/// <summary>
/// Gets the <see cref="PropertyValidator"/> instances for the specified <paramref name="type"/>.
/// </summary>
/// <param name="type">The <see cref="Type"/> that the validators should be retrieved for.</param>
/// <returns>An <see cref="IEnumerable{T}"/> instance, containing <see cref="IPropertyValidator"/> objects.</returns>
public IEnumerable<IPropertyValidator> GetValidators(Type type)
{
var typeDescriptor =
new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var propertyDescriptors =
typeDescriptor.GetProperties();
var results =
new List<IPropertyValidator>();
foreach (PropertyDescriptor descriptor in propertyDescriptors)
{
var attributes =
descriptor.Attributes.OfType<ValidationAttribute>();
var validator =
new PropertyValidator
{
AttributeAdaptors = this.GetAttributeAdaptors(attributes),
Descriptor = descriptor
};
results.Add(validator);
}
return results;
}
/// <summary>
/// Gets the specified type.
/// </summary>
/// <param name="type">The type.</param>
/// <returns></returns>
public static ICustomTypeDescriptor Get(Type type)
{
try
{
locker.EnterReadLock();
var metadataType = hashtable[type] as Type;
ICustomTypeDescriptor descriptor = null;
if (metadataType != null)
{
var instance = TypeActivator.CreateInstance(metadataType);
if (instance != null)
{
// Order to get the metadata type instance from DI.
metadataType = instance.GetType();
descriptor = new AssociatedMetadataTypeTypeDescriptionProvider(type, metadataType).GetTypeDescriptor(type);
}
}
return descriptor;
}
finally
{
locker.ExitReadLock();
}
}
protected virtual ICustomTypeDescriptor GetTypeDescriptor(BindingContext context)
{
AssociatedMetadataTypeTypeDescriptionProvider provider =
new AssociatedMetadataTypeTypeDescriptionProvider(context.ModelType);
return provider.GetTypeDescriptor(context.ModelType, context.Model);
}
/// <summary>
/// Validates the specified validation context.
/// </summary>
/// <param name="validationContext">The validation context.</param>
/// <param name="metadata">The metadata.</param>
/// <returns></returns>
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext, ModelMetadata metadata) {
if (!metadata.IsRequired || VirtualPath != null) yield break;
var customTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(metadata.ContainerType).GetTypeDescriptor(metadata.ContainerType);
if (customTypeDescriptor == null) yield break;
var descriptor = customTypeDescriptor.GetProperties().Find(metadata.PropertyName, true);
var req = (new List<Attribute>(descriptor.Attributes.OfType<Attribute>())).OfType<RequiredAttribute>().FirstOrDefault();
if (req != null) yield return new ValidationResult(req.FormatErrorMessage(metadata.DisplayName));
}
private static void RegisterModelMetadata(object model)
{
var modelType = model.GetType();
var typeAttributes = System.Attribute.GetCustomAttributes(modelType);
var modelMetadata = (MetadataTypeAttribute)typeAttributes.FirstOrDefault(x => x is MetadataTypeAttribute);
if (modelMetadata != null)
{
var provider = new AssociatedMetadataTypeTypeDescriptionProvider(modelType, modelMetadata.MetadataClassType);
TypeDescriptor.AddProviderTransparent(provider, modelType);
}
}
/// <summary>
/// Gets the <see cref="PropertyValidator"/> instances for the specified <paramref name="type"/>.
