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Automation Interface, Add-Ins and Tools / Understanding Sequence Diagrams in detail

« on: May 05, 2022, 09:36:09 pm »

Dear All,

i'm new to the forum - therefore please correct me of something doesn't fit...

i'm currently analysing the behaviour of sequence diagrams. I would like to understand when a lifeline is activated or deactivated.
My current understandig is:

 - EA has a builtin logic which defines when a lifeline is activated or deactivated
 - the user can modify this behaviour through the user interface - extend activation or end activation or ...
 - these user modifications are stored in the database - in PDATA4 and connector.StateFlags.

Currently i'm retrieving these parameters from the database and the object model:

Code: [Select]

// Get PDATA4 from sql database - 1 means "is-return" is set and lifeline is deactivated
entry = Repository.SQLQuery ("SELECT PDATA4 FROM t_connector WHERE Connector_ID = " + connector.ConnectorID);

// Get value from PDATA4
isReturn = getValue ("<PDATA4>", "</PDATA4>", entry);

// get stateflags
entry = connector.StateFlags;

// check for keywords related to activation
activate    = getValue ("Activation=", ";", entry);
extendUp    = getValue ("ExtendActivationUp=", ";", entry);
actStopUp   = getValue ("StopActivation=", ";", entry);
actEndUp    = getValue ("EndActivation=", ";", entry);
actInitiate = getValue ("Initiate=", ";", entry);

...
// Here comes the "magic" ...
if ((activate == 0) &&
(isReturn  == 0) &&
(actStopUp == 0) &&
(actEndUp  == 0) &&
(extendUp  == 0) )
{
-> activate lifeline
} else
{
-> deactivate lifeline
}

But what i miss are the rules according to what are the unmodified lifelines are activated or deactivated.

Is there a description available?

Try and error leads to an extensive statemachine ... which will be probably faulty.

Best regards

Mouse