UpdateRequest (SIP Big Group RA Type 3.1)

java.lang.Object
- com.opencloud.sip.biggroup.UpdateRequest

```
public abstract class UpdateRequest
extends Object
```
A function for updating an initial request before it is transmitted by the RA. An initial request is the INVITE that will be forwarded on the branches of the ForkActivity.

Field Summary

Fields
Modifier and Type Field Description

static UpdateRequest NULL
Null object implementation that doesn't modify the request.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract javax.sip.message.Request`	`apply(javax.sip.message.Request request)`	Apply updates to the initial request before it is sent on a branch
`boolean`	`isApplyOnce()`

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

- Field Detail
  - NULL
```
public static final UpdateRequest NULL
```
    Null object implementation that doesn't modify the request.
- Method Detail
  - isApplyOnce
```
public boolean isApplyOnce()
```
  - apply
```
public abstract javax.sip.message.Request apply(javax.sip.message.Request request)
```
    Apply updates to the initial request before it is sent on a branch
    
    Parameters:
    
    request - the initial request. It isn't necessary to clone() the request, the RA will have already done this as needed.
    
    Returns:
    
    the updated request object.