edu.harvard.hul.ois.jhove.module.pdf

Class PdfStream

java.lang.Object

edu.harvard.hul.ois.jhove.module.pdf.PdfObject

edu.harvard.hul.ois.jhove.module.pdf.PdfStream

public class PdfStream
extends PdfObject

A representation of a PDF stream object. A PdfStream consists of a dictionary and a stream token. By default the content of the stream isn't loaded, but it can be loaded when necessary.

Field Summary

Fields inherited from class edu.harvard.hul.ois.jhove.module.pdf.PdfObject

_genNumber, _objNumber

Constructor Summary

Constructors

Constructor and Description
PdfStream(PdfDictionary dict, Stream stream) Creates a PdfStream.
PdfStream(PdfDictionary dict, Stream stream, int objNumber, int genNumber) Creates a PdfStream

Method Summary

Modifier and Type	Method and Description
PdfDictionary	getDict() Returns the stream's dictionary
String	getFileSpecification() If the stream is external, returns the file specification for it, otherwise returns null.
String	getFilterName() Return the name of the filter, if the DecodeParams dictionary is present and has a "Name" entry.
Filter[]	getFilters() Returns an array (possibly empty but not null) of the filters for this Stream.
Stream	getStream() Returns the stream's Stream portion
boolean	isImage() Returns true if this is an image stream.
boolean	isPdfaCompliant() Returns true if no PDF/A compliance problems have been found, false if problems have been found
protected List	makeFilterList()

Methods inherited from class edu.harvard.hul.ois.jhove.module.pdf.PdfObject

getGenNumber, getObjNumber, setGenNumber, setObjNumber

Methods inherited from class java.lang.Object

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

Constructor Detail

PdfStream

public PdfStream(PdfDictionary dict,
                 Stream stream,
                 int objNumber,
                 int genNumber)
          throws PdfException

Creates a PdfStream

Parameters:

dict - A dictionary describing the stream

stream - A Stream token

objNumber - The PDF object number

genNumber - The PDF generation number

Throws:

PdfException

PdfStream

public PdfStream(PdfDictionary dict,
                 Stream stream)
          throws PdfException

Creates a PdfStream.

Parameters:

dict - A dictionary describing the stream

stream - A Stream token

Throws:

PdfException

Method Detail

getDict

public PdfDictionary getDict()

Returns the stream's dictionary

getStream

public Stream getStream()

Returns the stream's Stream portion

getFileSpecification

public String getFileSpecification()

If the stream is external, returns the file specification for it, otherwise returns null.

isPdfaCompliant

public boolean isPdfaCompliant()

Returns true if no PDF/A compliance problems have been found, false if problems have been found

getFilters

public Filter[] getFilters()
                    throws PdfException

Returns an array (possibly empty but not null) of the filters for this Stream. The elements of the array are Filter objects.

Throws:

PdfException

getFilterName

public String getFilterName()

Return the name of the filter, if the DecodeParams dictionary is present and has a "Name" entry.

makeFilterList

protected List makeFilterList()
                       throws PdfException

Throws:

PdfException

isImage

public boolean isImage()

Returns true if this is an image stream.