---
layout: pattern
title: Abstract Document
folder: abstract-document
permalink: /patterns/abstract-document/
categories: Structural
tags: 
 - Java
 - Difficulty-Intermediate
---

## Intent
Achieve flexibility of untyped languages and keep the type-safety 

![alt text](./etc/abstract-document_1.png "Abstract Document")

## Applicability
Use the Abstract Document Pattern when

* there is a need for dynamic properties
* you want a better way to organize domain
* you want loosely coupled system with flexibility of untyped languages

## Real world examples

* [Speedment](https://github.com/speedment/speedment)