1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.jexl3;
18
19 import org.apache.commons.jexl3.annotations.NoJexl;
20
21 /**
22 * A readonly context wrapper.
23 * @since 3.0
24 */
25 public final class ReadonlyContext implements JexlContext, JexlContext.OptionsHandle {
26
27 /** The wrapped context. */
28 private final JexlContext wrapped;
29
30 /** The wrapped engine options. */
31 private final JexlOptions options;
32
33 /**
34 * Creates a new readonly context.
35 * @param context the wrapped context
36 * @param eopts the engine evaluation options
37 */
38 public ReadonlyContext(final JexlContext context, final JexlOptions eopts) {
39 wrapped = context;
40 options = eopts;
41 }
42
43 @Override
44 @NoJexl
45 public Object get(final String name) {
46 return wrapped.get(name);
47 }
48
49 @Override
50 @NoJexl
51 public JexlOptions getEngineOptions() {
52 return options;
53 }
54
55 @Override
56 @NoJexl
57 public boolean has(final String name) {
58 return wrapped.has(name);
59 }
60
61 /**
62 * Will throw an UnsupportedOperationException when called; the JexlEngine deals with it appropriately.
63 * @param name the unused variable name
64 * @param value the unused variable value
65 */
66 @Override
67 @NoJexl
68 public void set(final String name, final Object value) {
69 throw new UnsupportedOperationException("Not supported.");
70 }
71 }