edu.harvard.hul.ois.jhove.module.gzip

Class GzipEntryData

java.lang.Object

edu.harvard.hul.ois.jhove.module.gzip.GzipEntryData

public class GzipEntryData
extends Object

This class is a wrapper for the information available in a GZip entry. Since the GZip reader is not persistent its data must be moved to a simpler data class which can be persisted instead.

Author:

nicl

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	asciiFlag Ascii bit set in header.
protected String	comment Optional comment from header.
protected int	computedCrc16 CRC16 computed as verification to optional value found in header.
protected int	computedCrc32 CRC32 computed as verification to value found in trailing header.
protected long	computedISize ISIZE computed as verification to value found in trailing header.
protected long	csize Compressed size of entry data.
protected Date	date Date read from header.
protected CompressionType	extraFlags Compression type read from extra flags in header.
protected String	fileName Optional filename from header.
protected boolean	isNonCompliant Boolean indicating whether header is non compliant.
protected CompressionMethod	method Compression methods read from header.
protected long	offset Offset of entry in input stream.
protected OperatingSystem	os Operating System from header converted to a field.
protected Integer	readCrc16 Optional CRC16 read from header.
protected int	readCrc32 CRC32 read from trailing header.
protected long	readISize ISIZE read from trailing header.
protected long	size Uncompressed size of entry data.

Constructor Summary

Constructors

Constructor and Description
GzipEntryData() Constructor required by the persistence layer.
GzipEntryData(org.jwat.gzip.GzipEntry entry) Given a GZip entry, transfer the data to this object so it can be persisted.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

isNonCompliant

protected boolean isNonCompliant

Boolean indicating whether header is non compliant.

offset

protected long offset

Offset of entry in input stream.

method

protected CompressionMethod method

Compression methods read from header.

extraFlags

protected CompressionType extraFlags

Compression type read from extra flags in header.

fileName

protected String fileName

Optional filename from header.

os

protected OperatingSystem os

Operating System from header converted to a field.

comment

protected String comment

Optional comment from header.

asciiFlag

protected boolean asciiFlag

Ascii bit set in header.

readCrc16

protected Integer readCrc16

Optional CRC16 read from header.

computedCrc16

protected int computedCrc16

CRC16 computed as verification to optional value found in header.

date

protected Date date

Date read from header.

size

protected long size

Uncompressed size of entry data.

csize

protected long csize

Compressed size of entry data.

readISize

protected long readISize

ISIZE read from trailing header.

computedISize

protected long computedISize

ISIZE computed as verification to value found in trailing header.

readCrc32

protected int readCrc32

CRC32 read from trailing header.

computedCrc32

protected int computedCrc32

CRC32 computed as verification to value found in trailing header.

Constructor Detail

GzipEntryData

public GzipEntryData()

Constructor required by the persistence layer.

GzipEntryData

public GzipEntryData(org.jwat.gzip.GzipEntry entry)

Given a GZip entry, transfer the data to this object so it can be persisted.

Parameters:

entry - GZip entry data