de.zib.scalaris.operations
Interface TransactionSingleOpOperation

All Superinterfaces:

Operation

All Known Implementing Classes:

AddDelOnListOp, AddOnNrOp, PartialReadOp, ReadOp, ReadRandomFromListOp, ReadSublistOp, TestAndSetOp, WriteOp

public interface TransactionSingleOpOperation
extends Operation

An operation suitable for use in TransactionSingleOp.

Since:

3.14

Version:

3.18

Author:

Nico Kruber, kruber@zib.de

Method Summary

Object

processResultSingle() Processes the result set by Operation.setResult(OtpErlangObject, boolean) assuming that operation was committed.

Methods inherited from interface de.zib.scalaris.operations.Operation

getErlang, getKey, getResult, getResultCompressed, processResult, setResult

Method Detail

processResultSingle

Object processResultSingle()
                           throws NotFoundException,
                                  KeyChangedException,
                                  NotANumberException,
                                  NotAListException,
                                  AbortException,
                                  EmptyListException,
                                  UnknownException

Processes the result set by Operation.setResult(OtpErlangObject, boolean) assuming that operation was committed. In contrast to Operation.processResult() operations like WriteOp will throw a proper AbortException for their commit part instead of an UnknownException. Note: the created value is not cached!

Returns:

a (potentially) read value (may be null)

Throws:

NotFoundException - if the requested key does not exist

KeyChangedException - if the key did not match old_value

NotANumberException - if the previously stored value was not a number

NotAListException - if the previously stored value was no list

EmptyListException - if the stored value is an empty list but the op requires a non-empty list

AbortException - if a commit failed

UnknownException - if any other error occurs

Since:

3.18