[jira] [Resolved] (CAMEL-4453) Avoid reference from api to builder (ErrorHandlerBuilder) and clean up model in regard to error handler

["Christian Schneider (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-4453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Schneider resolved CAMEL-4453.
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    Resolution: Fixed

> Avoid reference from api to builder (ErrorHandlerBuilder) and clean up model in regard to error handler
> -------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-4453
>                 URL: https://issues.apache.org/jira/browse/CAMEL-4453
>             Project: Camel
>          Issue Type: Improvement
>    Affects Versions: 2.8.0
>            Reporter: Christian Schneider
>             Fix For: 2.9.0
>
>
> Currently we have some lees than optimal designs in camel:
> The api and spi reference ErrorHandlerbuilder which is a builder level interface. As the builder needs access to almost anything this creates a big cycle over all of camel.
> We also use the ErrorHandlerBuilder in many places where no build is necessary. In these cases rather a factory is needed.
> The last thing is that we allow to change the ErrorHandlerBuilder in ProcessDefintion. So it can be set everywhere though it really should only be set on the start of a RouteDefinition.
> So I propose to change several things:
> - Create an interface ErrorHandlerFactory that only has the create method and use it instead of ErrorHandlerBuilder where no builder is needed
> - Remove ErrorHandlerBuilder in ProcessDefintion and only have it in RouteDefintion
> The first part should be made compatible using deprecation so people will not be affected.
> The second part is incompatible but I doubt many people use the errorhandler outside the start of a Route. So I think we need to compatiblity measures.

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