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package org.mule.enricher; |
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import org.mule.RequestContext; |
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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.MuleMessage; |
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import org.mule.api.expression.ExpressionManager; |
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import org.mule.api.processor.MessageProcessor; |
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import org.mule.processor.AbstractMessageProcessorOwner; |
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import org.mule.util.StringUtils; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.List; |
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|
22 | 0 | public class MessageEnricher extends AbstractMessageProcessorOwner implements MessageProcessor |
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{ |
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|
25 | 0 | private List<EnrichExpressionPair> enrichExpressionPairs = new ArrayList<EnrichExpressionPair>(); |
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private MessageProcessor enrichmentProcessor; |
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public MuleEvent process(MuleEvent event) throws MuleException |
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{ |
31 | 0 | ExpressionManager expressionManager = event.getMuleContext().getExpressionManager(); |
32 | 0 | MuleEvent enrichmentEvent = enrichmentProcessor.process(RequestContext.setEvent(event)); |
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|
34 | 0 | if (enrichmentEvent != null) |
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{ |
36 | 0 | for (EnrichExpressionPair pair : enrichExpressionPairs) |
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{ |
38 | 0 | enrich(event.getMessage(), enrichmentEvent.getMessage(), pair.getSource(), pair.getTarget(), |
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expressionManager); |
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} |
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} |
42 | 0 | return event; |
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} |
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protected void enrich(MuleMessage currentMessage, |
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MuleMessage enrichmentMessage, |
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String sourceExpressionArg, |
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String targetExpressionArg, |
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ExpressionManager expressionManager) |
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{ |
51 | 0 | if (StringUtils.isEmpty(sourceExpressionArg)) |
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{ |
53 | 0 | sourceExpressionArg = "#[payload]"; |
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} |
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|
56 | 0 | Object enrichmentObject = expressionManager.evaluate(sourceExpressionArg, enrichmentMessage); |
57 | 0 | if (enrichmentObject instanceof MuleMessage) |
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{ |
59 | 0 | enrichmentObject = ((MuleMessage) enrichmentObject).getPayload(); |
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} |
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|
62 | 0 | if (!StringUtils.isEmpty(targetExpressionArg)) |
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{ |
64 | 0 | expressionManager.enrich(targetExpressionArg, currentMessage, enrichmentObject); |
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} |
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else |
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{ |
68 | 0 | currentMessage.setPayload(enrichmentObject); |
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} |
70 | 0 | } |
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public void setEnrichmentMessageProcessor(MessageProcessor enrichmentProcessor) |
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{ |
74 | 0 | this.enrichmentProcessor = enrichmentProcessor; |
75 | 0 | } |
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public void setMessageProcessor(MessageProcessor enrichmentProcessor) |
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{ |
82 | 0 | this.enrichmentProcessor = enrichmentProcessor; |
83 | 0 | } |
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public void setEnrichExpressionPairs(List<EnrichExpressionPair> enrichExpressionPairs) |
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{ |
87 | 0 | this.enrichExpressionPairs = enrichExpressionPairs; |
88 | 0 | } |
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public void addEnrichExpressionPair(EnrichExpressionPair pair) |
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{ |
92 | 0 | this.enrichExpressionPairs.add(pair); |
93 | 0 | } |
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95 | 0 | public static class EnrichExpressionPair |
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{ |
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private String source; |
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private String target; |
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public EnrichExpressionPair() |
102 | 0 | { |
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104 | 0 | } |
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public EnrichExpressionPair(String target) |
107 | 0 | { |
108 | 0 | this.target = target; |
109 | 0 | } |
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public EnrichExpressionPair(String source, String target) |
112 | 0 | { |
113 | 0 | this.source = source; |
114 | 0 | this.target = target; |
115 | 0 | } |
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public String getSource() |
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{ |
119 | 0 | return source; |
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} |
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public void setSource(String source) |
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{ |
124 | 0 | this.source = source; |
125 | 0 | } |
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public String getTarget() |
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{ |
129 | 0 | return target; |
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} |
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public void setTarget(String target) |
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{ |
134 | 0 | this.target = target; |
135 | 0 | } |
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} |
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@Override |
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protected List<MessageProcessor> getOwnedMessageProcessors() |
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{ |
141 | 0 | return Collections.singletonList(enrichmentProcessor); |
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} |
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} |