Exit from Apache Camel loop

Question

I want to exit from Camel Loop at some condition. I am using Camel 2.15

 .loop(simple("${exchangeProperty.loopCount}"))
   .to("bean:xxx?method=exitFromLoop")
 .end()

I tried changing CamelLoopIndex and CamelLoopSize in exitFromLoop method, but didn't worked for me.

Is there any alternative to this e.g using choice/when?

score 4 · Accepted Answer · answered Aug 09 '16 at 13:41

4

There is a loop while mode if you use Camel 2.17 onwards.

See the documentation: http://camel.apache.org/loop

Then the loop runs like a while loop until the predicate evaluates to false / null or zero.

As its a predicate it does not automatic decrement a counter, so its like a while loop in java.

answered Aug 09 '16 at 13:41

Claus Ibsen

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Great. Thanks Claus. i am using Fuse 6.2, it use Camel 2.15. Is there any alternative in Camel 2.15? – Honey Goyal Aug 09 '16 at 14:40
1

You can use dynamic router EIP instead - Or if you do not need to do any more routing after the loop you can mark the exchange to stop – Claus Ibsen Aug 09 '16 at 15:54

score 0 · Answer 2 · answered Jun 22 '17 at 10:29

Up to camel 2.16 (and in 2.17 as well) you can use a <camel:stop/> statement in a <camel:when> block inside the <camel:loop>, and set the loop counter to some arbitrary upper limit.

Alternatively your loop may contain a java processor that can conditionally stop the route with: exchange.setProperty(Exchange.ROUTE_STOP, Boolean.TRUE);

Exit from Apache Camel loop

2 Answers2