001/*
002 * Copyright 2002-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.expression.spel.support;
018
019import org.springframework.expression.EvaluationException;
020import org.springframework.expression.Operation;
021import org.springframework.expression.OperatorOverloader;
022import org.springframework.lang.Nullable;
023
024/**
025 * Standard implementation of {@link OperatorOverloader}.
026 *
027 * @author Juergen Hoeller
028 * @since 3.0
029 */
030public class StandardOperatorOverloader implements OperatorOverloader {
031
032        @Override
033        public boolean overridesOperation(Operation operation, @Nullable Object leftOperand, @Nullable Object rightOperand)
034                        throws EvaluationException {
035
036                return false;
037        }
038
039        @Override
040        public Object operate(Operation operation, @Nullable Object leftOperand, @Nullable Object rightOperand)
041                        throws EvaluationException {
042
043                throw new EvaluationException("No operation overloaded by default");
044        }
045
046}