Exit from while loop creates duplicate activity node

Question

Hi Team,

After exiting from a loop, i want to go back to an activity node that has already been defined but plantUML ends up creating a duplicate activity node

@startuml

start

if (conditionTrue?) then (true)

:DoSomething;

else

while (data available?)

  :read data;

  :generate diagrams;

endwhile

    :DoSomething;

endif

stop

@enduml

Is this a bug?

Sample output generated using https://www.planttext.com/ : https://tinyurl.com/y6hvhb3s

Answer 1

Hello,

For me it is not a bug. How did you code this with your favorite language (c#, java, etc)?

You can try to use connector, but it is not perfect

Comments

i tried this out on https://www.planttext.com/, which is the recommended online editor mentioned here : http://plantuml.com/external-links and this is what i got for my source code :
https://www.plantuml.com/plantuml/svg/NOun4iCW30JxUuLA_0MxY8ly8Fc04cIi6GmPa9Fl6oZJQKUdqwxLkDXvH61CW6xatZbvDStfMKwvJMIx97BMO0BcUtxaGspN51P0OXNWjsiKSfwDYR-iaL-nNG94Sn7sr3VBm2192fkGLmw5ZzfBaXyDFT0YVn-QpDRzyWTO6pNT2m00

---

Hello,
 It is not possible to code with a language like C# or java what you want to do without a Goto, which is not appropriate in my opinion. It is why, it is not possible with Activity diagram.

I create the diagram with the "goto"

http://www.plantuml.com/plantuml/png/7Ov1heCm34JtSmelmnLWyVaIDsWlu193B0Md2gQzVaDsVhOyy-RJkVfrPFG1q8t2MYogQx5dlUHl84zY5Bp1WF0_O5pAenpYIMsV0Ccd0D-aMIX4TYR-i6P-vVOC48rLED9zcJhkObBPXQBoNlauxn2BFG6zOH7dDVMjRcXkvOsvGHFz0G00

Another possibility is to change a little bit the code and write

@startuml
start

if (conditionFalse?) then

while (data available?)

  :read data;

  :generate diagrams;

endwhile
endif

 :DoSomething;
@enduml

http://www.plantuml.com/plantuml/png/7Ox13S8m34NldiB7ia9xe0V40apm8MvYAN6anC3wJNDxVa-o_juTpRybqmGYFNZvL0lgMks9tEL-OqzYJFHFceMN00VZ1yruvv69cDSc27oLRPvHJ1fSE2XYG-b3YuNvuG8zY7Xzr5SjuaajRhGFFOQS