Thu, 31 Aug 2017 18:10:36 +0800
merge
1 /*
2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
26 package com.sun.corba.se.spi.ior;
28 import java.util.List;
29 import java.util.ArrayList;
30 import java.util.Iterator;
32 import com.sun.corba.se.impl.ior.FreezableList ;
34 import com.sun.corba.se.spi.ior.TaggedComponent ;
35 import com.sun.corba.se.spi.ior.Identifiable ;
37 /** Convenience class for defining objects that contain lists of Identifiables.
38 * Mainly implements iteratorById. Also note that the constructor creates the
39 * list, which here is always an ArrayList, as this is much more efficient overall
40 * for short lists.
41 * @author Ken Cavanaugh
42 */
43 public class IdentifiableContainerBase extends FreezableList
44 {
45 /** Create this class with an empty list of identifiables.
46 * The current implementation uses an ArrayList.
47 */
48 public IdentifiableContainerBase()
49 {
50 super( new ArrayList() ) ;
51 }
53 /** Return an iterator which iterates over all contained Identifiables
54 * with type given by id.
55 */
56 public Iterator iteratorById( final int id)
57 {
58 return new Iterator() {
59 Iterator iter = IdentifiableContainerBase.this.iterator() ;
60 Object current = advance() ;
62 private Object advance()
63 {
64 while (iter.hasNext()) {
65 Identifiable ide = (Identifiable)(iter.next()) ;
66 if (ide.getId() == id)
67 return ide ;
68 }
70 return null ;
71 }
73 public boolean hasNext()
74 {
75 return current != null ;
76 }
78 public Object next()
79 {
80 Object result = current ;
81 current = advance() ;
82 return result ;
83 }
85 public void remove()
86 {
87 iter.remove() ;
88 }
89 } ;
90 }
91 }