simpledb

Class Transaction

java.lang.Object

simpledb.Transaction

public class Transaction
extends java.lang.Object

Transaction encapsulates information about the state of a transaction and manages transaction commit / abort.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	started
private TransactionId	tid

Constructor Summary

Constructors

Constructor and Description
Transaction()

Method Summary

Methods

Modifier and Type	Method and Description
void	abort() Finish the transaction
void	commit() Finish the transaction
TransactionId	getId()
void	start() Start the transaction running
void	transactionComplete(boolean abort) Handle the details of transaction commit / abort

Methods inherited from class java.lang.Object

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

Field Detail

tid

private final TransactionId tid

started

volatile boolean started

Constructor Detail

Transaction

public Transaction()

Method Detail

start

public void start()

Start the transaction running

getId

public TransactionId getId()

commit

public void commit()
            throws java.io.IOException

Finish the transaction

Throws:

java.io.IOException

abort

public void abort()
           throws java.io.IOException

Finish the transaction

Throws:

java.io.IOException

transactionComplete

public void transactionComplete(boolean abort)
                         throws java.io.IOException

Handle the details of transaction commit / abort

Throws:

java.io.IOException