com.lowagie.text.pdf.PdfIndirectReference Maven / Gradle / Ivy
/*
* $Id: PdfIndirectReference.java 3912 2009-04-26 08:38:15Z blowagie $
*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* https://github.com/LibrePDF/OpenPDF
*/
package com.lowagie.text.pdf;
/**
* PdfIndirectReference contains a reference to a PdfIndirectObject.
*
* Any object used as an element of an array or as a value in a dictionary may be specified
* by either a direct object of an indirect reference. An indirect reference is a reference
* to an indirect object, and consists of the indirect object's object number, generation number
* and the R keyword.
* This object is described in the 'Portable Document Format Reference Manual version 1.3'
* section 4.11 (page 54).
*
* @see PdfObject
* @see PdfIndirectObject
*/
public class PdfIndirectReference extends PdfObject {
// membervariables
/** the object number */
protected int number;
/** the generation number */
protected int generation = 0;
// constructors
protected PdfIndirectReference() {
super(0);
}
/**
* Constructs a PdfIndirectReference.
*
* @param type the type of the PdfObject that is referenced to
* @param number the object number.
* @param generation the generation number.
*/
PdfIndirectReference(int type, int number, int generation) {
super(0, number + " " + generation + " R");
this.number = number;
this.generation = generation;
}
/**
* Constructs a PdfIndirectReference.
*
* @param type the type of the PdfObject that is referenced to
* @param number the object number.
*/
PdfIndirectReference(int type, int number) {
this(type, number, 0);
}
// methods
/**
* Returns the number of the object.
*
* @return a number.
*/
public int getNumber() {
return number;
}
/**
* Returns the generation of the object.
*
* @return a number.
*/
public int getGeneration() {
return generation;
}
public String toString() {
return new StringBuffer().append(number).append(" ").append(generation).append(" R").toString();
}
}