| /* |
| * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.script.util; |
| import java.util.*; |
| |
| /** |
| * Entry set implementation for Bindings implementations |
| * |
| * @author Mike Grogan |
| * @since 1.6 |
| */ |
| public class BindingsEntrySet extends AbstractSet<Map.Entry<String, Object>> { |
| |
| private BindingsBase base; |
| private String[] keys; |
| |
| public BindingsEntrySet(BindingsBase base) { |
| this.base = base; |
| keys = base.getNames(); |
| } |
| |
| public int size() { |
| return keys.length; |
| } |
| |
| public Iterator<Map.Entry<String, Object>> iterator() { |
| return new BindingsIterator(); |
| } |
| |
| public class BindingsEntry implements Map.Entry<String, Object> { |
| private String key; |
| public BindingsEntry(String key) { |
| this.key = key; |
| } |
| |
| public Object setValue(Object value) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public String getKey() { |
| return key; |
| } |
| |
| public Object getValue() { |
| return base.get(key); |
| } |
| |
| } |
| |
| public class BindingsIterator implements Iterator<Map.Entry<String, Object>> { |
| |
| private int current = 0; |
| private boolean stale = false; |
| |
| public boolean hasNext() { |
| return (current < keys.length); |
| } |
| |
| public BindingsEntry next() { |
| stale = false; |
| return new BindingsEntry(keys[current++]); |
| } |
| |
| public void remove() { |
| if (stale || current == 0) { |
| throw new IllegalStateException(); |
| } |
| |
| stale = true; |
| base.remove(keys[current - 1]); |
| } |
| |
| } |
| |
| } |