UpdateFunction (OpenDJ Public API Javadoc 7.2.5-20240524201627-49403efab3a3556b93d8ee62f263ca29a7e752ef Documentation)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface UpdateFunction
```
Function that computes the new value of a record for a Read-Modify-Write operation inside a transaction.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ByteSequence`	`computeNewValue(ByteSequence oldValue)`	Computes the new value for a record based on the record's existing content.

- Method Detail
  - computeNewValue
```
ByteSequence computeNewValue(ByteSequence oldValue)
```
    Computes the new value for a record based on the record's existing content.
    
    Parameters:
    
    oldValue - The record's existing content, or null if the record does not exist at the moment and is about to be created.
    
    Returns:
    
    The new value for the record (which may be null if the record should be removed), or the old value if no update is required.