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From Jean-Baptiste Onofré (JIRA) <j...@apache.org>
Subject [jira] [Updated] (SM-1975) servicemix 3.3.2 camel-core 2.2.0 custom aggregation having problems
Date Mon, 02 Jul 2012 10:38:22 GMT

     [ https://issues.apache.org/jira/browse/SM-1975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Baptiste Onofré updated SM-1975:
-------------------------------------

    Fix Version/s:     (was: 3.4.1)
                   EOL-3
    
>  servicemix 3.3.2  camel-core 2.2.0 custom aggregation having problems
> ----------------------------------------------------------------------
>
>                 Key: SM-1975
>                 URL: https://issues.apache.org/jira/browse/SM-1975
>             Project: ServiceMix
>          Issue Type: Bug
>          Components: servicemix-camel
>    Affects Versions: 3.3.2
>         Environment: Windows XP
>            Reporter: Alex C Punnen
>            Assignee: Jean-Baptiste Onofré
>            Priority: Blocker
>             Fix For: EOL-3
>
>
> We recently updated from servicemix 3.3.1 to version 3.3.2. We are using servicemix-camel
component and making use of a custom aggregation for our functionality.  This was working
fine with camel 3.3.1.
> We found out that servicemix 3.3.2 now supports camel 2.2 . So we changed the namespace
 and also I had to change certain method signature. But now nothing happens on aggregation.
Digging further we realized that the body that is passed into the aggregator object is null.
Since we were using xpath to group messages based on the value of a field in the body of the
NMR,  the fact that the body is coming as null  could be the reason that nothing is happening
on aggregation.
> Here is the code snippet which was working in 1.6
> ----------- 
> public class MyAggregationStrategy implements AggregationStrategy { 
> public Exchange aggregate(Exchange oldExchange, Exchange newExchange) { 
> String oldBody = oldExchange.getIn().getBody(String.class); 
> String newBody = newIn.getBody(String.class); 
> System.out.println("---------------------------"); 
> System.out.println("New Body "+newBody); 
> System.out.println("Old Body "+oldBody); 
> System.out.println("---------------------------"); 
> -------------------------------------------------------------------------------------

> New Body null 
> Old Body null 
> --------------------------- 
> --------------------------- 
> New Body Out null 
> Old Body  Out null 
> --------------------------- 
> -------------------------------------
> Here is the route
> --------------------------------
> public class MyRouteBuilder extends RouteBuilder {
> 		
>     public void configure() {
>     
>      System.out.println("In MyRouteBuilder------------------");
>         	
>       	Namespaces ns = new Namespaces("p", "http://nsn.com/obs/mw/medfra/snmpbc")
>        	.add("xsd", "http://www.w3.org/2001/XMLSchema");
>     
>       	from("jbi:service:http://servicemix.apache.org/test/camel-receiver")
>        	.aggregate(new MyAggregationStrategy()) //camel 2
>     	//.aggregator(new MyAggregationStrategy()) //camel 1.6
>     	.xpath("string(/p:snmp-getResponse/p:NE/@ipaddr)",String.class, ns)
>     	//.completedPredicate(header("completed").isEqualTo("true")) //camel 1.6
> 	.completionPredicate(header("completed").isEqualTo("true")) //camel 2
> 	//.to("jbi:endpoint:http://servicemix.apache.org/test/file_sender_getbulk/endpoint");
 
> 	.to("log:tutorial");  //for test

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