If else condition, also called alternatives in UML terms can indeed be represented in sequence diagrams. Here is a link where you can find some nice resources on the subject http://www.ibm.com/developerworks/rational/library/3101.html
An association almost always implies that one object has the other object as a field/property/attribute (terminology differs). A dependency typically (but not always) implies that an object accepts another object as a method parameter, instantiates, or uses another object. A dependency is very much implied by an association.
I wrote Class Visualizer, which does it. It’s free tool which has all the mentioned functionality – I personally use it for the same purposes, as described in this post. For each browsed class it shows 2 instantly generated class diagrams: class relations and class UML view. Class relations diagram allows to traverse through the … Read more
Maybe this can help you, but i don’t think you will find the perfect explanation: The difference is one of implication. Aggregation denotes whole/part relationships whereas associations do not. However, there is not likely to be much difference in the way that the two relationships are implemented. That is, it would be very difficult to … Read more
There’s also the PHP UML tool available from pear. PHP_UML: Can generate UML/XMI files in version 1.4, or in version 2.1 (logical, component, and deployment views) Can generate an API documentation in HTML format Can generate PHP code (code skeleton) from a given XMI file Can convert UML/XMI content from version 1.4 to version 2.1 … Read more
Aggregation implies a relationship where the child can exist independently of the parent. Example: Class (parent) and Student (child). Delete the Class and the Students still exist. Composition implies a relationship where the child cannot exist independent of the parent. Example: House (parent) and Room (child). Rooms don’t exist separate to a House. The above … Read more
You may have heard of Pylint that helps statically checking Python code. Few people know that it comes with a tool named Pyreverse that draws UML diagrams from the Python code it reads. Pyreverse uses Graphviz as a backend. It is used like this: pyreverse -o png -p yourpackage . where the . can also … Read more
Here’s some explanations from the Visual Studio 2015 docs: UML Class Diagrams: Reference: https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2015/modeling/uml-class-diagrams-reference 5: Association: A relationship between the members of two classifiers. 5a: Aggregation: An association representing a shared ownership relationship. The Aggregation property of the owner role is set to Shared. 5b: Composition: An association representing a whole-part relationship. The Aggregation property … Read more
As a rule of thumb: class Person { private Heart heart; private List<Hand> hands; } class City { private List<Tree> trees; private List<Car> cars } In composition (Person, Heart, Hand), “sub objects” (Heart, Hand) will be destroyed as soon as Person is destroyed. In aggregation (City, Tree, Car) “sub objects” (Tree, Car) will NOT be … Read more
Hope this helps. It describes the various types of factories. I used the Head First Design Patterns book as my reference. I used yuml.me to diagram. Static Factory Is a class with a Static Method to product various sub types of Product. Simple Factory Is a class that can produce various sub types of Product. … Read more