12+ Sequence Diagram With Loop. Object or entity that acts in the diagram activation. Should i not include it?
The sequential nature of one way is to show a frame with the label loop and a constraint indicating what is being looped. It shows the messages that pass between participants and objects in the if one or more interactions form a loop, or require a condition to be met to end the interaction, enclose those interactions in a fragment shape However, the condition for a repetition is always an incorrect pin.
You may model loops and conditions using fragments.
12+ Sequence Diagram With Loop. Use combined fragment with operator loop for iteration notation and add another one combined fragment with operator alt for conditional messages grouping inside loop. Sequence diagrams are good for showing what's going on, for extracting requirements and for interacting with customers. The observed class is calling update in the observer every 5 seconds in a loop. It shows the messages that pass between participants and objects in the if one or more interactions form a loop, or require a condition to be met to end the interaction, enclose those interactions in a fragment shape