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WsGetFaultErrorDetail function (webservices.h)

  • Article

Read the fault detail stored in a WS_ERROR object.

Syntax

HRESULT WsGetFaultErrorDetail(
  [in]           WS_ERROR                          *error,
  [in]           const WS_FAULT_DETAIL_DESCRIPTION *faultDetailDescription,
  [in]           WS_READ_OPTION                    readOption,
  [in, optional] WS_HEAP                           *heap,
                 void                              *value,
  [in]           ULONG                             valueSize
);

Parameters

[in] error

The error object that contains the fault information.

[in] faultDetailDescription

A pointer to a description of the fault detail element.

The action value of the fault detail description is used as a filter value to match against the action of the fault. If both action strings are specified (the action value of the fault detail description is not NULL and the action value WS_FAULT_ERROR_PROPERTY_ACTION in the WS_ERROR has a length greater than zero), then the action strings are compared to determine a match. If there is a match, then the function will then try to deserialize the detail element.

The element description of the fault detail description is used to describe the format of the element in the fault detail.

[in] readOption

Whether the element is required, and how to allocate the value. See WS_READ_OPTION for more information.

[in, optional] heap

The heap to store the deserialized values in.

value

The interpretation of this parameter depends on the WS_READ_OPTION.

[in] valueSize

The interpretation of this parameter depends on the WS_READ_OPTION.

Return value

This function can return one of these values.

Return code Description
WS_E_INVALID_FORMAT
 The input data was not in the expected format or did not have the expected value.
E_OUTOFMEMORY
 Ran out of memory.
WS_E_QUOTA_EXCEEDED
 The size quota of the heap was exceeded.
E_INVALIDARG
 One or more arguments are invalid.

Remarks

This API deserializes the value from the detail field of the WS_FAULT stored in the WS_ERROR object.

This functions supports the following scenarios, based on the contents of the WS_ELEMENT_DESCRIPTION in the WS_FAULT_DETAIL_DESCRIPTION supplied:

  • Reading a single element. In this case, the elementLocalName and elementNs fields of the WS_ELEMENT_DESCRIPTION should be set to the local name and namespace of the element to read, and the type and type description represents the type of the value being deserialized.

    Since different faults with different detail formats may be expected from a service, this function can be called in succession to try to read each type of detail. In this case, the WS_READ_OPTIONAL_POINTER value can be specified, which will return a NULL pointer if the element name in the fault detail does not match the expected value.

  • Reading multiple elements as a single value. In this case, the elementLocalName and elementNs fields of the WS_ELEMENT_DESCRIPTION should be set to NULL, and a WS_STRUCT_TYPE and WS_STRUCT_DESCRIPTION should be specified. Each field of the structure value being deserialized should correspond to element(s) to read within the body. The readOption parameter must be WS_READ_REQUIRED_VALUE or WS_READ_REQUIRED_POINTER.

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 R2 [desktop apps | UWP apps]
Target Platform Windows
Header webservices.h
Library WebServices.lib
DLL WebServices.dll