View Javadoc

1   /*
2    * $Id: MessageProcessorFilterPairFactoryBean.java 20480 2010-12-07 03:59:28Z dfeist $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.config.spring.factories;
12  
13  import org.mule.api.MuleContext;
14  import org.mule.api.context.MuleContextAware;
15  import org.mule.api.processor.MessageProcessor;
16  import org.mule.api.processor.MessageProcessorBuilder;
17  import org.mule.api.processor.MessageProcessorChainBuilder;
18  import org.mule.api.routing.filter.Filter;
19  import org.mule.processor.chain.DefaultMessageProcessorChainBuilder;
20  import org.mule.routing.MessageProcessorFilterPair;
21  import org.mule.routing.filters.AcceptAllFilter;
22  import org.mule.routing.filters.ExpressionFilter;
23  
24  import java.util.List;
25  
26  import org.springframework.beans.factory.FactoryBean;
27  
28  public class MessageProcessorFilterPairFactoryBean implements FactoryBean, MuleContextAware
29  {
30      private List<MessageProcessor> messageProcessors;
31      private Filter filter = new ExpressionFilter();
32  
33      public void setFilter(Filter filter)
34      {
35          this.filter = filter;
36      }
37  
38      public void setMessageProcessors(List<MessageProcessor> messageProcessors)
39      {
40          this.messageProcessors = messageProcessors;
41      }
42  
43      public void setExpression(String expression)
44      {
45          ((ExpressionFilter) filter).setExpression(expression);
46      }
47  
48      public void setEvaluator(String evaluator)
49      {
50          ((ExpressionFilter) filter).setEvaluator(evaluator);
51      }
52  
53      public void setCustomEvaluator(String customEvaluator)
54      {
55          ((ExpressionFilter) filter).setCustomEvaluator(customEvaluator);
56      }
57  
58      public Object getObject() throws Exception
59      {
60          MessageProcessorChainBuilder builder = new DefaultMessageProcessorChainBuilder();
61          for (Object processor : messageProcessors)
62          {
63              if (processor instanceof MessageProcessor)
64              {
65                  builder.chain((MessageProcessor) processor);
66              }
67              else if (processor instanceof MessageProcessorBuilder)
68              {
69                  builder.chain((MessageProcessorBuilder) processor);
70              }
71              else
72              {
73                  throw new IllegalArgumentException(
74                      "MessageProcessorBuilder should only have MessageProcessor's or MessageProcessorBuilder's configured");
75              }
76          }
77          return filter == null
78                               ? new MessageProcessorFilterPair(builder.build(), AcceptAllFilter.INSTANCE)
79                               : new MessageProcessorFilterPair(builder.build(), filter);
80      }
81  
82      public Class<?> getObjectType()
83      {
84          return MessageProcessorFilterPair.class;
85      }
86  
87      public boolean isSingleton()
88      {
89          return true;
90      }
91  
92      public void setMuleContext(MuleContext context)
93      {
94          if (filter != null && filter instanceof MuleContextAware)
95          {
96              ((MuleContextAware) filter).setMuleContext(context);
97          }
98      }
99  
100 }