/// <summary>
/// Attempts to resolve the attribute from the binder information
/// </summary>
/// <param name="binderInfo">The binder info.</param>
/// <returns></returns>
private ITypedAttribute TryResolveAttribute(DynamicEntity.BinderInfo binderInfo)
{
//TODO: Az - Should we be returning a dynamic version of Attribute? Could have some fun there if we do
//find all the properties in the object schema
//TODO: handle binderInfo.IgnoreCase
var properties = from tab in _entity.AttributionSchema.AttributeGroupDefinitions
from p in tab.AttributeDefinitions
where p.Alias == binderInfo.Name || p.Id.ValueAsString == binderInfo.Name
select p;
var property = properties.SingleOrDefault();
//if there is a property then find the attribute that implements it
if (property != default(IAttributeDefinition))
//Need to work out some better way to expose the values, x.Value.Value, err that's not good
return Attributes.Where<ITypedAttribute>(x => x.Value.AttributeType == property).Select(x => x.Value.Value).SingleOrDefault();
return null;
}
private IEnumerable<dynamic> TryResolveChildrenByTypeName(DynamicEntity.BinderInfo binderInfo)
{
//ensures that we're working with a vertexed entity
if (typeof(IEntityVertex).IsAssignableFrom(_entity.GetType()))
{
var vertex = (IEntityVertex)_entity;
var children = from c in (IDictionary<IMappedIdentifier, IEntityVertex>)vertex.DescendentEntities //we have to do the explicit cast as it implements IEnumerable twice, as we want the dictionary
where MakePluralName(c.Key.ValueAsString) == binderInfo.Name || MakePluralName(c.Value.Id.ValueAsString) == binderInfo.Name
select ((ITypedEntity)c.Value).AsDynamic(); //either we're returning too low a type from c.Value or we need a Dynamic which isn't Typed
//we wont return null here, as the child may be allowed, there just aren't any
//TODO: Should we return null or not? (refer to previous comment)
return children;
}
else
{
//You're doing it wrong!
throw new NotSupportedException(string.Format("Entity {0} is not an instance of {1} and hence it does not support the concept of children", _entity.GetType().FullName, typeof(IEntityVertex).FullName));
}
}
private IAttributeGroupDefinition TryResolveAttributeGroupDefinition(DynamicEntity.BinderInfo binderInfo)
{
//finds all the attribute groups that either have the Name or the ID
//TODO: handle binderInfo.IgnoreCase
var tabs = from tab in _entity.AttributionSchema.AttributeGroupDefinitions
where tab.Name == binderInfo.Name || tab.Id.ValueAsString == binderInfo.Name
select tab;
return tabs.SingleOrDefault();
}
