internal static TSchema GetInstance <TSchema>() where TSchema : ObjectSchema, new()
{
ObjectSchema.SchemaConstructorDelegate schemaConstructor = () => Activator.CreateInstance <TSchema>();
ObjectSchema instanceImpl = ObjectSchema.GetInstanceImpl(typeof(TSchema), schemaConstructor);
return((TSchema)((object)instanceImpl));
}
internal static ObjectSchema GetInstance(Type schemaType)
{
if (null == schemaType)
{
throw new ArgumentNullException("schemaType");
}
if (!typeof(ObjectSchema).GetTypeInfo().IsAssignableFrom(schemaType.GetTypeInfo()))
{
throw new ArgumentException(string.Format("Invalid ObjectSchema Input Type: {0}", schemaType), "schemaType");
}
if (!ReflectionHelper.HasParameterlessConstructor(schemaType))
{
throw new ArgumentException(string.Format("Input type does not have a parameterless constructor: {0}", schemaType), "schemaType");
}
ObjectSchema.SchemaConstructorDelegate schemaConstructor = () => (ObjectSchema)Activator.CreateInstance(schemaType);
return(ObjectSchema.GetInstanceImpl(schemaType, schemaConstructor));
}
private static ObjectSchema GetInstanceImpl(Type schemaType, ObjectSchema.SchemaConstructorDelegate schemaConstructor)
{
ObjectSchema result;
if (!ObjectSchema.Instances.TryGetValue(schemaType, out result))
{
lock (ObjectSchema.InstancesLock)
{
if (!ObjectSchema.Instances.TryGetValue(schemaType, out result))
{
ObjectSchema objectSchema = schemaConstructor();
ObjectSchema.Instances = new Dictionary <Type, ObjectSchema>(ObjectSchema.Instances)
{
{
schemaType,
objectSchema
}
};
result = objectSchema;
}
}
}
return(result);
}
