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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.config.parsers;
8   
9   import org.mule.api.annotations.meta.Evaluator;
10  import org.mule.api.annotations.param.Payload;
11  import org.mule.api.expression.ExpressionAnnotationParser;
12  import org.mule.expression.ExpressionConfig;
13  import org.mule.expression.transformers.ExpressionArgument;
14  
15  import java.lang.annotation.Annotation;
16  
17  /**
18   * Responsible for parsing the {@link org.mule.api.annotations.param.Payload} annotation.  This is an iBeans
19   * framework class and cannot be used in any other context.
20   */
21  public class PayloadAnnotationParser implements ExpressionAnnotationParser
22  {
23      public ExpressionArgument parse(Annotation annotation, Class<?> parameterType)
24      {
25          Evaluator evaluator = annotation.annotationType().getAnnotation(Evaluator.class);
26          if (evaluator != null)
27          {
28              return new ExpressionArgument(null, new ExpressionConfig(parameterType.getName(), evaluator.value(), null), false, parameterType);
29          }
30          else
31          {
32              throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
33          }
34      }
35  
36      public boolean supports(Annotation annotation)
37      {
38          return annotation instanceof Payload;
39      }
40  }