Package crosby.binary.file

Class FileBlockPosition

java.lang.Object

crosby.binary.file.FileBlockBase

crosby.binary.file.FileBlockPosition

Direct Known Subclasses:

FileBlockReference

public class FileBlockPosition
extends FileBlockBase

Stores the position in the stream of a fileblock so that it can be easily read in a random-access fashion. We can turn this into a 'real' block by appropriately seeking into the file and doing a 'read'.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) long	data_offset	Offset into the file of the data part of the block
protected int	datasize

Fields inherited from class crosby.binary.file.FileBlockBase

indexdata, MAX_BODY_SIZE, MAX_HEADER_SIZE, type

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FileBlockPosition(java.lang.String type, com.google.protobuf.ByteString indexdata)

Method Summary

Modifier and Type	Method	Description
int	getDatasize()
(package private) static FileBlockPosition	newInstance(FileBlockBase base, long offset, int length)
(package private) FileBlock	parseData(byte[] buf)	Parse out and decompress the data part of a fileblock helper function.
(package private) static FileBlockPosition	parseFrom(com.google.protobuf.ByteString b)	TODO: Parse a serialized representation of this block reference
FileBlock	read(java.io.InputStream input)
com.google.protobuf.ByteString	serialize()	TODO: Convert this reference into a serialized representation that can be stored.

Methods inherited from class crosby.binary.file.FileBlockBase

getIndexData, getType

Methods inherited from class java.lang.Object

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

Field Detail

datasize

protected int datasize

data_offset

long data_offset

Offset into the file of the data part of the block

Constructor Detail

FileBlockPosition

protected FileBlockPosition(java.lang.String type,
                            com.google.protobuf.ByteString indexdata)

Method Detail

parseData

FileBlock parseData(byte[] buf)
             throws com.google.protobuf.InvalidProtocolBufferException

Parse out and decompress the data part of a fileblock helper function.

Throws:

com.google.protobuf.InvalidProtocolBufferException

getDatasize

public int getDatasize()

newInstance

static FileBlockPosition newInstance(FileBlockBase base,
                                     long offset,
                                     int length)

read

public FileBlock read(java.io.InputStream input)
               throws java.io.IOException

Throws:

java.io.IOException

serialize

public com.google.protobuf.ByteString serialize()

TODO: Convert this reference into a serialized representation that can be stored.

parseFrom

static FileBlockPosition parseFrom(com.google.protobuf.ByteString b)

TODO: Parse a serialized representation of this block reference