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WS_FIELD_DESCRIPTION structure (webservices.h)

  • Article

Represents serialization information about a field within a structure.

Syntax

typedef struct _WS_FIELD_DESCRIPTION {
  WS_FIELD_MAPPING mapping;
  WS_XML_STRING    *localName;
  WS_XML_STRING    *ns;
  WS_TYPE          type;
  void             *typeDescription;
  ULONG            offset;
  ULONG            options;
  WS_DEFAULT_VALUE *defaultValue;
  ULONG            countOffset;
  WS_XML_STRING    *itemLocalName;
  WS_XML_STRING    *itemNs;
  WS_ITEM_RANGE    *itemRange;
} WS_FIELD_DESCRIPTION;

Members

mapping

Identifies how the field maps to the XML. See WS_FIELD_MAPPING for the ways that the field can be exposed in the XML content.

localName

The XML local name to use for the field.

This field is required, except in the following case, where it may be NULL. If the mapping field is WS_REPEATING_ELEMENT_FIELD_MAPPING, then this identifies the local name of the "wrapper" element that is the parent element of the array item elements. Setting this field (and the ns field) to NULL will omit the wrapper element. The ns and localName fields must be either both specified or both NULL.

ns

The XML namespace to use for the field.

This field is required, except in the following case, where it may be NULL. If the mapping field is WS_REPEATING_ELEMENT_FIELD_MAPPING, then this identifies the namespace of the "wrapper" element that is the parent element of the array item elements. Setting this field (and the localName field) to NULL will omit the wrapper element. The ns and localName fields must be either both specified or both NULL.

type

The type of the field. See WS_TYPE for a list of supported types.

typeDescription

Additional information about the type. Each type has a different description structure. This may be NULL, depending on the WS_TYPE.

offset

The offset of the field within the containing structure.

options

Additional flags for the field. See WS_FIELD_OPTIONS for a list of flags. If no flags are needed, this may be 0.

defaultValue

Points to a default value for the field. This is used in the following instances:

If defaultValue is NULL, then it is the same as having a default value of all zero's.

countOffset

The structure offset of the ULONG field that represents the number of items in the array.

This field is used when using WS_REPEATING_ELEMENT_FIELD_MAPPING or array types (WS_CHAR_ARRAY_TYPE, WS_UTF8_ARRAY_TYPE, WS_BYTE_ARRAY_TYPE).
In other cases, it does not need to be specified (it can be 0).

itemLocalName

The XML local name to use for the repeating elements when using WS_REPEATING_ELEMENT_FIELD_MAPPING.

In other cases this field does not need to be specified (it can be NULL).

itemNs

The XML namespace to use for the repeating elements when using WS_REPEATING_ELEMENT_FIELD_MAPPING.

In other cases this field does not need to be specified (it can be NULL).

itemRange

The minimum and maximum number of repeating elements that may appear when using WS_REPEATING_ELEMENT_FIELD_MAPPING, WS_REPEATING_ELEMENT_CHOICE_FIELD_MAPPING, or WS_REPEATING_ANY_ELEMENT_FIELD_MAPPING. If not specified (NULL), the minimum is 0, and the maximum is MAX ULONG.

In other cases this field does not need to be specified (it can be NULL).

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Header webservices.h