com.atlassian.greenhopper.service.lexorank
Class LexoRankHealOperation

java.lang.Object
  com.atlassian.greenhopper.service.lexorank.LexoRankHealOperation

public class LexoRankHealOperation
extends java.lang.Object

Encapsulates a single rank heal operation in a command pattern.

A Heal operation is where two or more rows have the same rank and need to be made distinct without doing a balance operation.

First the rows to be healed are checked if they indeed contain duplicate rank values. If they don't, the operation completes without changing any rows. If there are duplicate rank values detected, the duplicating row's rank value will be changed.

This operation does not attempt to acquire a lock on the rows it is modifying.

Nested Class Summary

static interface	LexoRankHealOperation.CompleteHealOperation
static interface	LexoRankHealOperation.ForRankField
static interface	LexoRankHealOperation.RowsToHeal

Method Summary

static LexoRankHealOperation.ForRankField	builder(LexoRankDao lexoRankDao, LexoRankDaoContext lexoRankDaoContext, LexoRankStatisticsAgent lexoRankStatisticsAgent)
LexoRankOperationOutcome<java.lang.Boolean>	execute()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

builder

public static LexoRankHealOperation.ForRankField builder(LexoRankDao lexoRankDao,
                                                         LexoRankDaoContext lexoRankDaoContext,
                                                         LexoRankStatisticsAgent lexoRankStatisticsAgent)

execute

public LexoRankOperationOutcome<java.lang.Boolean> execute()