org.opends.server.backends.pluggable.spi

Interface UpdateFunction

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

Modifier and Type	Method and 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.