| /* |
| * 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 javax.script.Bindings; |
| import java.util.Map; |
| import java.util.AbstractMap; |
| |
| /** |
| * Abstract super class for Bindings implementations |
| * |
| * @author Mike Grogan |
| * @since 1.6 |
| */ |
| public abstract class BindingsBase extends AbstractMap<String, Object> |
| implements Bindings { |
| |
| //AbstractMap methods |
| public Object get(Object name) { |
| checkKey(name); |
| return getImpl((String)name); |
| } |
| |
| public Object remove(Object key) { |
| checkKey(key); |
| return removeImpl((String)key); |
| } |
| |
| public Object put(String key, Object value) { |
| checkKey(key); |
| return putImpl(key, value); |
| } |
| |
| public void putAll(Map<? extends String, ? extends Object> toMerge) { |
| for (Map.Entry<? extends String, ? extends Object> entry : toMerge.entrySet()) { |
| String key = entry.getKey(); |
| checkKey(key); |
| putImpl(entry.getKey(), entry.getValue()); |
| } |
| } |
| |
| //BindingsBase methods |
| public abstract Object putImpl(String name, Object value); |
| public abstract Object getImpl(String name); |
| public abstract Object removeImpl(String name); |
| public abstract String[] getNames(); |
| |
| protected void checkKey(Object key) { |
| if (key == null) { |
| throw new NullPointerException("key can not be null"); |
| } |
| if (!(key instanceof String)) { |
| throw new ClassCastException("key should be String"); |
| } |
| if (key.equals("")) { |
| throw new IllegalArgumentException("key can not be empty"); |
| } |
| } |
| } |