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

Class PdfObject

java.lang.Object

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

Direct Known Subclasses:

PdfArray, PdfDictionary, PdfIndirectObj, PdfPseudoObject, PdfSimpleObject, PdfStream

public abstract class PdfObject
extends Object

The abstract superclass for all representations of objects in PDF files. Objects may be created using the obj syntax, in which case they have an object and generation number, or they may be parts of other objects, in which case they don't. All subclasses should implement a constructor which has the object and generation numbers as its last two arguments, and one which has the same arguments except for omitting these two.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	_genNumber PDF generation number.
protected int	_objNumber PDF object number.

Constructor Summary

Constructors

Constructor and Description
PdfObject() Superclass constructor for which the object and generation number will be added separately or not at all.
PdfObject(int objNumber, int genNumber) Superclass constructor which should be called for all PdfObject instances that include an object and generation number.

Method Summary

Modifier and Type	Method and Description
int	getGenNumber() Returns the PDF generation number.
int	getObjNumber() Returns the PDF object number.
void	setGenNumber(int num) Sets the PDF generation number.
void	setObjNumber(int num) Sets the PDF object number.

Methods inherited from class java.lang.Object

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

Field Detail

_objNumber

protected int _objNumber

PDF object number.

_genNumber

protected int _genNumber

PDF generation number.

Constructor Detail

PdfObject

public PdfObject(int objNumber,
                 int genNumber)

Superclass constructor which should be called for all PdfObject instances that include an object and generation number.

Parameters:

objNumber - The PDF object number

genNumber - The PDF generation number

PdfObject

public PdfObject()

Superclass constructor for which the object and generation number will be added separately or not at all. Initializes the object and generation numbers to -1 to signify their absence.

Method Detail

getObjNumber

public int getObjNumber()

Returns the PDF object number. If the object wasn't given an object number, returns -1.

getGenNumber

public int getGenNumber()

Returns the PDF generation number. If the object wasn't given a generation number, returns -1.

setObjNumber

public void setObjNumber(int num)

Sets the PDF object number.

setGenNumber

public void setGenNumber(int num)

Sets the PDF generation number.