org.objectweb.jotm.impl.core.conflict
Class LockConversionTable

java.lang.Object
  |
  +--org.objectweb.jotm.impl.core.conflict.LockConversionTable

public class LockConversionTable

extends java.lang.Object

Lock conversion table is a mean for converting a mode by which a lock is acquired. The class implements the lock conversion table that calculates suprema of given lock modes from the given conflict table.

Constructor Summary

LockConversionTable(ConflictTable iConflictTable)
Constructs a lock conversion table based on the given conflict table.

Method Summary

java.lang.String

getSupremum(java.lang.String requestMode, java.lang.String holdMode) Gets supremum of the given lock modes.

Methods inherited from class java.lang.Object

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

Constructor Detail

LockConversionTable

public LockConversionTable(ConflictTable iConflictTable)

Constructs a lock conversion table based on the given conflict table.

Parameters:

iConflictTable - conflict table

Method Detail

getSupremum

public java.lang.String getSupremum(java.lang.String requestMode,
                                    java.lang.String holdMode)
                             throws NoSupremumException

Gets supremum of the given lock modes.

Parameters:

requestMode - requested lock mode

holdMode - acquired lock mode

Returns:

supremum lock mode

Throws:

NoSupremumException - if supremum does not exist for given lock modes