[jira] [Created] (CAMEL-6674) Add allowNull option to @Converter to allow type converters to return null as valid response for special use-cases

["Claus Ibsen (JIRA)" <ji...@apache.org>]

Claus Ibsen created CAMEL-6674:
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             Summary: Add allowNull option to @Converter to allow type converters to return null as valid response for special use-cases
                 Key: CAMEL-6674
                 URL: https://issues.apache.org/jira/browse/CAMEL-6674
             Project: Camel
          Issue Type: Improvement
          Components: camel-core
    Affects Versions: 2.11.1, 2.12.0
            Reporter: Claus Ibsen
            Assignee: Claus Ibsen
             Fix For: 2.11.2, 2.12.1


See nabble
http://camel.465427.n5.nabble.com/Xpath-parameter-binding-NodeList-vs-Node-tp5738067.html

This avoids the situation with the NodeList -> Node converter that may return null the 1st time, and then its regarded as a misses for conversion in future attempts.

Just be annotation the method from
@Converter

to:
@Converter(allowNull = true)

Should allow to fix this. As then the type converter registry knows that a null response is valid.



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