기존의 activity diagram 문법 은 몇몇 제약과 단점이 있다.(예를 들면, 유지보수가 어렵다.) 그래서 완전 새로운 문법과 구현이 베타버전으로 고안되었고, 우리는 더 나은 포맷과 문법으로 정의할 수 있었다. 이 새로운 구현의 또 다른 장점은 (시퀀스 다이어그램과 같이) Graphviz를 설치할 필요 없이 수행된다는 것이다. 새로운 구문이 이전 구문을 대체할 것이다. 그러나 호환성을 보장하기 위해 이전 구문이 여전히 인식될 것이다. 새로운 구문으로 이전을 권장한다.
Simple action
Activities label starts with : and ends with ;. Text formatting can be done using creole wiki syntax. They are implicitly linked in their definition order.
@startuml
:Hello world;
:This is defined on
several **lines**;
@enduml
Start/Stop
You can use start and stop keywords to denote the beginning and the end of a diagram.
@startuml
start
:Hello world;
:This is defined on
several **lines**;
stop
@enduml
You can also use the end keyword.
@startuml
start
:Hello world;
:This is defined on
several **lines**;
end
@enduml
Conditional
You can use if, then and else keywords to put tests if your diagram. Labels can be provided using parentheses.
@startuml
start
if (Graphviz installed?) then (yes)
:process all\ndiagrams;
else (no)
:process only
__sequence__ and __activity__ diagrams;
endif
stop
@enduml
You can use the elseif keyword to have several tests :
@startuml
start
if (condition A) then (yes)
:Text 1;
elseif (condition B) then (yes)
:Text 2;
stop
elseif (condition C) then (yes)
:Text 3;
elseif (condition D) then (yes)
:Text 4;
else (nothing)
:Text else;
endif
stop
@enduml
Repeat loop
You can use repeat and repeatwhile keywords to have repeat loops.
@startuml
start
repeat
:read data;
:generate diagrams;
repeat while (more data?) is (yes)
->no;
stop
@enduml
It is also possible to use a full action as repeat target and insert an action in the return path using the backward keyword.
@startuml
start
repeat :foo as starting label;
:read data;
:generate diagrams;
backward:This is backward;
repeat while (more data?)
stop
@enduml
While loop
You can use while and end while keywords to have repeat loops.
It is possible to provide a label after the endwhile keyword, or using the is keyword.
@startuml
while (check filesize ?) is (not empty)
:read file;
endwhile (empty)
:close file;
@enduml
Parallel processing
You can use fork, fork again and end fork keywords to denote parallel processing.
@startuml
start
if (multiprocessor?) then (yes)
fork
:Treatment 1;
fork again
:Treatment 2;
end fork
else (monoproc)
:Treatment 1;
:Treatment 2;
endif
@enduml
Notes
Text formatting can be done using creole wiki syntax. A note can be floating, using floating keyword.
@startuml
start
:foo1;
floating note left: This is a note
:foo2;
note right
This note is on several
//lines// and can
contain <b>HTML</b>
====
* Calling the method ""foo()"" is prohibited
end note
stop
@enduml
@startuml
start
:starting progress;
#HotPink:reading configuration files
These files should be edited at this point!;
#AAAAAA:ending of the process;
@enduml
Arrows
Using the -> notation, you can add texts to arrow, and change their color. It's also possible to have dotted, dashed, bold or hidden arrows.
@startuml
:foo1;
-> You can put text on arrows;
if (test) then
-[#blue]->
:foo2;
-[#green,dashed]-> The text can
also be on several lines
and **very** long...;
:foo3;
else
-[#black,dotted]->
:foo4;
endif
-[#gray,bold]->
:foo5;
@enduml
It's possible to remove an arrow using the detach keyword.
@startuml
:start;
fork
:foo1;
:foo2;
fork again
:foo3;
detach
endfork
if (foo4) then
:foo5;
detach
endif
:foo6;
detach
:foo7;
stop
@enduml
SDL
By changing the final ; separator, you can set different rendering for the activity:
|
<
>
/
]
}
@startuml
:Ready;
:next(o)|
:Receiving;
split
:nak(i)<
:ack(o)>
split again
:ack(i)<
:next(o)
on several lines|
:i := i + 1]
:ack(o)>
split again
:err(i)<
:nak(o)>
split again
:foo/
split again
:i > 5}
stop
end split
:finish;
@enduml
Complete example
@startuml
start
:ClickServlet.handleRequest();
:new page;
if (Page.onSecurityCheck) then (true)
:Page.onInit();
if (isForward?) then (no)
:Process controls;
if (continue processing?) then (no)
stop
endif
if (isPost?) then (yes)
:Page.onPost();
else (no)
:Page.onGet();
endif
:Page.onRender();
endif
else (false)
endif
if (do redirect?) then (yes)
:redirect process;
else
if (do forward?) then (yes)
:Forward request;
else (no)
:Render page template;
endif
endif
stop
@enduml
Hitchhiker's Guide
