CaseInstanceLifecycleListener (Flowable - CMMN API 6.8.0 API)

```
public interface CaseInstanceLifecycleListener
```
[Experimental] An interface for listener implementations that get notified when the state of a case instance changes.

Author:

martin.grofcik

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`getSourceState()`
`String`	`getTargetState()`
`void`	`stateChanged(CaseInstance caseInstance, String oldState, String newState)`	Will be called when the state of a `CaseInstance` changes and the `getSourceState()` and `getTargetState()` match.

- Method Detail
  - getSourceState
```
String getSourceState()
```
    Returns:
    
    The type a case instance is changing from, use a value from CaseInstanceState. This listener will only receive elements where the state changing from this value to another one. Return null or the empty String to listen to any state.
  - getTargetState
```
String getTargetState()
```
    Returns:
    
    The type a case instance is changing to, use a value from CaseInstanceState. This listener will only receive elements where the state changing from this value to another one. Return null or the empty String to listen to any state.
  - stateChanged
```
void stateChanged(CaseInstance caseInstance,
                  String oldState,
                  String newState)
```
    Will be called when the state of a CaseInstance changes and the getSourceState() and getTargetState() match.