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}