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https://issues.apache.org/jira/browse/CAMEL-5252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15266266#comment-15266266
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Claus Ibsen commented on CAMEL-5252:
------------------------------------
Got this working with lazy eval, but this requires us to trigger the lazy eval
at certain times when the expression is evaluated. So the code changes are
needed in several places.
> Simple language - Improved OGNL invocation with simple expression as
> functions for parameters
> ---------------------------------------------------------------------------------------------
>
> Key: CAMEL-5252
> URL: https://issues.apache.org/jira/browse/CAMEL-5252
> Project: Camel
> Issue Type: Improvement
> Components: camel-core
> Affects Versions: 2.9.2
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: Future
>
>
> See nabble
> http://camel.465427.n5.nabble.com/Invoking-a-bean-returned-by-a-previous-bean-invocation-tp5676696.html
> The example with the nested animal parameter.
> We should see if we can better detect this use-case, and avoid the
> intermediate String conversion, when its a parameter type.
> {code}
> public void testBodyOgnlOnAnimalWithOgnlParams() throws Exception {
> exchange.getIn().setBody(new Animal("tiger", 13));
> exchange.getIn().setHeader("friend", new Animal("donkey", 4));
> assertExpression("${body.setFriend(${header.friend})}", null);
> }
> {code}
> Fails with org.apache.camel.NoTypeConversionAvailableException: No type
> converter available to convert from type: java.lang.String to the required
> type: org.apache.camel.language.simple.SimpleTest.Animal with value donkey
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