Package org.apache.bookkeeper.streaming

Class LedgerInputStream

java.lang.Object

java.io.InputStream

org.apache.bookkeeper.streaming.LedgerInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class LedgerInputStream
extends InputStream

An input stream on reading data from a ledger.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) byte[]	bbytes
(package private) int	defaultSize
(package private) int	increment
(package private) long	lastEntry
(package private) Enumeration<LedgerEntry>	ledgerSeq

Constructor Summary

Constructors

Constructor	Description
LedgerInputStream(LedgerHandle lh)	construct a outputstream from a ledger handle.
LedgerInputStream(LedgerHandle lh, int size)	construct a outputstream from a ledger handle.

Method Summary

Modifier and Type	Method	Description
void	close()	Method close currently doesn't do anything.
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Details

bbytes

byte[] bbytes

lastEntry

long lastEntry

increment

int increment

defaultSize

int defaultSize

ledgerSeq

Enumeration<LedgerEntry> ledgerSeq

Constructor Details

LedgerInputStream

public LedgerInputStream(LedgerHandle lh)
                  throws BKException,
InterruptedException

construct a outputstream from a ledger handle.

Parameters:

lh - ledger handle

Throws:

BKException - when encountered bookkeeper exceptions

InterruptedException - when opening a ledger input stream is interrupted.

LedgerInputStream

public LedgerInputStream(LedgerHandle lh,
 int size)
                  throws BKException,
InterruptedException

construct a outputstream from a ledger handle.

Parameters:

lh - the ledger handle

size - the size of the buffer

Throws:

BKException - when encountered bookkeeper exceptions

InterruptedException - when opening a ledger input stream is interrupted.

Method Details

close

public void close()

Method close currently doesn't do anything. The application is supposed to open and close the ledger handle backing up a stream (LedgerHandle).

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
 int off,
 int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException