| /* |
| * 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.*; |
| import javax.script.Bindings; |
| |
| /* |
| * Abstract super class for Bindings implementations. Handles |
| * global and local scopes. |
| * |
| * @author Mike Grogan |
| * @since 1.6 |
| */ |
| public abstract class BindingsImpl extends BindingsBase { |
| |
| //get method delegates to global if key is not defined in |
| //base class or local scope |
| protected Bindings global = null; |
| |
| //get delegates to local scope |
| protected Bindings local = null; |
| |
| public void setGlobal(Bindings n) { |
| global = n; |
| } |
| |
| public void setLocal(Bindings n) { |
| local = n; |
| } |
| |
| public Set<Map.Entry<String, Object>> entrySet() { |
| return new BindingsEntrySet(this); |
| } |
| |
| public Object get(Object key) { |
| checkKey(key); |
| |
| Object ret = null; |
| if ((local != null) && (null != (ret = local.get(key)))) { |
| return ret; |
| } |
| |
| ret = getImpl((String)key); |
| |
| if (ret != null) { |
| return ret; |
| } else if (global != null) { |
| return global.get(key); |
| } else { |
| return null; |
| } |
| } |
| |
| public Object remove(Object key) { |
| checkKey(key); |
| Object ret = get(key); |
| if (ret != null) { |
| removeImpl((String)key); |
| } |
| return ret; |
| } |
| } |