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com.atomikos.recovery.TxState Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2019 Atomikos
*
* LICENSE CONDITIONS
*
* See http://www.atomikos.com/Main/WhichLicenseApplies for details.
*/
package com.atomikos.recovery;
/**
* The states for a distributed transaction system.
*/
//@formatter:off
public enum TxState {
//OLTP States
MARKED_ABORT (false, false),
LOCALLY_DONE (false, false),
COMMITTED (false, false),
ABORTED (false, false),
ABANDONED (false, false),
TERMINATED (true, true),
HEUR_HAZARD (false, false, TERMINATED, ABANDONED),
//Recoverable States
HEUR_COMMITTED (false, false, TERMINATED, ABANDONED),
HEUR_ABORTED (false, false, TERMINATED, ABANDONED),
HEUR_MIXED (false, false, TERMINATED, ABANDONED),
COMMITTING (true, false, HEUR_ABORTED, HEUR_COMMITTED, HEUR_HAZARD, HEUR_MIXED, TERMINATED, ABANDONED),
ABORTING (false, false, HEUR_ABORTED, HEUR_COMMITTED, HEUR_HAZARD, HEUR_MIXED, TERMINATED, ABANDONED),
IN_DOUBT (true, false, ABORTING, COMMITTING, ABANDONED, TERMINATED),
PREPARING (false, false, IN_DOUBT, ABORTING, TERMINATED, ABANDONED),
ACTIVE (false, false, ABORTING, COMMITTING, PREPARING);
private boolean recoverableState;
private boolean finalState;
private TxState[] legalNextStates;
TxState (boolean recoverableState, boolean finalState, TxState... legalNextStates) {
this.finalState=finalState;
this.recoverableState=recoverableState;
this.legalNextStates=legalNextStates;
}
public boolean isFinalState() {
return finalState;
}
public boolean isFinalStateForOltp() {
return isFinalState() || this == ABANDONED;
}
public boolean isRecoverableState() {
return recoverableState;
}
public boolean transitionAllowedTo(TxState nextState) {
//transition to the same state...
if(nextState == this) {
return true;
}
for (TxState txState : legalNextStates) {
if(txState == nextState) {
return true;
}
}
return false;
}
public boolean isOneOf(TxState... state) {
for (int i = 0; i < state.length; i++) {
if(this==state[i])
return true;
}
return false;
}
public boolean isHeuristic() {
return isOneOf(HEUR_ABORTED, HEUR_COMMITTED, HEUR_HAZARD, HEUR_MIXED);
}
}
