de.zib.scalaris.executor

Interface ScalarisOp

All Known Implementing Classes:

ScalarisChangeListOp1, ScalarisChangeListOp2, ScalarisIncrementOp1, ScalarisIncrementOp2, ScalarisListAppendRemoveOp1, ScalarisListAppendRemoveOp2, ScalarisReadOp, ScalarisWriteOp

public interface ScalarisOp

Interface for arbitrary Scalaris operations.

Since:

3.13

Version:

3.13

Author:

Nico Kruber, kruber@zib.de

Method Summary

Methods

Modifier and Type	Method and Description
int	doPhase(int phase, int firstOp, ResultList results, RequestList requests) Executes the given phase.
String	toString()
int	workPhases() Gets the number of work phases needed by this operation (not including the final result verification phase).

Method Detail

workPhases

int workPhases()

Gets the number of work phases needed by this operation (not including the final result verification phase).

Returns:

number of required phases

doPhase

int doPhase(int phase,
          int firstOp,
          ResultList results,
          RequestList requests)
            throws OtpErlangException,
                   UnknownException,
                   IllegalArgumentException

Executes the given phase.

Parameters:

phase - the number of the current phase

firstOp - the current operation's index in the result list

results - the results from the previous operations (may be null if there was none)

requests - the requests for the next operations (may be null if there are none, i.e. in the verification phase)

Returns:

the number of processed operations from the results list

Throws:

OtpErlangException - if an error occured verifying a result from previous operations

UnknownException - if an error occured verifying a result from previous operations

IllegalArgumentException - if the given work phase is not supported

See Also:

workPhases()

toString

String toString()

Overrides:

toString in class Object