/// </summary>
/// <param name="type">The <see cref="Type"/> that the validators should be retrieved for.</param>
/// <returns>An <see cref="IEnumerable{T}"/> instance, containing <see cref="IPropertyValidator"/> objects.</returns>
public IEnumerable<IPropertyValidator> GetValidators(Type type)
{
var typeDescriptor =
new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var results =
new List<IPropertyValidator>();
results.Add(this.GetTypeValidator(typeDescriptor));
results.AddRange(this.GetPropertyValidators(typeDescriptor));
return results;
}
public void GetTypeDescriptor ()
{
var v = new AssociatedMetadataTypeTypeDescriptionProvider (typeof (string));
Assert.IsTrue (v != null, "#A1");
string s = "test";
var o = v.GetTypeDescriptor (s.GetType (), s);
Assert.IsTrue (o != null, "#B1");
Type oType = o.GetType ();
Assert.AreEqual ("System.ComponentModel.DataAnnotations.AssociatedMetadataTypeTypeDescriptor", oType.ToString (), "#C1");
Assert.IsTrue (typeof (ICustomTypeDescriptor).IsAssignableFrom (oType), "#C2");
Assert.IsTrue (typeof (CustomTypeDescriptor).IsAssignableFrom (oType), "#C3");
}
/// <inheritdoc/>
public Task ValidateChangeSetItemAsync(
SubmitContext context,
ChangeSetItem item,
Collection <ChangeSetItemValidationResult> validationResults,
CancellationToken cancellationToken)
{
Ensure.NotNull(validationResults, "validationResults");
DataModificationItem dataModificationItem = item as DataModificationItem;
if (dataModificationItem != null)
{
object resource = dataModificationItem.Resource;
// TODO GitHubIssue#50 : should this PropertyDescriptorCollection be cached?
PropertyDescriptorCollection properties =
new DataAnnotations.AssociatedMetadataTypeTypeDescriptionProvider(resource.GetType())
.GetTypeDescriptor(resource).GetProperties();
DataAnnotations.ValidationContext validationContext = new DataAnnotations.ValidationContext(resource);
foreach (PropertyDescriptor property in properties)
{
validationContext.MemberName = property.Name;
IEnumerable <DataAnnotations.ValidationAttribute> validationAttributes =
property.Attributes.OfType <DataAnnotations.ValidationAttribute>();
foreach (DataAnnotations.ValidationAttribute validationAttribute in validationAttributes)
{
object value = property.GetValue(resource);
DataAnnotations.ValidationResult validationResult =
validationAttribute.GetValidationResult(value, validationContext);
if (validationResult != DataAnnotations.ValidationResult.Success)
{
validationResults.Add(new ChangeSetItemValidationResult()
{
Id = validationAttribute.GetType().FullName,
Message = validationResult.ErrorMessage,
Severity = EventLevel.Error,
Target = resource,
PropertyName = property.Name
});
}
}
}
}
return(Task.WhenAll());
}
/// <inheritdoc/>
public Task ValidateEntityAsync(
SubmitContext context,
ChangeSetEntry entry,
ValidationResults validationResults,
CancellationToken cancellationToken)
{
Ensure.NotNull(validationResults, "validationResults");
DataModificationEntry dataModificationEntry = entry as DataModificationEntry;
if (dataModificationEntry != null)
{
object entity = dataModificationEntry.Entity;
// TODO GitHubIssue#50 : should this PropertyDescriptorCollection be cached?
