I am doing research on UML class models. While pursuing that I need sample UML class models (preferably realistic and industry size).While searching on Internet, I do not came across any standard repository of class models. Kindly help me in getting such UML class models for my research work ?
You can see many diagrams simply searching for their names (class diagram, for example), in the Google search for pictures.
Also you can find many of them searching for different OOP patterns.
Many big and correct diagrams you can find in the UML standards - they use UML diagrams for defining UML diagram elements.
Related
I need to develop a system for a library system from Java & Netbeans. I am wondering do I have to include classes made from Netbeans for user interfaces in the class diagram. In addition to that suppose we have a class "Librarian". I assume that I can create two classes one for UI and one that including details in the class diagram and use it in the UI class. Or I can implement, what class diagram says directly in the UI class for "Librarian". Please tell me which is the correct way that software engineers are supposed do.
Whether or not to show something in a class diagram depends on the intention of the editor and what he wants to show to his audience. Often it's a good idea to create overview diagrams where you omit details. The overview is then accompanied by a couple of detail diagrams which are logically oriented at sub-domains which in turn help to understand the systems as a whole.
Also it's not uncommon to just leave out "obvious" things. If you work with known scaffolds in certain domains you must not describe that again and agin but just can assume that it's known. In your case that would be the GUI part which will be known implicitly. You might consider to create a sketch of the scaffold somewhere in a more general class diagram. This could be helpful for people coming from other worlds (and not knowing NetBeans like me).
Beware of drawing wall-papers that contain each and every detail in a single class diagram. Looks impressive but is absolutely useless (an anti-pattern if you like to call it that way).
I'm creating a project documentation for a Question management and generating system and need to draw class diagrams from that system.
My question:
I have a lot of dialogues and frames since I'm programming in Java. Should I include the GUIs with the diagram and relate them to other control classes?
I have a project and I'm required to produce the class and sequence diagram. It is a procurement website. My only problem is that I don't know how to associate the web pages (user interfaces) to these diagrams. If they are not needed what is the right way for me to include it in the diagrams because from a book I read there are "UserInterface" classes, so another question, what should be inside of these UI classes.Can someone give me an example. Thanks!
There are several levels of abstraction for UI modelling.
Use cases and state machines. These diagrams are made in human terms.
Planning on the server/page/frame level. Here UML deployment and component diagrams are useful.
Planning of the content of UI, defining elements and functonalities and connections between them WITHOUT choosing the concrete components. No standard for this, extremely important, stage. Use diagrams that you like. Class ones are usable, but in not standard reading.
Planning of the content of screen elements WITH choice of the UI components (frames, buttons and so on) and connecting functionalities to them. On this level you can use class and sequence diagrams.
Drawings of the planned screenshots. For this level there are no UML diagrams. And a common standard doesn't exist.
These levels require MANY diagrams. The lower the level, the more diagrams it needs. Putting user interfacES into one class diagram is possible for a minuscule project, but you can't say it SHOULD be done so.
In your class diagram you will normally describe/design the (data) model part of your application, while the user interface (UI) corresponds to the view part within a model-view-controller (MVC) architecture. As a UI cannot be designed with a class diagram, I cannot see any meaning for a "UserInterface" class.
However, there is a new modeling language for modeling user interfaces: the Interaction Flow Modeling Language (IFML), which has been adopted as a standard by the OMG in March 2013. If you are serious about UI modeling, then you should use that language.
Classes of UI can be modeled as ordinary UML classes. You can create stereotype "webpage" if you want of course. If it is needed to define internal structure of UI class use composition. In sequence diagram you can define interaction between instances of UI classes in common way.
Example:
Had been looking at overall architecture to understand Magento system.
-- Design Principle and Pattern used in Magento( Was able to find some blogs) and
-- UML diagrams of Magento Architecture( Didn't find anything).
For UML related point Was searching for
1) Magento Conceptual Schema.
Class Diagram, Activity Diagram, Use case Diagram or any any suggested UML diagram that gives in-depth understanding of Magento Architecture.
For example : I want to understand how FPC container are linked to block content.
It would be helpful if there was some model diagram showing the effect and relationship.
Or
If you look at shipping code complete $request model is passed.
So have a class diagram and some additional model diagram will html understand whether one should modify request while passing for shipping or modify each shipping module to get expected result.
Over all My idea is that of having Model diagrams that gives an insight as to how magento code flow works and if a developer wants to follow magento standards how he should proceed.
Had been looking at overall architecture
Didn't find anything
There is plenty of documentation. For example, have a look at this book: ISBN-13: 978-1782163060
So without us knowing what are you aiming at, there will be no reasonable hint to be given.
Was searching for 1) Magento Conceptual Schema.
What about "Magento Architecture"? "Magento UML"? "Magento Patterns"? :)
For example, have a look:
Magento Design Patterns
Class Diagram, Activity Diagram, Use case Diagram or any any suggested UML diagram that gives in-depth understanding of Magento Architecture.
I do not see how those relate to the overall architecture since they tend to focus on certain aspects or to be overly general.
Programmer Types:
Do you write extensive design documents for your programs or games?
Is using UML the standard method of diagramming your use cases?
Do you run the whole gamut of diagrams or sort of pick and choose along the way depending on the scope of your software and the number of developers on the team?
First,
If you make documentation, it should have a "clear" reason/purpose.
And this purpose is identify nature of your documentation.
Secondly:
Do not think documentation just in a "written form" or word document.
It may be in any form.Even it can be a "video" in which some guy
explain your major architecture decisons and why they choose
it[motivation]
Well, suppose that you want new team members "easily grab" what you are doing,how you are doing, and why you are doing this way.[ Be carefull all depends on your problem nature]
UML use case diagram may can give overall picture of your functional
requirements. It simply states who will use your system, and what they can
do with your system.
Short memos which state the important non-functional requirements
Short memos which states your major architecture decision and why you give this decisions
Maybe a component diagrams which shows your important components and their interfaces
If application tapology is important then may be a UML deployment diagram which shows how your system will be physically deployed.
But after all you can not document evething and you should not .You can generate whole system UML class diagram automatically with a UML tool, but how can this help a novice.
But you can put class diagrams for classes that do important and tricky
parts and draw sequence diagrams for those tricky parts which show how
they collaborate with other classes while they perform important and
tricky responsibilities.
The key for documentaion is puting yourself into your "audience" [ who
will read your doc] and ask yourself
If I was this document potantial "audience" will i read this document? [ If not why you make doc]
If I read this doc, will it help me in some way? [ it is effective]
Lastly, we do not live in "ideal word"...Sometimes you may find yourself doing doc for no real audience and no real reason just because of some "politics" and you should earn money
Well, in this situation UML will help. Draw boring, with many details [ genarally auotumatically generated] diagrams which no one read or understand but say "Oh you have extensive documentaion". In our software industry, UML is overemphasized, and many guys "buy" even bad doc if there is a UML diagrams in it.
That's all folks...