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https://issues.apache.org/activemq/browse/CAMEL-1078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47273#action_47273
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Hadrian Zbarcea commented on CAMEL-1078:
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Exchange specialized classes to be removed:
BeanExchange
CxfExchange
DummyExchange
FileExchange
HttpExchange
IrcExchange
JhcExchange
JmxExchange
JMXExchange
MailExchange
MinaExchange
MyExchange
QuarzExchange
RemoteFileExchange
SpringIntegrationExchange
XmppExchange



> Do not copy Exchanges at each step to improve performance
> ---------------------------------------------------------
>
>                 Key: CAMEL-1078
>                 URL: https://issues.apache.org/activemq/browse/CAMEL-1078
>             Project: Apache Camel
>          Issue Type: Improvement
>          Components: camel-core
>    Affects Versions: 1.5.0
>            Reporter: Hadrian Zbarcea
>            Assignee: Hadrian Zbarcea
>            Priority: Critical
>             Fix For: 2.0.0
>
>
> The code in DefaultEndpoint.createExchange(Exchange exchange), calls on 
> getExchangeType() to figure out if a new copy of Exchange needs be created.  
> The code relies though on the generic argument of the Endpoint type to figure 
> out the actual Exchange type.  With the generics removed part of CAMEL-872, 
> getExchangeType() always returns null, forcing a copy every time.
> There is no real need to extend Exchange, so the proposal for this to make 
> the Exchange final and move the component specific bits, if any,  in the 
> Message.

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