API java: get old variable value

Q&A
1

Hi,
I have an active process with three tasks (task1, task2, task3) and one variable “name”.
Each task sets the value of the variable name:
task1 => name = ‘Pippo’
task2 => name = ‘Pluto’
task3 => name = ‘Mario’

Using
processAPI.getProcessDataInstances
or
processAPI.getArchivedProcessDataInstances
Bonita always returns the value of task3 Mario.

How should I do to get the value of the task1 ‘Pippo’?

Thanks
Manolo

1 Like
2

Hi Manolo,

I don’t think there such a method in the API.
But you can use the method ProcessAPI#evaluateExpressionsOnCompletedActivityInstance with an expression of type Variable.
Something like:

Map<Expression, Map<String, Serializable>> expressions = new HashMap<Expression, Map<String,Serializable>>();
ExpressionBuilder expressionBuilder = new ExpressionBuilder();
expressionBuilder.createDataExpression(“name”, String.class.getName());
expressions.put(expressionBuilder.done(), new HashMap<String, Serializable>());
Map<String, Serializable> evaluationResult = processAPI.evaluateExpressionsOnCompletedActivityInstance(archivedActivityInstanceId, expressions);
String nameDataValue = evaluationResult.get(“name”);

Hope that helps
Anthony

3

Ok, thanks.

I try it.

Manolo