[CAMEL-17844] camel-bean: @Handler annotation doesn't work with FunctionalInterfaces

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.4.1
• Fix Version/s: 3.17.0
• Component/s: camel-bean
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Bjørn Ole Myrold
• Created: 23/Mar/22 11:09
• Updated: 25/Mar/22 09:05
• Resolved: 25/Mar/22 09:05

Description

Version 3.4.1 introduced fixes in regards to how BeanInfo gets built, this seems to break beans which are @FunctionalInterfaces.
I believe it was introduced with https://issues.apache.org/jira/browse/CAMEL-15278

The fix created in the above case only handles super classes, and does not look at interfaces. A lambda cast to a FunctionalInterface will only provide Object as super class, and BeanInfo will then not find any methods marked with @Handler in the interface.

 

This works in 3.4.0, but not in 3.4.1 or higher

public class TestRoute extends RouteBuilder {


    @Override public void configure() throws Exception {
        from("direct:testRoute").id("TestRoute")
            .bean((Formatter) a -> String.format("%s %s", a.getName(), a.getOtherName()))
            .to("direct:testEndpoint");
    }

    @FunctionalInterface
    public interface Formatter {
        @Handler String test(@Body RandomPojo t);
    }
} 

Issue Links

• links to: GitHub Pull Request #7261