PropertyDescriptorCollection properties =
new DataAnnotations.AssociatedMetadataTypeTypeDescriptionProvider(entity.GetType())
.GetTypeDescriptor(entity).GetProperties();
DataAnnotations.ValidationContext validationContext = new DataAnnotations.ValidationContext(entity);
foreach (PropertyDescriptor property in properties)
{
validationContext.MemberName = property.Name;
IEnumerable <DataAnnotations.ValidationAttribute> validationAttributes =
property.Attributes.OfType <DataAnnotations.ValidationAttribute>();
foreach (DataAnnotations.ValidationAttribute validationAttribute in validationAttributes)
{
object value = property.GetValue(entity);
DataAnnotations.ValidationResult validationResult =
validationAttribute.GetValidationResult(value, validationContext);
if (validationResult != DataAnnotations.ValidationResult.Success)
{
validationResults.Add(new ValidationResult()
{
Id = validationAttribute.GetType().FullName,
Message = validationResult.ErrorMessage,
Severity = ValidationSeverity.Error,
Target = entity,
PropertyName = property.Name
});
}
}
}
}
return(Task.WhenAll());
}
private object BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
//针对目标类型创建一个空Model对象
Type modelType = bindingContext.ModelType;
object model = this.CreateModel(controllerContext, bindingContext, modelType);
bindingContext.ModelMetadata.Model = model;
//针对每个描述属性的PropertyDescriptor对象调用BindProperty方法对相应属性赋值
ICustomTypeDescriptor modelTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(modelType).GetTypeDescriptor(modelType);
PropertyDescriptorCollection propertyDescriptors = modelTypeDescriptor.GetProperties();
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
this.BindProperty(controllerContext, bindingContext, propertyDescriptor);
}
return model;
}
/// <inheritdoc/>
public Task ValidateChangeSetItemAsync(
SubmitContext context,
ChangeSetItem item,
Collection<ChangeSetItemValidationResult> validationResults,
CancellationToken cancellationToken)
{
Ensure.NotNull(validationResults, "validationResults");
DataModificationItem dataModificationItem = item as DataModificationItem;
if (dataModificationItem != null)
{
object resource = dataModificationItem.Resource;
// TODO GitHubIssue#50 : should this PropertyDescriptorCollection be cached?
PropertyDescriptorCollection properties =
new DataAnnotations.AssociatedMetadataTypeTypeDescriptionProvider(resource.GetType())
.GetTypeDescriptor(resource).GetProperties();
DataAnnotations.ValidationContext validationContext = new DataAnnotations.ValidationContext(resource);
foreach (PropertyDescriptor property in properties)
{
validationContext.MemberName = property.Name;
IEnumerable<DataAnnotations.ValidationAttribute> validationAttributes =
property.Attributes.OfType<DataAnnotations.ValidationAttribute>();
foreach (DataAnnotations.ValidationAttribute validationAttribute in validationAttributes)
{
object value = property.GetValue(resource);
DataAnnotations.ValidationResult validationResult =
validationAttribute.GetValidationResult(value, validationContext);
if (validationResult != DataAnnotations.ValidationResult.Success)
{
validationResults.Add(new ChangeSetItemValidationResult()
{
Id = validationAttribute.GetType().FullName,
Message = validationResult.ErrorMessage,
Severity = EventLevel.Error,
Target = resource,
PropertyName = property.Name
});
}
}
}
}
return Task.WhenAll();
}
/// <inheritdoc/>
public Task ValidateEntityAsync(
SubmitContext context,
ChangeSetEntry entry,
ValidationResults validationResults,
CancellationToken cancellationToken)
{
Ensure.NotNull(validationResults, "validationResults");
DataModificationEntry dataModificationEntry = entry as DataModificationEntry;
if (dataModificationEntry != null)
{
object entity = dataModificationEntry.Entity;
// TODO GitHubIssue#50 : should this PropertyDescriptorCollection be cached?
