NullAttribute (Undertow 1.4.13.Final-SNAPSHOT API)

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java.lang.Object
- io.undertow.attribute.NullAttribute

All Implemented Interfaces:: ExchangeAttribute

public class NullAttribute
extends Object
implements ExchangeAttribute

A cookie

Author:: Stuart Douglas

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class NullAttribute.Builder

Field Summary

Fields
Modifier and Type Field and Description

static NullAttribute INSTANCE

static String NAME

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`readAttribute(HttpServerExchange exchange)` Resolve the attribute from the HTTP server exchange.
`void`	`writeAttribute(HttpServerExchange exchange, String newValue)` Sets a new value for the attribute.

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

- Field Detail
  - NAME
```
public static final String NAME
```
    See Also:
    
    Constant Field Values
  - INSTANCE
```
public static final NullAttribute INSTANCE
```
- Method Detail
  - readAttribute
```
public String readAttribute(HttpServerExchange exchange)
```
    Description copied from interface: ExchangeAttribute
    
    Resolve the attribute from the HTTP server exchange. This may return null if the attribute is not present.
    
    Specified by:
    
    readAttribute in interface ExchangeAttribute
    
    Parameters:
    
    exchange - The exchange
    
    Returns:
    
    The attribute
  - writeAttribute
```
public void writeAttribute(HttpServerExchange exchange,
                           String newValue)
                    throws ReadOnlyAttributeException
```
    Description copied from interface: ExchangeAttribute
    
    Sets a new value for the attribute. Not all attributes are writable.
    
    Specified by:
    
    writeAttribute in interface ExchangeAttribute
    
    Parameters:
    
    exchange - The exchange
    
    newValue - The new value for the attribute
    
    Throws:
    
    ReadOnlyAttributeException - when attribute cannot be written

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