| /* |
| * Copyright (c) 2005, 2006, 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 javax.script; |
| import java.util.Map; |
| |
| /** |
| * A mapping of key/value pairs, all of whose keys are |
| * <code>Strings</code>. |
| * |
| * @author Mike Grogan |
| * @since 1.6 |
| */ |
| public interface Bindings extends Map<String, Object> { |
| /** |
| * Set a named value. |
| * |
| * @param name The name associated with the value. |
| * @param value The value associated with the name. |
| * |
| * @return The value previously associated with the given name. |
| * Returns null if no value was previously associated with the name. |
| * |
| * @throws NullPointerException if the name is null. |
| * @throws IllegalArgumentException if the name is empty String. |
| */ |
| public Object put(String name, Object value); |
| |
| /** |
| * Adds all the mappings in a given <code>Map</code> to this <code>Bindings</code>. |
| * @param toMerge The <code>Map</code> to merge with this one. |
| * |
| * @throws NullPointerException |
| * if toMerge map is null or if some key in the map is null. |
| * @throws IllegalArgumentException |
| * if some key in the map is an empty String. |
| */ |
| public void putAll(Map<? extends String, ? extends Object> toMerge); |
| |
| /** |
| * Returns <tt>true</tt> if this map contains a mapping for the specified |
| * key. More formally, returns <tt>true</tt> if and only if |
| * this map contains a mapping for a key <tt>k</tt> such that |
| * <tt>(key==null ? k==null : key.equals(k))</tt>. (There can be |
| * at most one such mapping.) |
| * |
| * @param key key whose presence in this map is to be tested. |
| * @return <tt>true</tt> if this map contains a mapping for the specified |
| * key. |
| * |
| * @throws NullPointerException if key is null |
| * @throws ClassCastException if key is not String |
| * @throws IllegalArgumentException if key is empty String |
| */ |
| public boolean containsKey(Object key); |
| |
| /** |
| * Returns the value to which this map maps the specified key. Returns |
| * <tt>null</tt> if the map contains no mapping for this key. A return |
| * value of <tt>null</tt> does not <i>necessarily</i> indicate that the |
| * map contains no mapping for the key; it's also possible that the map |
| * explicitly maps the key to <tt>null</tt>. The <tt>containsKey</tt> |
| * operation may be used to distinguish these two cases. |
| * |
| * <p>More formally, if this map contains a mapping from a key |
| * <tt>k</tt> to a value <tt>v</tt> such that <tt>(key==null ? k==null : |
| * key.equals(k))</tt>, then this method returns <tt>v</tt>; otherwise |
| * it returns <tt>null</tt>. (There can be at most one such mapping.) |
| * |
| * @param key key whose associated value is to be returned. |
| * @return the value to which this map maps the specified key, or |
| * <tt>null</tt> if the map contains no mapping for this key. |
| * |
| * @throws NullPointerException if key is null |
| * @throws ClassCastException if key is not String |
| * @throws IllegalArgumentException if key is empty String |
| */ |
| public Object get(Object key); |
| |
| /** |
| * Removes the mapping for this key from this map if it is present |
| * (optional operation). More formally, if this map contains a mapping |
| * from key <tt>k</tt> to value <tt>v</tt> such that |
| * <code>(key==null ? k==null : key.equals(k))</code>, that mapping |
| * is removed. (The map can contain at most one such mapping.) |
| * |
| * <p>Returns the value to which the map previously associated the key, or |
| * <tt>null</tt> if the map contained no mapping for this key. (A |
| * <tt>null</tt> return can also indicate that the map previously |
| * associated <tt>null</tt> with the specified key if the implementation |
| * supports <tt>null</tt> values.) The map will not contain a mapping for |
| * the specified key once the call returns. |
| * |
| * @param key key whose mapping is to be removed from the map. |
| * @return previous value associated with specified key, or <tt>null</tt> |
| * if there was no mapping for key. |
| * |
| * @throws NullPointerException if key is null |
| * @throws ClassCastException if key is not String |
| * @throws IllegalArgumentException if key is empty String |
| */ |
| public Object remove(Object key); |
| } |