private IAssembler <TObject, TConfiguration> GetAssembler(TConfiguration objectConfiguration)
{
bool exists = false;
Type type = objectConfiguration.GetType();
IAssembler <TObject, TConfiguration> assembler;
lock (assemblersMappingLock)
{
exists = assemblersMapping.TryGetValue(type, out assembler);
}
if (exists)
{
return(assembler);
}
AssemblerAttribute assemblerAttribute = GetAssemblerAttribute(type);
if (!typeof(IAssembler <TObject, TConfiguration>).IsAssignableFrom(assemblerAttribute.AssemblerType))
{
throw new InvalidOperationException(
string.Format(
Resources.Culture,
Resources.ExceptionAssemblerTypeNotCompatible,
objectConfiguration.GetType().FullName,
typeof(IAssembler <TObject, TConfiguration>),
assemblerAttribute.AssemblerType.FullName));
}
assembler = (IAssembler <TObject, TConfiguration>)Activator.CreateInstance(assemblerAttribute.AssemblerType);
lock (assemblersMappingLock)
{
assemblersMapping[type] = assembler;
}
return(assembler);
}
private AssemblerAttribute GetAssemblerAttribute(Type type)
{
AssemblerAttribute assemblerAttribute
= Attribute.GetCustomAttribute(type, typeof(AssemblerAttribute)) as AssemblerAttribute;
if (assemblerAttribute == null)
{
throw new InvalidOperationException(
string.Format(
Resources.Culture,
Resources.ExceptionAssemblerAttributeNotSet,
type.FullName));
}
return(assemblerAttribute);
}
public void AssemblerAttributeWithCompatibleTypeWorks()
{
AssemblerAttribute attribute = new AssemblerAttribute(typeof(MockAssembler));
}
public void AssemblerAttributeWithNullTypeThrows()
{
AssemblerAttribute attribute = new AssemblerAttribute(null);
}