public static Type GetEntityType(this PropertyInfo property, out EnclosedType enclosedType)
{
var type = property.PropertyType;
enclosedType = EnclosedType.None;
var typeInfo = type.GetTypeInfo();
if (type.IsArray)
{
type = type.GetElementType();
enclosedType = EnclosedType.Array;
}
else if (typeInfo.IsGenericType && typeof(List <>).GetTypeInfo().IsAssignableFrom(type.GetGenericTypeDefinition().GetTypeInfo()))
{
type = typeInfo.GenericTypeArguments[0];
enclosedType = EnclosedType.List;
}
else if (typeInfo.IsGenericType && typeof(ObservableCollection <>).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo().GetGenericTypeDefinition().GetTypeInfo()))
{
type = typeInfo.GenericTypeArguments[0];
enclosedType = EnclosedType.ObservableCollection;
}
return(type);
}
private static IEnumerable CreateEnclosedType(Type entityType, EnclosedType enclosedType, IList queryResults)
{
switch (enclosedType)
{
case EnclosedType.List:
case EnclosedType.ObservableCollection:
var collectionType = enclosedType == EnclosedType.List ? typeof(List <>) : typeof(ObservableCollection <>);
var list = (IList)Activator.CreateInstance(collectionType.MakeGenericType(entityType));
foreach (var result in queryResults)
{
list.Add(result);
}
return(list);
case EnclosedType.Array:
var array = Array.CreateInstance(entityType, queryResults.Count);
for (var i = 0; i < queryResults.Count; i++)
{
array.SetValue(queryResults[i], i);
}
return(array);
}
return(null);
}
public void TestEntityTypeArray()
{
var typeA = typeof(DummyClassA);
var property = typeA.GetProperty("ManyToManyD");
var expectedType = typeof(DummyClassD);
const EnclosedType expectedContainerType = EnclosedType.Array;
EnclosedType enclosedType;
var entityType = property.GetEntityType(out enclosedType);
Assert.AreEqual(expectedType, entityType);
Assert.AreEqual(expectedContainerType, enclosedType);
}
public void TestEntityTypeObject()
{
var typeA = typeof(DummyClassA);
var property = typeA.GetProperty("OneB");
var expectedType = typeof(DummyClassB);
const EnclosedType expectedContainerType = EnclosedType.None;
EnclosedType enclosedType;
var entityType = property.GetEntityType(out enclosedType);
Assert.AreEqual(expectedType, entityType);
Assert.AreEqual(expectedContainerType, enclosedType);
}
public void TestEntityTypeList()
{
var typeA = typeof(DummyClassA);
var property = typeA.GetProperty("OneToManyC");
var expectedType = typeof(DummyClassC);
const EnclosedType expectedContainerType = EnclosedType.List;
EnclosedType enclosedType;
var entityType = property.GetEntityType(out enclosedType);
Assert.AreEqual(expectedType, entityType);
Assert.AreEqual(expectedContainerType, enclosedType);
}
