1 /**
2 * Redistribution and use of this software and associated documentation ("Software"), with or
3 * without modification, are permitted provided that the following conditions are met:
4 *
5 * 1. Redistributions of source code must retain copyright statements and notices. Redistributions
6 * must also contain a copy of this document.
7 *
8 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
9 * conditions and the following disclaimer in the documentation and/or other materials provided with
10 * the distribution.
11 *
12 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
13 * without prior written permission of Intalio, Inc. For written permission, please contact
14 * info@exolab.org.
15 *
16 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
17 * their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
18 * Intalio, Inc.
19 *
20 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
21 *
22 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
24 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTALIO, INC. OR ITS
25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
29 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Copyright 1999 (C) Intalio, Inc. All Rights Reserved.
32 *
33 * $Id$
34 */
35
36 package org.exolab.castor.xml.schema;
37
38 import java.util.Enumeration;
39
40 /**
41 * A list for maintaining facets
42 *
43 * @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
44 * @version $Revision$ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $
45 **/
46 class FacetListEnumerator implements Enumeration<Facet> {
47
48 private int currentIdx = 0;
49 private FacetList facets = null;
50 private FacetListEnumerator inherited = null;
51 private String mask = null;
52
53 /**
54 * Creates a new FacetList for the given FacetList
55 **/
56 FacetListEnumerator(FacetList facets) {
57 this.facets = facets;
58 } // -- FacetListEnumerator
59
60 /**
61 * Creates a new FacetList enumerator
62 **/
63 FacetListEnumerator(FacetList facets, FacetListEnumerator inheritedFacets) {
64 this.facets = facets;
65 inherited = inheritedFacets;
66
67 } // -- FacetListEnumerator
68
69 /**
70 * Sets the mask for this enumerator. The mask is the name of the facets to enumerate.
71 *
72 * @param name the name of the facets to enumerate
73 **/
74 void setMask(String name) {
75 this.mask = name;
76 if (inherited != null)
77 inherited.setMask(name);
78 } // -- setMask
79
80 // -------------------------------------------/
81 // - implementation of java.util.Enumeration -/
82 // -------------------------------------------/
83
84 public boolean hasMoreElements() {
85
86 if (inherited != null) {
87 if (inherited.hasMoreElements())
88 return true;
89 }
90
91 if (facets == null)
92 return false;
93 if (mask == null)
94 return (currentIdx < facets.size());
95
96 for (; currentIdx < facets.size(); currentIdx++) {
97 Facet facet = facets.get(currentIdx);
98 if (mask.equals(facet.getName()))
99 return true;
100 }
101 return false;
102 } // -- hasMoreElements
103
104 public Facet nextElement() {
105 if (inherited != null) {
106 if (inherited.hasMoreElements())
107 return inherited.nextElement();
108 }
109 if (facets == null)
110 return null;
111
112 if (mask == null) {
113 if (currentIdx < facets.size())
114 return facets.get(currentIdx++);
115 } else {
116 for (; currentIdx < facets.size(); currentIdx++) {
117 Facet facet = facets.get(currentIdx);
118 if (mask.equals(facet.getName())) {
119 ++currentIdx;
120 return facet;
121 }
122 }
123 }
124 return null;
125 } // -- nextElement
126
127 } // -- FacetListEnumerator