com.twitter.distributedlog

Class LogRecord.Reader

java.lang.Object

com.twitter.distributedlog.LogRecord.Reader

Enclosing class:

LogRecord

public static class LogRecord.Reader
extends Object

This class is a package private class for reading log records from the persistent

Constructor Summary

Constructors

Constructor and Description
LogRecord.Reader(RecordStream recordStream, DataInputStream in, long startSequenceId) Construct the reader
LogRecord.Reader(RecordStream recordStream, DataInputStream in, long startSequenceId, boolean deserializeRecordSet)

Method Summary

Methods

Modifier and Type	Method and Description
LogRecordWithDLSN	readOp() Read an operation from the input stream.
boolean	skipTo(DLSN dlsn)
boolean	skipTo(long txId, boolean skipControl)

Methods inherited from class java.lang.Object

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

Constructor Detail

LogRecord.Reader

public LogRecord.Reader(RecordStream recordStream,
                DataInputStream in,
                long startSequenceId)

Construct the reader

Parameters:

in - The stream to read from.

LogRecord.Reader

public LogRecord.Reader(RecordStream recordStream,
                DataInputStream in,
                long startSequenceId,
                boolean deserializeRecordSet)

Method Detail

readOp

public LogRecordWithDLSN readOp()
                         throws IOException

Read an operation from the input stream.

Note that the objects returned from this method may be re-used by future calls to the same method.

Returns:

the operation read from the stream, or null at the end of the file

Throws:

IOException - on error.

skipTo

public boolean skipTo(long txId,
             boolean skipControl)
               throws IOException

Throws:

IOException

skipTo

public boolean skipTo(DLSN dlsn)
               throws IOException

Throws:

IOException