Package org.apache.bookkeeper.bookie

Class EntryKeyValue

java.lang.Object

org.apache.bookkeeper.bookie.EntryKey

org.apache.bookkeeper.bookie.EntryKeyValue

public class EntryKeyValue
extends EntryKey

An entry Key/Value. EntryKeyValue wraps a byte array and takes offsets and lengths into the array to interpret the content as entry blob.

Field Summary

Fields inherited from class org.apache.bookkeeper.bookie.EntryKey

COMPARATOR, entryId, ledgerId

Constructor Summary

Constructors

Constructor	Description
EntryKeyValue(long ledgerId, long entryId, byte[] bytes)	Creates a EntryKeyValue from the start of the specified byte array.
EntryKeyValue(long ledgerId, long entryId, byte[] bytes, int offset, int length)	Creates a EntryKeyValue from the start of the specified byte array.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object other)
byte[]	getBuffer()
int	getLength()
int	getOffset()
io.netty.buffer.ByteBuf	getValueAsByteBuffer()	Returns the blob wrapped in a new ByteBuffer.
int	hashCode()
String	toString()	String representation.
(package private) int	writeToByteBuffer(ByteBuffer dst)	Write EntryKeyValue blob into the provided byte buffer.

Methods inherited from class org.apache.bookkeeper.bookie.EntryKey

getEntryId, getLedgerId

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

EntryKeyValue

public EntryKeyValue(long ledgerId,
 long entryId,
 byte[] bytes)

Creates a EntryKeyValue from the start of the specified byte array. Presumes bytes content contains the value portion of a EntryKeyValue.

Parameters:

bytes - byte array

EntryKeyValue

public EntryKeyValue(long ledgerId,
 long entryId,
 byte[] bytes,
 int offset,
 int length)

Creates a EntryKeyValue from the start of the specified byte array. Presumes bytes content contains the value portion of a EntryKeyValue.

Parameters:

bytes - byte array

offset - offset in bytes as start of blob

length - of blob

Method Details

getBuffer

public byte[] getBuffer()

Returns:

The byte array backing this EntryKeyValue.

getOffset

public int getOffset()

Returns:

Offset into getBuffer() at which the EntryKeyValue starts.

getLength

public int getLength()

Returns:

Length of bytes this EntryKeyValue occupies in getBuffer().

getValueAsByteBuffer

public io.netty.buffer.ByteBuf getValueAsByteBuffer()

Returns the blob wrapped in a new ByteBuffer.

Returns:

the value

writeToByteBuffer

int writeToByteBuffer(ByteBuffer dst)

Write EntryKeyValue blob into the provided byte buffer.

Parameters:

dst - the bytes buffer to use

Returns:

The number of useful bytes in the buffer.

Throws:

IllegalArgumentException - an illegal value was passed or there is insufficient space remaining in the buffer

toString

public String toString()

String representation.

Overrides:

toString in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class EntryKey

hashCode

public int hashCode()

Overrides:

hashCode in class EntryKey