/// <summary>
/// Adds specified meta-feature to the store.
/// </summary>
/// <param name="featureType">Type of feature to add.</param>
public void AddMetaFeature(Type featureType)
{
if (featureType == null)
{
throw new ArgumentNullException("featureType");
}
FeatureAttribute attribute = ReflectionHelper.GetAttribute <FeatureAttribute>(featureType);
if (attribute == null)
{
throw new ArgumentException("featureType must have a FeatureAttribute or derived applied to it.");
}
Type metaFeatureType = attribute.MetaFeature;
Debug.Assert(metaFeatureType != null);
ConstructorInfo constructor = metaFeatureType.GetConstructor(new Type[] { typeof(MetaFeatureStore), typeof(Type) });
if (constructor == null)
{
throw new ArgumentException("MetaFeature type must have a constructor taking MetaFeatureStore and Type arguments.");
}
MetaFeature metaFeature = constructor.Invoke(new object[] { this, featureType }) as MetaFeature;
Debug.Assert(!m_metaFeatures.ContainsKey(metaFeature.FeatureType));
if (!m_metaFeatures.ContainsKey(metaFeature.FeatureType))
{
Debug.WriteLine("MetaFeatureStore: Adding meta-feature to the store: " + metaFeature.ToString());
m_metaFeatures[metaFeature.FeatureType] = metaFeature;
m_relationshipsDirty = true;
}
}
public MetaFeature(IMetaFeatureService store, Type featureType)
{
if (store == null)
{
throw new ArgumentNullException("store");
}
m_store = store;
if (featureType == null)
{
throw new ArgumentNullException("featureType");
}
m_featureType = featureType;
if (m_featureType.GetInterfaceMap(typeof(IDisposable)).InterfaceType == null)
{
throw new ArgumentException("featureType runtime type must implement the System.IDisposable interface to be used as a feature type.");
}
m_featureData = ReflectionHelper.GetAttribute <FeatureAttribute>(m_featureType);
if (m_featureData == null)
{
throw new ArgumentException("featureType must have a FeatureAttribute or derived applied.");
}
Debug.Assert(m_featureData.MetaFeature == this.GetType());
}
public void AddMetaFeatures(Assembly assembly, Predicate <Type> typeFilter)
{
foreach (Type featureType in assembly.GetTypes())
{
if (!featureType.IsAbstract)
{
FeatureAttribute attribute = ReflectionHelper.GetAttribute <FeatureAttribute>(featureType);
if (attribute != null && (typeFilter == null || typeFilter(featureType)))
{
AddMetaFeature(featureType);
}
}
}
}
private void RebuildRelationships()
{
m_relationships.Clear();
foreach (MetaFeature metaFeature in m_metaFeatures.Values)
{
if (metaFeature.FeatureType != typeof(GlobalContext))
{
FeatureAttribute attr = ReflectionHelper.GetAttribute <FeatureAttribute>(metaFeature.FeatureType);
Debug.Assert(attr != null);
AddMetaRelationship(
metaFeature,
MetaRelationshipKind.Parent,
FindMetaFeature(attr.Container));
}
}
m_relationshipsDirty = false;
}