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https://issues.apache.org/jira/browse/CAMEL-15455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17183376#comment-17183376
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Claus Ibsen commented on CAMEL-15455:
-------------------------------------
So this is more about toD being dynamic and you are using simple expressions
for those parameters. A regular to would not accept ${header.xxx} in the size
parameter. And therefore we may not have noticed this before.
> EndpointDSL breaks expressions in query parameters
> --------------------------------------------------
>
> Key: CAMEL-15455
> URL: https://issues.apache.org/jira/browse/CAMEL-15455
> Project: Camel
> Issue Type: Bug
> Components: camel-endpointdsl
> Affects Versions: 3.4.3
> Reporter: Vladimir Dobos
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: 3.5.0, 3.4.4
>
>
> Expressions in parameters are destroyed by url-encoding during url creation
> in AbstractEndpointBuilder (using little non-sensical example to make
> reproduction setup easier).
> For example:
> {code:java}
> .toD(seda("someName").size("${header.size}")){code}
> will be translated by AbstractEndpointBuilder#computeUri (which uses
> URISupport#createQueryString) to
> _seda://someName?size=%24%7Bheader.size%7D_
> This will, of course, throw exception on endpoint creation.
> For some reason, thrown exception is url-decoded, so parameter names will
> look OK, even when they are broken (this makes the error more difficult to
> spot)
> {code:java}
> ...
> java.lang.String to the required type: int with value ${header.size} due to
> org.apache.camel.TypeConversionException: Error during type conversion from
> type: java.lang.String to the required type: java.lang.Integer with value
> ${header.size} due to java.lang.NumberFormatException: For input string:
> "${header.size}"
> ...
> {code}
> Enclosing expressions in RAW(..), fixes the issue, it is however quite
> suboptimal.
> Following workaround will work:
> {code:java}
> .toD(seda("someName").size("RAW(${header.size})")){code}
>
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