com.bigdata.service

Class DistributedTransactionService.SnapshotHelper

java.lang.Object

com.bigdata.service.DistributedTransactionService.SnapshotHelper

Enclosing class:

DistributedTransactionService

public static class DistributedTransactionService.SnapshotHelper
extends Object

A helper class for reading and writing snapshots of the commit time index. The image contains the commit timestamps in order.

Note: The caller must prevent concurrent changes to the index.

Author:

Bryan Thompson

Constructor Summary

Constructors

Constructor and Description
DistributedTransactionService.SnapshotHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static long	read(CommitTimeIndex ndx, DataInputStream is)
static long	read(CommitTimeIndex ndx, File file)
static long	write(CommitTimeIndex ndx, DataOutputStream os)
static long	write(CommitTimeIndex ndx, File file)

Methods inherited from class java.lang.Object

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

Constructor Detail

DistributedTransactionService.SnapshotHelper

public DistributedTransactionService.SnapshotHelper()

Method Detail

read

public static long read(CommitTimeIndex ndx,
        File file)
                 throws IOException

Throws:

IOException

read

public static long read(CommitTimeIndex ndx,
        DataInputStream is)
                 throws IOException

Throws:

IOException

write

public static long write(CommitTimeIndex ndx,
         File file)
                  throws IOException

Throws:

IOException

write

public static long write(CommitTimeIndex ndx,
         DataOutputStream os)
                  throws IOException

Throws:

IOException