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ActiveTM - A Topic Maps - Object Mapper
Jan 24, 2015
Currently, the most common way to programmatically access Topic Maps data is the use of a Topic Maps API, like TMAPI. Another approach, besides the use of a query language like TMQL, is the encapsulation of the Topic Maps related code in domain-specific model classes. This concept is similar to object-relational mapping (ORM) which encapsulates access to a relational database inside the model classes. These techniques decouple the data store specific code from the business logic. For ORM, there are several prevalent design patterns, most notable the Active Record pattern by Fowler. For Topic Maps, no such pattern is established. This paper introduces Active Topic Maps, a pattern for topic maps -- object mapping, the domain-specific language ActiveTMML to define such a mapping and a prototypical implementation, called ActiveTM. ActiveTM is based on Ruby Topic Maps and also supports the generation of web-formulars based on ActiveTMML definitions. This full-featured software stack greatly improves the development productivity of Topic Maps based portals compared to other solutions.
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ActiveTMA Topic Maps – Object Mapper
Benjamin Bockhttp://rtm.rubyforge.orgTMRA 2008Leipzig, 2008-10-17
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Schedule
What was?
What is?
What will be?
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What we have
• TMDM• TMAPI (old and new)• TMO• BSCPL• AR
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The Challenge
• TMDM offers ontological flexibility• TMAPI provides interface to TMDM
• It’s not domain-specific• We need to get closer to the
business
Current development approachesare too slow
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What has been done before?
• Most of us were just using someTMAPI-like interface
• NetworkedPlanet made Topic Map Objects
• Bogachev had some concepts... ...but did not implement them
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What are others doing?
• Holidays• Traveling• Object-Relational Mapping
• Active Record
• Throw more programmers at the problem (and that doesn‘t scale)
We have a problem
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Every programming problem can be solved with another layer of abstraction,except the problemof too many layers of abstraction.
“”
Source: documentation of Ick, http://ick.rubyforge.org/
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What we need
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Schedule
What was?
What is?
What will be?
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Domain Modeling
• investigate the domain of the customer
• find out what is important for the use case
• define domain model by stating• all subject types• their characteristics• and associations to other subjects
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After modeling...
• ideally, you should have some administrative CRUD interface now
• add domain-specific shapes for theend-user portal
[Not covered here: the dynamic perspective]
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ActiveTM
• ActiveTMML• the modeling language
• ActiveTM• a prototypical implementation• using Ruby and RTM
• Some assorted scripts which generate• Migrations, AR-Models, ...
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What does it look like?
class Person < ActiveTM::Base topic_map "http://psi.example.com/" psi "http://psi.example.com/ontology/person"
name :firstname names :middlenames name :lastname occurrence :age, :datatype => "xsd:integer" has_one :country, "inhabitant", "country-
inhabitant", :class => :Country
def fullname "#{firstname} #{lastname}" endend
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How is it used?
p = Person.create("johndoe")p.firstname = "John"p.add_middlename "George"p.lastname = "Doe"p.age = 25p.save
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Can I use it?
No.Not yet.Sorry.
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Schedule
What was?
What is?
What will be?
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What will be?
• depends on what we do...
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What we do
• write research proposal• do market research• do interviews
• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal
We‘re about here
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• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal
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• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal• write research proposal
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What we do
• create domain-specific portals
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What we do
• create domain-specific portals• using context-specific Shapes
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What we do
• create domain-specific portals• using context-specific Shapes• generate administration interfaces
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What we do
• create domain-specific portals• using context-specific Shapes• generate administration interfaces• using just the list of characteristics
we want to have in list, show, and edit-view
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What we doWhat will be?
• It‘s already in production (sort of...)• It‘s not pure Topic Maps, yet• But we‘re working on it
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Schedule
What was?
What is?
What will be?
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kthxbai!
Images: bigfoto.com
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kthxbaiVariation of ‘kthxbye’– the internet bastardization of “OK, thank you, goodbye”.
source: http://www.urbandictionary.com/
see also:http://icanhascheezburger.com/
Images: bigfoto.com
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