org.treetank.filelistener.file.data

Class FileData

java.lang.Object

org.treetank.filelistener.file.data.FileData

All Implemented Interfaces:

IData

public class FileData
extends Object
implements IData

A sequence of Filenodes represents a full file. A Filnode has a content size of 512 bytes and has a reference to the following node if such a node exists. The header filenode is being referenced by the page layer in a hash map. It consists of a relative path.

Author:

andreas

Field Summary

Fields

Modifier and Type	Field and Description
static int	FILENODESIZE The size of the filenode

Constructor Summary

Constructors

Constructor and Description
FileData(long dataKey, byte[] content, boolean header, boolean eof) Creates a Filenode with given bytes

Method Summary

Methods

Modifier and Type	Method and Description
long	getDataKey() Gets unique IData key.
com.google.common.hash.Funnel<IData>	getFunnel() Getting a Funnel for computing guava-based hashes.
byte[]	getVal()
boolean	isEof() Check whether or not this filenode is the last in the sequence.
boolean	isHeader() Check whether or not this filenode is the first in the sequence.
void	serialize(DataOutput output) Serializing to given dataput

Methods inherited from class java.lang.Object

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

Field Detail

FILENODESIZE

public static final int FILENODESIZE

The size of the filenode

See Also:

Constant Field Values

Constructor Detail

FileData

public FileData(long dataKey,
        byte[] content,
        boolean header,
        boolean eof)

Creates a Filenode with given bytes

Parameters:

dataKey -

content - , as byte array

Method Detail

serialize

public void serialize(DataOutput output)
               throws TTIOException

Serializing to given dataput

Specified by:

serialize in interface IData

Parameters:

output - to serialize to

Throws:

TTIOException

getDataKey

public long getDataKey()

Description copied from interface: IData

Gets unique IData key. This key should be set over the IBucketWriteTrx.incrementDataKey for getting the correct offset within retrievals.

Specified by:

getDataKey in interface IData

Returns:

datakey

isHeader

public boolean isHeader()

Check whether or not this filenode is the first in the sequence.

Returns:

true if is a header element

isEof

public boolean isEof()

Check whether or not this filenode is the last in the sequence.

Returns:

true if this is the last element in the sequence

getVal

public byte[] getVal()

Returns:

value held by this node

getFunnel

public com.google.common.hash.Funnel<IData> getFunnel()

Getting a Funnel for computing guava-based hashes.

Specified by:

getFunnel in interface IData

Returns:

a Funnel for this IData