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package org.mule.cache; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleException; |
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import org.mule.api.lifecycle.Initialisable; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.processor.InterceptingMessageProcessor; |
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import org.mule.api.processor.MessageProcessor; |
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import org.mule.api.routing.filter.Filter; |
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import org.mule.processor.AbstractMessageProcessorOwner; |
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import org.mule.processor.chain.DefaultMessageProcessorChainBuilder; |
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import org.mule.routing.filters.AcceptAllFilter; |
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import java.util.List; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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32 | 0 | public class CachingMessageProcessor extends AbstractMessageProcessorOwner |
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implements Initialisable, InterceptingMessageProcessor |
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{ |
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36 | 0 | protected Log logger = LogFactory.getLog(getClass()); |
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private List<MessageProcessor> messageProcessors; |
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private MessageProcessor cachedMessageProcessor; |
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private MessageProcessor next; |
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private CachingStrategy cachingStrategy; |
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private Filter filter; |
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@Override |
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public void initialise() throws InitialisationException |
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{ |
51 | 0 | super.initialise(); |
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|
53 | 0 | if (cachingStrategy == null) |
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{ |
55 | 0 | cachingStrategy = createDefaultCachingStrategy(); |
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} |
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58 | 0 | if (filter == null) |
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{ |
60 | 0 | filter = createDefaultCacheFilter(); |
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} |
62 | 0 | } |
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protected AcceptAllFilter createDefaultCacheFilter() |
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{ |
66 | 0 | return new AcceptAllFilter(); |
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} |
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protected CachingStrategy createDefaultCachingStrategy() |
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{ |
71 | 0 | return new ObjectStoreCachingStrategy(); |
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} |
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public MuleEvent process(MuleEvent event) throws MuleException |
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{ |
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MuleEvent responseFromCachedMessageProcessor; |
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78 | 0 | if (filter.accept(event.getMessage())) |
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{ |
80 | 0 | responseFromCachedMessageProcessor = cachingStrategy.process(event, cachedMessageProcessor); |
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} |
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else |
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{ |
84 | 0 | responseFromCachedMessageProcessor = cachedMessageProcessor.process(event); |
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} |
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87 | 0 | return processNext(responseFromCachedMessageProcessor); |
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} |
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protected MuleEvent processNext(MuleEvent event) throws MuleException |
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{ |
92 | 0 | if (next == null) |
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{ |
94 | 0 | return event; |
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} |
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else |
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{ |
98 | 0 | return next.process(event); |
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} |
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} |
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public void setMessageProcessors(List<MessageProcessor> messageProcessors) throws MuleException |
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{ |
104 | 0 | this.messageProcessors = messageProcessors; |
105 | 0 | this.cachedMessageProcessor = new DefaultMessageProcessorChainBuilder().chain(messageProcessors).build(); |
106 | 0 | } |
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@Override |
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protected List<MessageProcessor> getOwnedMessageProcessors() |
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{ |
111 | 0 | return messageProcessors; |
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} |
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public void setListener(MessageProcessor listener) |
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{ |
116 | 0 | next = listener; |
117 | 0 | } |
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public CachingStrategy getCachingStrategy() |
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{ |
121 | 0 | return cachingStrategy; |
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} |
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public void setCachingStrategy(CachingStrategy cachingStrategy) |
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{ |
126 | 0 | this.cachingStrategy = cachingStrategy; |
127 | 0 | } |
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public Filter getFilter() |
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{ |
131 | 0 | return filter; |
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} |
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public void setFilter(Filter filter) |
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{ |
136 | 0 | this.filter = filter; |
137 | 0 | } |
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} |