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https://issues.apache.org/jira/browse/CAMEL-5338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402578#comment-13402578
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Christian Müller commented on CAMEL-5338:
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Copy Constructor versus Cloning: http://www.artima.com/intv/bloch13.html
> Exchange.copy() should make a deep copy, if the referenced objects (body,
> headers, properties) implements java.lang.Cloneable
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-5338
> URL: https://issues.apache.org/jira/browse/CAMEL-5338
> Project: Camel
> Issue Type: Improvement
> Affects Versions: 2.9.2
> Reporter: Christian Müller
> Fix For: 3.0.0
>
>
> We run into an issue where an exchange with a custom pojo as payload was sent
> to an multicast and changed in two different sub-routes at the same time
> (connected by using the direct protocol). The reason is that the
> Exchange.copy() method "only" creates shallow copies of the body (it's the
> same for the exchange properties and message headers). I think it's a good
> improvement to check whether the object implements java.lang.Cloneable and in
> this case create a deep copy of the object.
> [1]
> https://svn.apache.org/repos/asf/camel/trunk/camel-core/src/main/java/org/apache/camel/impl/DefaultExchange.java
> [2]
> https://svn.apache.org/repos/asf/camel/trunk/camel-core/src/main/java/org/apache/camel/impl/MessageSupport.java
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