/*
 * $Id: PdfIndirectReference.java,v 1.22 2002/06/20 13:30:25 blowagie Exp $
 * $Name:  $
 *
 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
 *
 *
 * 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.
 *
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) 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.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

package com.lowagie.text.pdf;

/**
 * <CODE>PdfIndirectReference</CODE> contains a reference to a <CODE>PdfIndirectObject</CODE>.
 * <P>
 * 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 <I>indirect reference</I> is a reference
 * to an indirect object, and consists of the indirect object's object number, generation number
 * and the <B>R</B> keyword.<BR>
 * 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 <CODE>PdfIndirectReference</CODE>.
 *
 * @param		type			the type of the <CODE>PdfObject</CODE> that is referenced to
 * @param		number			the object number.
 * @param		generation		the generation number.
 */
    
    PdfIndirectReference(int type, int number, int generation) {
        super(0, new StringBuffer().append(number).append(" ").append(generation).append(" R").toString());
        this.number = number;
        this.generation = generation;
    }
    
/**
 * Constructs a <CODE>PdfIndirectReference</CODE>.
 *
 * @param		type			the type of the <CODE>PdfObject</CODE> 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;
    }
}