content: /*
   * 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 com.alibaba.spring.util;
  
  import org.springframework.beans.factory.BeanFactory;
  import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
  import org.springframework.core.env.ConfigurableEnvironment;
  import org.springframework.core.env.Environment;
  import org.springframework.util.Assert;
  
  /**
   * The utilities class for wrapper interfaces
   *
   * @since 1.0.6
   */
  public abstract class WrapperUtils {
  
      /**
       * Unwrap {@link BeanFactory} to {@link ConfigurableListableBeanFactory}
       *
       * @param beanFactory {@link ConfigurableListableBeanFactory}
       * @return {@link ConfigurableListableBeanFactory}
       * @throws IllegalArgumentException If <code>beanFactory</code> argument is not an instance of {@link ConfigurableListableBeanFactory}
       */
      public static ConfigurableListableBeanFactory unwrap(BeanFactory beanFactory) throws IllegalArgumentException {
          Assert.isInstanceOf(ConfigurableListableBeanFactory.class, beanFactory,
                  "The 'beanFactory' argument is not an instance of ConfigurableListableBeanFactory, " +
                          "is it running in Spring container?");
          return ConfigurableListableBeanFactory.class.cast(beanFactory);
      }
  
  
      /**
       * Unwrap {@link Environment} to {@link ConfigurableEnvironment}
       *
       * @param environment {@link Environment}
       * @return {@link ConfigurableEnvironment}
       * @throws IllegalArgumentException If <code>environment</code> argument is not an instance of {@link ConfigurableEnvironment}
       */
      public static ConfigurableEnvironment unwrap(Environment environment) throws IllegalArgumentException {
          Assert.isInstanceOf(ConfigurableEnvironment.class, environment,
                  "The 'environment' argument is not a instance of ConfigurableEnvironment, " +
                          "is it running in Spring container?");
          return (ConfigurableEnvironment) environment;
      }
  }
  