src/share/classes/com/sun/corba/se/spi/ior/IdentifiableContainerBase.java

Thu, 31 Aug 2017 18:10:36 +0800

author
aoqi
date
Thu, 31 Aug 2017 18:10:36 +0800
changeset 748
6845b95cba6b
parent 158
91006f157c46
parent 0
7ef37b2cdcad
permissions
-rw-r--r--

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 }

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