Raymond created CAMEL-22920:
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Summary: 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
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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