PropertyDescriptorCollection properties =
new DataAnnotations.AssociatedMetadataTypeTypeDescriptionProvider(entity.GetType())
.GetTypeDescriptor(entity).GetProperties();
DataAnnotations.ValidationContext validationContext = new DataAnnotations.ValidationContext(entity);
foreach (PropertyDescriptor property in properties)
{
validationContext.MemberName = property.Name;
IEnumerable<DataAnnotations.ValidationAttribute> validationAttributes =
property.Attributes.OfType<DataAnnotations.ValidationAttribute>();
foreach (DataAnnotations.ValidationAttribute validationAttribute in validationAttributes)
{
object value = property.GetValue(entity);
DataAnnotations.ValidationResult validationResult =
validationAttribute.GetValidationResult(value, validationContext);
if (validationResult != DataAnnotations.ValidationResult.Success)
{
validationResults.Add(new ValidationResult()
{
Id = validationAttribute.GetType().FullName,
Message = validationResult.ErrorMessage,
Severity = ValidationSeverity.Error,
Target = entity,
PropertyName = property.Name
});
}
}
}
}
return Task.WhenAll();
}
public static ICustomTypeDescriptor Get(Type type)
{
try
{
locker.EnterReadLock();
var metadataType = hashtable[type] as Type;
ICustomTypeDescriptor descriptor = null;
if (metadataType != null)
{
descriptor = new AssociatedMetadataTypeTypeDescriptionProvider(type, metadataType).GetTypeDescriptor(type);
}
return descriptor;
}
finally
{
locker.ExitReadLock();
}
}
private static void RegisterProvider(Type itemType, Type metadataType)
{
var association = new AssociatedMetadataTypeTypeDescriptionProvider(itemType, metadataType);
TypeDescriptor.AddProviderTransparent(association, itemType);
}
static ICustomTypeDescriptor GetTypeDescriptor(object model, Type modelType)
{
var provider = new AssociatedMetadataTypeTypeDescriptionProvider(modelType);
return provider.GetTypeDescriptor(modelType, model);
}
/// <summary>
/// Validates the specified validation context.
/// </summary>
/// <param name="validationContext">The validation context.</param>
/// <param name="metadata">The metadata.</param>
/// <returns></returns>
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext, ModelMetadata metadata)
{
if (!IsValidInput()) {
yield return new ValidationResult(string.Format("Value of the {0} field couldn´t be recognized as a valid page ", metadata.DisplayName));
} else if (metadata.IsRequired && !IsValidPage()) {
var customTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(metadata.ContainerType).GetTypeDescriptor(metadata.ContainerType);
if (customTypeDescriptor != null) {
var descriptor = customTypeDescriptor.GetProperties().Find(metadata.PropertyName, true);
var req = (new List<Attribute>(descriptor.Attributes.OfType<Attribute>())).OfType<RequiredAttribute>().FirstOrDefault();
if (req != null) yield return new ValidationResult(req.FormatErrorMessage(metadata.DisplayName));
}
}
}
private static List<IDataAnnotationsValidatorAdapter> GetAdapters(Type type)
{
var typeDescriptor =
new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var adapters =
GetAdapters(null, type, typeDescriptor.GetAttributes().OfType<ValidationAttribute>());
var propertyDescriptors =
typeDescriptor.GetProperties();
foreach (PropertyDescriptor property in propertyDescriptors)
{
adapters.AddRange(GetAdapters(property, property.PropertyType, property.Attributes.OfType<ValidationAttribute>()));
}
return adapters;
}
public ParameterHandler(ParameterInfo parameterInfo)
{
if (IsSimpleType(parameterInfo.ParameterType) || IsEnumerable(parameterInfo.ParameterType))
{
GetRouteValues =
new ReadOnlyCollection<RouteValueHandler>(new List<RouteValueHandler>()
{
new RouteValueHandler(parameterInfo.Name, v => v)
});
}
else
{
var type = parameterInfo.ParameterType;
var typeDesc = new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var propDescs = typeDesc.GetProperties();
GetRouteValues = propDescs.OfType<PropertyDescriptor>()
.Select(desc => new RouteValueHandler(desc.Name, desc.GetValue)).ToList();
}
IsFromUri = true;
}
public IEnumerable<PropertyDescriptor> GetProperties(ModelBindingContext context)
{
var propertyCollection = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(UserInfo)).GetTypeDescriptor(typeof(UserInfo)).GetProperties();
var result = from PropertyDescriptor propDesc in propertyCollection where CanUpdateProperty(propDesc, context.PropertyFilter) select propDesc;
return result;
}
public void Constructors_Null_AssociatedMetadataType_2 ()
{
var v = new AssociatedMetadataTypeTypeDescriptionProvider (typeof (string), null);
}
public void Constructors_Null_Type ()
{
var v = new AssociatedMetadataTypeTypeDescriptionProvider (null);
}
