com.vaadin.flow.data.provider.DataChangeEvent API 23.1.17 | Vaadin

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com.vaadin.flow.data.provider.

java.lang.Object
- java.util.EventObject
- - com.vaadin.flow.data.provider.DataChangeEvent<T>

Type Parameters:

T - the data type

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

DataChangeEvent.DataRefreshEvent
```
public class DataChangeEvent<T>
extends EventObject
```
An event fired when the data of a DataProvider changes.

Since:

1.0

Author:

Vaadin Ltd

See Also:

DataProviderListener, Serialized Form

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class Description
  
  static class DataChangeEvent.DataRefreshEvent<T>
  An event fired when a single item of a DataProvider has been updated.
- Field Summary
  - Fields inherited from class java.util.EventObject
    source
- Constructor Summary
  
  Constructors
  Constructor Description
  
  DataChangeEvent(DataProvider<T,?> source)
  Creates a new DataChangeEvent event originating from the given data provider.
- Method Summary
  
  All Methods
  Modifier and Type Method Description
  
  DataProvider<T,?> getSource()
  
  void unregisterListener()
  Unregisters the event listener currently being invoked.
  - Methods inherited from class java.util.EventObject
    toString
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - DataChangeEvent
```
public DataChangeEvent(DataProvider<T,?> source)
```
    Creates a new DataChangeEvent event originating from the given data provider.
    
    Parameters:
    
    source - the data provider, not null
- Method Detail
  - getSource
```
public DataProvider<T,?> getSource()
```
    Overrides:
    
    getSource in class EventObject
  - unregisterListener
```
public void unregisterListener()
                        throws IllegalStateException
```
    Unregisters the event listener currently being invoked.
    This method can only be called from within an event listener otherwise it throws an IllegalStateException. Calling it will remove the current event listener so no further events are passed to it.
    
    Throws:
    
    IllegalStateException - if the method is called outside of the event listener.