| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.jexl3; |
| |
| import java.math.MathContext; |
| import java.nio.charset.Charset; |
| |
| /** |
| * A readonly context wrapper. |
| * @since 3.0 |
| */ |
| public final class ReadonlyContext implements JexlContext, JexlEngine.Options { |
| /** The wrapped context. */ |
| private final JexlContext wrapped; |
| /** The wrapped engine options. */ |
| private final JexlEngine.Options options; |
| |
| /** |
| * Creates a new readonly context. |
| * @param context the wrapped context |
| * @param eopts the engine evaluation options |
| */ |
| public ReadonlyContext(JexlContext context, JexlEngine.Options eopts) { |
| wrapped = context; |
| options = eopts; |
| } |
| |
| @Override |
| public Object get(String name) { |
| return wrapped.get(name); |
| } |
| |
| /** |
| * Will throw an UnsupportedOperationException when called; the JexlEngine deals with it appropriately. |
| * @param name the unused variable name |
| * @param value the unused variable value |
| */ |
| @Override |
| public void set(String name, Object value) { |
| throw new UnsupportedOperationException("Not supported."); |
| } |
| |
| @Override |
| public boolean has(String name) { |
| return wrapped.has(name); |
| } |
| |
| @Override |
| public Boolean isSilent() { |
| return options == null? null : options.isSilent(); |
| } |
| |
| @Override |
| public Boolean isStrict() { |
| return options == null? null : options.isStrict(); |
| } |
| |
| @Override |
| public Boolean isCancellable() { |
| return options == null? null : options.isCancellable(); |
| } |
| |
| @Override |
| public Boolean isStrictArithmetic() { |
| return options == null? null : options.isStrict(); |
| } |
| |
| @Override |
| public MathContext getArithmeticMathContext() { |
| return options == null? null : options.getArithmeticMathContext(); |
| } |
| |
| @Override |
| public int getArithmeticMathScale() { |
| return options == null? -1 : options.getArithmeticMathScale(); |
| } |
| |
| @Override |
| public Charset getCharset() { |
| return options == null? Charset.defaultCharset() : options.getCharset(); |
| } |
| } |