C# IEdmProperty.GetCanReflectOnInstanceTypeProperty方法代码示例

        /// <summary>
        /// Gets the property info for the EDM property declared on this type.
        /// </summary>
        /// <param name="structuredType">The structured type to get the property on.</param>
        /// <param name="property">Property instance to get the property info for.</param>
        /// <param name="model">The model containing annotations.</param>
        /// <returns>Returns the PropertyInfo object for the specified EDM property.</returns>
        internal PropertyInfo GetPropertyInfo(IEdmStructuredType structuredType, IEdmProperty property, IEdmModel model)
        {
            DebugUtils.CheckNoExternalCallers();
            Debug.Assert(structuredType != null, "structuredType != null");
            Debug.Assert(property != null, "property != null");
            Debug.Assert(model != null, "model != null");
            Debug.Assert(property.GetCanReflectOnInstanceTypeProperty(model), "property.CanReflectOnInstanceTypeProperty()");
#if DEBUG
            Debug.Assert(structuredType.ContainsProperty(property), "The structuredType does not define the specified property.");
#endif

            if (this.propertyInfosDeclaredOnThisType == null)
            {
                this.propertyInfosDeclaredOnThisType = new Dictionary<IEdmProperty, PropertyInfo>(ReferenceEqualityComparer<IEdmProperty>.Instance);
            }

            PropertyInfo propertyInfo;
            if (!this.propertyInfosDeclaredOnThisType.TryGetValue(property, out propertyInfo))
            {
                BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance;
                propertyInfo = structuredType.GetInstanceType(model).GetProperty(property.Name, bindingFlags);
                if (propertyInfo == null)
                {
                    throw new ODataException(Strings.PropertyInfoTypeAnnotation_CannotFindProperty(structuredType.ODataFullName(), structuredType.GetInstanceType(model), property.Name));
                }

                this.propertyInfosDeclaredOnThisType.Add(property, propertyInfo);
            }

            Debug.Assert(propertyInfo != null, "propertyInfo != null");
            return propertyInfo;
        }

        /// <summary>
        /// Gets the property info for the EDM property on the specified type.
        /// </summary>
        /// <param name="typeReference">The type to get the property on.</param>
        /// <param name="property">Property instance to get the property info for.</param>
        /// <param name="model">Model containing annotations.</param>
        /// <returns>Returns the PropertyInfo object for the specified property.</returns>
        /// <remarks>The method searches this type as well as all its base types for the property.</remarks>
        internal static PropertyInfo GetPropertyInfo(this IEdmStructuredTypeReference typeReference, IEdmProperty property, IEdmModel model)
        {
            DebugUtils.CheckNoExternalCallers();
            Debug.Assert(typeReference != null, "typeReference != null");
            Debug.Assert(property != null, "property != null");
            Debug.Assert(model != null, "model != null");
            Debug.Assert(property.GetCanReflectOnInstanceTypeProperty(model), "property.CanReflectOnInstanceTypeProperty()");
#if DEBUG
            Debug.Assert(typeReference.ContainsProperty(property), "The typeReference does not define the specified property.");
#endif

            IEdmStructuredType structuredType = typeReference.StructuredDefinition();
            return PropertyInfoTypeAnnotation.GetPropertyInfoTypeAnnotation(structuredType, model).GetPropertyInfo(structuredType, property, model);
        }

        /// <summary>
        /// Creates an expression to access a property.
        /// </summary>
        /// <param name="source">The source expression which evaluates to the instance to access the property on.</param>
        /// <param name="sourceStructuredType">The type of the source expression.</param>
        /// <param name="property">The property to access.</param>
        /// <returns>An expression which evaluates to the property value.</returns>
        private Expression CreatePropertyAccessExpression(Expression source, IEdmStructuredTypeReference sourceStructuredType, IEdmProperty property)
        {
            Debug.Assert(source != null, "source != null");
            Debug.Assert(sourceStructuredType != null, "sourceStructuredType != null");
            Debug.Assert(property != null, "property != null");
            Debug.Assert(TypeUtils.AreTypesEquivalent(source.Type, sourceStructuredType.GetInstanceType(this.model)), "source.Type != sourceStructuredType.GetInstanceType()");
#if DEBUG
            Debug.Assert(sourceStructuredType.ContainsProperty(property), "property is not declared on sourceStructuredType");
#endif

            // TODO: Deal with null propagation???
            if (property.GetCanReflectOnInstanceTypeProperty(this.model))
            {
                return Expression.Property(source, sourceStructuredType.GetPropertyInfo(property, this.model));
            }
            else
            {
                // TODO: Support for untyped and open properties
                throw new NotImplementedException();
            }
        }