ModificationObserverBehavior (Camunda Platform Javadocs 7.16.18-ee)

All Superinterfaces:

ActivityBehavior, CoreActivityBehavior<ActivityExecution>

All Known Implementing Classes:

MultiInstanceActivityBehavior, ParallelMultiInstanceActivityBehavior, SequentialMultiInstanceActivityBehavior
```
public interface ModificationObserverBehavior
extends ActivityBehavior
```
When a (scope) activity behavior implements this behavior, its scope execution is notified in case of an external modification about the following:
- the scope execution is newly created
- a new concurrent execution is created in that scope
- a concurrent execution is removed in that scope
Author:

Thorben Lindhauer

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ActivityExecution`	`createInnerInstance(ActivityExecution scopeExecution)`	Returns an execution that can be used to execute an activity within that scope.
`void`	`destroyInnerInstance(ActivityExecution concurrentExecution)`	implement to destroy an execution in this scope and handle the scope's reorganization (e.g.
`java.util.List<ActivityExecution>`	`initializeScope(ActivityExecution scopeExecution, int nrOfInnerInstances)`	Implement to customize initialization of the scope.

Methods inherited from interface org.camunda.bpm.engine.impl.pvm.delegate.ActivityBehavior
execute

- Method Detail
  - initializeScope
```
java.util.List<ActivityExecution> initializeScope(ActivityExecution scopeExecution,
                                                  int nrOfInnerInstances)
```
    Implement to customize initialization of the scope. Called with the scope execution already created. Implementations may set variables, etc. Implementations should provide return as many executions as there are requested by the argument. Valid number of instances are >= 0.
  - createInnerInstance
```
ActivityExecution createInnerInstance(ActivityExecution scopeExecution)
```
    Returns an execution that can be used to execute an activity within that scope. May reorganize other executions in that scope (e.g. implement to override the default pruning behavior).
  - destroyInnerInstance
```
void destroyInnerInstance(ActivityExecution concurrentExecution)
```
    implement to destroy an execution in this scope and handle the scope's reorganization (e.g. implement to override the default pruning behavior). The argument execution is not yet removed.