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https://issues.apache.org/jira/browse/CAMEL-22920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18056251#comment-18056251
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Raymond commented on CAMEL-22920:
---------------------------------
I run it again and
{code:java}
from:
uri: "direct:start"
steps:
- split:
language:
language: "simple"
expression: "{{myExpression}}"
steps:
- to: "log:test?showBody=true" {code}
I throught that
{code:java}
{{myExpression}}{code}
Contained:
{code:java}
${body.split(',')}{code}
However it contained:
{code:java}
${header.someHeader} {code}
And someHeader container ${body.split(',')}. This lead to a double evaluation,
which doesn't seem possible.
I think EIP
([https://camel.apache.org/components/next/languages/simple-language.html#_eip_examples)]
only allow single evaluation:
{code:java}
<from uri="seda:orders">
<filter>
<simple>${header.foo}</simple>
<to uri="mock:fooOrders"/>
</filter>
</from>{code}
Maybe in 4.18.0 with nesting this is possible, or do it something like (xpath):
{code:java}
${simple(header.someHeader)} {code}
So not really an issue, but just not possible (yet)
> Kamelet property is not resolved in a split EIP
> -----------------------------------------------
>
> Key: CAMEL-22920
> URL: https://issues.apache.org/jira/browse/CAMEL-22920
> Project: Camel
> Issue Type: Bug
> Components: camel-core, camel-kamelet
> Affects Versions: 4.17.0
> Reporter: Raymond
> Priority: Minor
>
> In a Kamelet, I have the following route:
> {code:java}
> from:
> uri: "direct:start"
> steps:
> - split:
> language:
> language: "simple"
> expression: "${body.split(',')}"
> steps:
> - to: "log:test?showBody=true" {code}
> Sending the following message:
> {code:java}
> a,b,c {code}
> Gives the expected output:
>
> {code:java}
> 2026-01-28T14:56:18.155+01:00 INFO 14240 --- [gateway] [tp801843081-712]
> test : Exchange[ExchangePattern: InOut,
> BodyType: String, Body: a]
> 2026-01-28T14:56:18.161+01:00 INFO 14240 --- [gateway] [tp801843081-712]
> test : Exchange[ExchangePattern: InOut,
> BodyType: String, Body: b]
> 2026-01-28T14:56:18.165+01:00 INFO 14240 --- [gateway] [tp801843081-712]
> test : Exchange[ExchangePattern: InOut,
> BodyType: String, Body: c] {code}
> However, when I replace the expression with a Kamelet property \{{expression}}
> {code:java}
> from:
> uri: "direct:start"
> steps:
> - split:
> language:
> language: "simple"
> expression: "{{myExpression}}"
> steps:
> - to: "log:test?showBody=true" {code}
> And the myExpression parameter value is: ${body.split(',')}
> Sending the same message, I get the following output:
> {code:java}
> 2026-01-28T14:46:26.461+01:00 INFO 46744 --- [gateway] [p1699750684-659]
> test : Exchange[ExchangePattern: InOut,
> BodyType: String, Body: ${body.split(',')}]{code}
> In this case, it seems that the expression is treated like a constant, and
> the expression is set as the body.
>
>
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