDER access to the namespace; otherwise, WBEM_E_ACCESS_DENIED MUST be returned.

If the CIM class being updated is static, the security principal that makes the call MUST have WBEM_FULL_WRITE access to the namespace; otherwise, WBEM_E_ACCESS_DENIED MUST be returned.

If the CIM class being created or updated is dynamic, the server MUST obtain SupportsPut for the given provider in the ProviderTable. If SupportsPut is FALSE, the server MUST return WBEM_E_PROVIDER_NOT_CAPABLE.

The server MUST return WBEM_E_CANNOT_BE_SINGLETON if an attempt is made to mark a class as a Singleton that has a nonsingleton superclass or a class with key properties.

In response to the IWbemServices::PutClassAsync method, the server MUST evaluate the pObject parameter (previously specified) and it MUST add or update this class into the current namespace. The method MUST fail if pObject represents a read-only class, if the method parameters or their combinations are not valid (as previously specified), or if the server is unable to execute the method. The method MUST fail with WBEM_E_NOT_FOUND if pObject property __SUPERCLASS is specified but not found in ClassTable.

If a new class is added or an existing class is updated, ClassTable MUST be updated with the changes. If pObject property __SUPERCLASS is specified, DerivedClassTable MUST point to the entry in the ClassTable representing the SuperClass.

If the CIM class referred by pObject is a new entry in the ClassTable, the server MUST generate a __ClassCreationEvent event object upon successful creation of the class.

If the CIM class referred by pObject already exists in the ClassTable prior to this method call,  the server MUST generate a __ClassModificationEvent event object upon successfully updating the class information.

The server MUST ensure that the value referred by __CLASS conforms to CLASS-NAME in 2.2.1.1. In addition:

  • If the value has an underscore character ("_") as the first character, the server MUST return WBEM_E_INVALID_OPERATION.

  • If the value has an underscore character as the last character prior to NULL, the server MUST return WBEM_E_INVALID_OBJECT.

  • The server SHOULD enforce a maximum length for the _CLASS property (see section 2.2) of the object pointed to by the pObject parameter, and return WBEM_E_QUOTA_VIOLATION if the limit is exceeded.<37>