/// <summary>Obtain binding info corresponding to a given type</summary>
/// <param name="entityType">Type for which to obtain information</param>
/// <param name="model">The client model.</param>
/// <returns>Info about the <paramref name="entityType"/></returns>
private static BindingEntityInfoPerType GetBindingEntityInfoFor(Type entityType, ClientEdmModel model)
{
BindingEntityInfoPerType bindingEntityInfo;
metadataCacheLock.EnterReadLock();
try
{
if (bindingEntityInfos.TryGetValue(entityType, out bindingEntityInfo))
{
return(bindingEntityInfo);
}
}
finally
{
metadataCacheLock.ExitReadLock();
}
bindingEntityInfo = new BindingEntityInfoPerType();
// Try to get the entity set name from the EntitySetAttribute attributes. In order to make the
// inheritance work, we need to look at the attributes declared in the base types also.
// EntitySetAttribute does not allow multiples, so there can be at most 1 instance on the type.
EntitySetAttribute entitySetAttribute = (EntitySetAttribute)entityType.GetCustomAttributes(typeof(EntitySetAttribute), true).SingleOrDefault();
// There must be exactly one (unambiguous) EntitySetAttribute attribute.
bindingEntityInfo.EntitySet = entitySetAttribute != null ? entitySetAttribute.EntitySet : null;
bindingEntityInfo.ClientType = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityType));
foreach (ClientPropertyAnnotation p in bindingEntityInfo.ClientType.Properties())
{
BindingPropertyInfo bpi = null;
Type propertyType = p.PropertyType;
if (p.IsStreamLinkProperty)
{
// DataServiceStreamLink is not mutable externally
// It implements INPC to notify controls about our updates
// We should ignore its events since we are the only one updating it.
continue;
}
else if (p.IsPrimitiveOrComplexCollection)
{
Debug.Assert(!BindingEntityInfo.IsDataServiceCollection(propertyType, model), "DataServiceCollection cannot be the type that backs collections of primitives or complex types.");
bpi = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindPrimitiveOrComplexCollection
};
}
else if (p.IsEntityCollection)
{
if (BindingEntityInfo.IsDataServiceCollection(propertyType, model))
{
bpi = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindDataServiceCollection
};
}
}
else if (BindingEntityInfo.IsEntityType(propertyType, model))
{
bpi = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindEntity
};
}
else if (BindingEntityInfo.CanBeComplexType(propertyType))
{
// Add complex types and nothing else.
Debug.Assert(!p.IsKnownType, "Known types do not implement INotifyPropertyChanged.");
bpi = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindComplex
};
}
if (bpi != null)
{
bpi.PropertyInfo = p;
// For entity types, all of the above types of properties are interesting.
// For complex types, only observe collections and complex type properties.
if (bindingEntityInfo.ClientType.IsEntityType ||
bpi.PropertyKind == BindingPropertyKind.BindingPropertyKindComplex ||
bpi.PropertyKind == BindingPropertyKind.BindingPropertyKindPrimitiveOrComplexCollection)
{
bindingEntityInfo.ObservableProperties.Add(bpi);
}
}
}
metadataCacheLock.EnterWriteLock();
try
{
if (!bindingEntityInfos.ContainsKey(entityType))
{
bindingEntityInfos[entityType] = bindingEntityInfo;
}
}
finally
{
metadataCacheLock.ExitWriteLock();
}
return(bindingEntityInfo);
}
private static BindingEntityInfoPerType GetBindingEntityInfoFor(Type entityType, DataServiceProtocolVersion maxProtocolVersion)
{
BindingEntityInfoPerType type;
metadataCacheLock.EnterReadLock();
try
{
if (bindingEntityInfos.TryGetValue(entityType, out type))
{
return(type);
}
}
finally
{
metadataCacheLock.ExitReadLock();
}
type = new BindingEntityInfoPerType();
EntitySetAttribute attribute = (EntitySetAttribute)entityType.GetCustomAttributes(typeof(EntitySetAttribute), true).SingleOrDefault <object>();
ClientEdmModel model = ClientEdmModel.GetModel(maxProtocolVersion);
type.EntitySet = (attribute != null) ? attribute.EntitySet : null;
type.ClientType = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityType));
foreach (ClientPropertyAnnotation annotation in type.ClientType.Properties())
{
BindingPropertyInfo item = null;
Type propertyType = annotation.PropertyType;
if (!annotation.IsStreamLinkProperty)
{
if (annotation.IsPrimitiveOrComplexCollection)
{
item = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindPrimitiveOrComplexCollection
};
}
else if (annotation.IsEntityCollection)
{
if (IsDataServiceCollection(propertyType, maxProtocolVersion))
{
item = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindDataServiceCollection
};
}
}
else if (IsEntityType(propertyType, maxProtocolVersion))
{
item = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindEntity
};
}
else if (CanBeComplexType(propertyType))
{
item = new BindingPropertyInfo {
PropertyKind = BindingPropertyKind.BindingPropertyKindComplex
};
}
if (item != null)
{
item.PropertyInfo = annotation;
if ((type.ClientType.IsEntityType || (item.PropertyKind == BindingPropertyKind.BindingPropertyKindComplex)) || (item.PropertyKind == BindingPropertyKind.BindingPropertyKindPrimitiveOrComplexCollection))
{
type.ObservableProperties.Add(item);
}
}
}
}
metadataCacheLock.EnterWriteLock();
try
{
if (!bindingEntityInfos.ContainsKey(entityType))
{
bindingEntityInfos[entityType] = type;
}
}
finally
{
metadataCacheLock.ExitWriteLock();
}
return(type);
}
