SharedStateWriter (vaadin-server 8.21.0 API)

java.lang.Object
- com.vaadin.server.communication.SharedStateWriter

All Implemented Interfaces:

java.io.Serializable
```
public class SharedStateWriter
extends java.lang.Object
implements java.io.Serializable
```
Serializes shared state changes to JSON.

Since:

7.1

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

SharedStateWriter()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.Set<java.lang.String>`	`write(UI ui, java.io.Writer writer)`	Writes a JSON object containing the pending state changes of the dirty connectors of the given UI.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SharedStateWriter
```
public SharedStateWriter()
```
- Method Detail
  - write
```
public java.util.Set<java.lang.String> write(UI ui,
                                             java.io.Writer writer)
                                      throws java.io.IOException
```
    Writes a JSON object containing the pending state changes of the dirty connectors of the given UI.
    
    Parameters:
    
    ui - The UI whose state changes should be written.
    
    writer - The writer to use.
    
    Returns:
    
    a set of connector ids with state changes
    
    Throws:
    
    java.io.IOException - If the serialization fails.