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https://issues.apache.org/jira/browse/CAMEL-10845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900825#comment-16900825
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Claus Ibsen edited comment on CAMEL-10845 at 8/6/19 10:15 AM:
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I am adding suppliers so the DSL is a bit more modern with java 8 style.

For expression / predicate we should take a 2nd look as that would be cool. 
Okay the enanced DSL on ExpressionClause get java 8 support for function, 
supplier etc. So lets keep it for now.


was (Author: davsclaus):
I am adding suppliers so the DSL is a bit more modern with java 8 style.

For expression / predicate we should take a 2nd look as that would be cool.

> Java 8 DSL : add support for Suppliers
> --------------------------------------
>
>                 Key: CAMEL-10845
>                 URL: https://issues.apache.org/jira/browse/CAMEL-10845
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core, eip
>            Reporter: Luca Burgazzoli
>            Assignee: Claus Ibsen
>            Priority: Major
>             Fix For: 3.0.0
>
>
> One of the things that was missing in previous Java 8 DSL improvement rounds 
> was the possibility to use Suppliers to provides objects to the routes.
> As today:
> {code:java}
>     from("direct:start")
>         .idempotentConsumer()
>             .header("messageId")
>             .messageIdRepository(createRepo())
>         .to("mock:result");
> {code}
> With suppliers:
> {code:java}
>     from("direct:start")
>         .idempotentConsumer()
>             .header("messageId")
>             .messageIdRepository(this::createRepo)
>         .to("mock:result");
> {code}
> Adding that does not result in such a big improvement for the DSL but it adds 
> some overhead to the underlying definitions as we may need to add additional 
> variables to hold the suppliers and other stuffs to convert suppliers i.e. to 
> expression clause so we should have a look at this issue in Camel 3.0 (where 
> we may have the chance to do a deeper refactor and suppliers may play better).



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