01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * ArrayEnumeration.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report.util;
30:
31: import java.util.Enumeration;
32: import java.util.NoSuchElementException;
33:
34: /**
35: * An enumeration that iterates over an array.
36: *
37: * @author Thomas Morgner
38: * @deprecated no longer used.
39: */
40: public class ArrayEnumeration implements Enumeration {
41: /** The base datasource. */
42: private Object[] objectarray = null;
43: /** The counter holds the current position inside the array. */
44: private int counter = 0;
45:
46: /**
47: * Creates a new enumeration for the given array.
48: *
49: * @param objectarray the array over which to iterate
50: * @throws NullPointerException if the array is null.
51: */
52: public ArrayEnumeration(final Object[] objectarray) {
53: if (objectarray == null) {
54: throw new NullPointerException(
55: "The array must not be null.");
56: }
57:
58: this .objectarray = objectarray;
59: }
60:
61: /**
62: * Returns true if this enumeration has at least one more Element.
63: *
64: * @return true, if there are more elements, false otherwise.
65: */
66: public boolean hasMoreElements() {
67: return (counter < objectarray.length);
68: }
69:
70: /**
71: * Returns the next element in the Array.
72: *
73: * @return the next element in the array.
74: * @throws NoSuchElementException if no more elements exist.
75: */
76: public Object nextElement() {
77: if (counter >= objectarray.length) {
78: throw new NoSuchElementException();
79: }
80:
81: final Object retval = objectarray[counter];
82: counter += 1;
83: return retval;
84: }
85: }
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