public void TestDynamicTypeBuilder()
{
var descriptor = new DynamicTypeDescriptorBuilder()
.HasName("SomeDynamicType")
.AddProperty <int>("A", config => config
.HasAttribute(() => new TestPropertyAttribute("name", "value"))
);
var type = DynamicTypeBuilder.Instance.CreateType(descriptor);
var ctor = Expression.Lambda <Func <object[], object> >(Expression.New(type.GetConstructor(Type.EmptyTypes)), Expression.Parameter(typeof(object[]))).Compile();
var o = ctor(new object[] { });
}
private Type BuildProjectedType()
{
if (configuration.CtorParameters.Any())
{
throw new InvalidOperationException("Cannot build projected type with explicit constructor parameter mapping");
}
var typeBuilder = new DynamicTypeDescriptorBuilder(configuration.ProjectedTypeName);
foreach (var member in configuration.Members)
{
typeBuilder.AddProperty(
member.ProjectedMember.GetName(),
//overriden type
member.AsType ??
//specified member type
member.ProjectedMember.GetMemberType() ??
//auto
(member.Source == null ?
GetMemberInfoType(
configuration.SourceType.GetMember(
GetSourceMemberNameFromMemberName(
member.ProjectedMember.GetName())).First()) :
//expression
GetExpression(member.Source, configuration.It)?.Type) ??
//fallback
typeof(object),
config =>
{
if (member.ProjectionTarget == ProjectionTarget.CtorParameter)
{
config.IsInitializedInConstructorOptional(member.CtorParameterName);
}
config.AsNullable(member.AsNullable);
});
}
return(DynamicTypeBuilder.Instance.CreateType(typeBuilder));
}
private static Type BuildKeyValueType(Type entityType, List <PropertyInfo> keyProperties)
{
var dynamicTypeBuilderDescriptor =
new DynamicTypeDescriptorBuilder("_" + entityType.FullName + CLASS_NAME_SUFFIX)
.HasBaseType <DomainKeyValue>();
keyProperties
.ForEach(x =>
{
dynamicTypeBuilderDescriptor.AddProperty(
x.Name,
x.PropertyType,
config => config
.HasSetter(GetSetAccessModifier.None)
.IsInitializedInConstructor()
);
});
var keyValueType = DynamicTypeBuilder.Instance.CreateType(dynamicTypeBuilderDescriptor);
return(keyValueType);
}
