C# IEdmTypeReference.AsStructuredOrNull方法代码示例

        /// <summary>
        /// Given a property name, if the associated type reference is strucutred, then this returns  
        /// the property of the structured type. Otherwise, it returns null.
        /// </summary>
        /// <param name="parentReference">The parent type to be used to find binding options.</param>
        /// <param name="propertyName">The string designated the property name to be bound.</param>
        /// <param name="resolver">Resolver for uri parser.</param>
        /// <returns>The property associated with string and parent type.</returns>
        internal static IEdmProperty BindProperty(IEdmTypeReference parentReference, string propertyName, ODataUriResolver resolver = null)
        {
            if (resolver == null)
            {
                resolver = ODataUriResolver.Default;
            }

            IEdmStructuredTypeReference structuredParentType =
                parentReference == null ? null : parentReference.AsStructuredOrNull();
            return structuredParentType == null ? null : resolver.ResolveProperty(structuredParentType.StructuredDefinition(), propertyName);
        }

 /// <summary>
 /// Binds a string to its associated type.
 /// </summary>
 /// <param name="parentReference">The parent type to be used to find binding options.</param>
 /// <param name="propertyName">The string designated the property name to be bound.</param>
 /// <returns>The property associated with string and parent type.</returns>
 private static IEdmProperty BindProperty(IEdmTypeReference parentReference, string propertyName)
 {
     IEdmStructuredTypeReference structuredParentType =
         parentReference == null ? null : parentReference.AsStructuredOrNull();
     return structuredParentType == null ? null : structuredParentType.FindProperty(propertyName);
 }

        /// <summary>
        /// Sets the value read from EPM to a property on an entry.
        /// </summary>
        /// <param name="targetList">The target list, which is a list of properties (on entry or complex value).</param>
        /// <param name="targetTypeReference">The type of the value on which to set the property (can be entity or complex).</param>
        /// <param name="epmInfo">The EPM info for the mapping for which the value was read.</param>
        /// <param name="propertyValue">The property value read, if the value was specified as null then this should be null,
        /// if the value was missing the method should not be called at all.
        /// For primitive properties this should be the string value, for all other properties this should be the exact value type.</param>
        protected void SetEpmValue(
            IList targetList,
            IEdmTypeReference targetTypeReference,
            EntityPropertyMappingInfo epmInfo,
            object propertyValue)
        {
            Debug.Assert(epmInfo != null, "epmInfo != null");
            Debug.Assert(targetTypeReference != null, "targetTypeReference != null");
            Debug.Assert(targetList != null, "targetList != null");
            Debug.Assert(
                targetTypeReference.IsODataEntityTypeKind() || targetTypeReference.IsODataComplexTypeKind(),
                "Only entity and complex types can have an EPM value set on them.");

            this.SetEpmValueForSegment(
                epmInfo,
                0,
                targetTypeReference.AsStructuredOrNull(),
                (List<ODataProperty>)targetList,
                propertyValue);
        }

 protected void SetEpmValue(IList targetList, IEdmTypeReference targetTypeReference, EntityPropertyMappingInfo epmInfo, object propertyValue)
 {
     this.SetEpmValueForSegment(epmInfo, 0, targetTypeReference.AsStructuredOrNull(), (List<ODataProperty>) targetList, propertyValue);
 }