text: /*
   * 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.camel.component.bean;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.camel.CamelContext;
  import org.apache.camel.Exchange;
  import org.apache.camel.Expression;
  import org.apache.camel.Message;
  import org.apache.camel.TypeConverter;
  import org.apache.camel.spi.Registry;
  import org.apache.camel.support.builder.ExpressionBuilder;
  
  /**
   * Represents the strategy used to figure out how to map a message exchange to a POJO method invocation
   */
  public final class DefaultParameterMappingStrategy implements ParameterMappingStrategy {
  
      public static final DefaultParameterMappingStrategy INSTANCE = new DefaultParameterMappingStrategy();
  
      private static final Map<Class<?>, Expression> MAP = new HashMap<>(6);
  
      static {
          MAP.put(Exchange.class, ExpressionBuilder.exchangeExpression());
          MAP.put(Message.class, ExpressionBuilder.inMessageExpression());
          MAP.put(Exception.class, ExpressionBuilder.exchangeExceptionExpression());
          MAP.put(TypeConverter.class, ExpressionBuilder.typeConverterExpression());
          MAP.put(Registry.class, ExpressionBuilder.registryExpression());
          MAP.put(CamelContext.class, ExpressionBuilder.camelContextExpression());
      };
  
      private DefaultParameterMappingStrategy() {
      }
  
      @Override
      public Expression getDefaultParameterTypeExpression(Class<?> parameterType) {
          return MAP.get(parameterType);
      }
  
  }
  