José Bustamante created CAMEL-18345:
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Summary: EMPTY_ELEMENT_AS_NULL disabled by default in
jackson-dataformat-xml
Key: CAMEL-18345
URL: https://issues.apache.org/jira/browse/CAMEL-18345
Project: Camel
Issue Type: Bug
Components: camel-jacksonxml
Affects Versions: 3.3.0
Reporter: José Bustamante
Jackson 2.12.x changed the default for the 'EMPTY_ELEMENT_AS_NULL' feature from
true to false (see
[here|[https://github.com/FasterXML/jackson-dataformat-xml/issues/411]]) and we
can enable back this property using XMLMapper:
{quote}xmlMapper.configure(FromXmlParser.Feature.EMPTY_ELEMENT_AS_NULL, true);
{quote}
However, there's no way to enable this behaviour in jaxonxml inside camel
routes. In the
[documentation|[https://camel.apache.org/components/3.14.x/dataformats/jacksonxml-dataformat.html#_enabling_or_disable_features_using_jackson],]
It's specified that we can enable or disable certain types of properties that
are inside SerializationFeature, DeserializationFeature and MapperFeature but
there's no way to enable EMPTY_ELEMENT_AS_NULL since is in another enum
(FromXmlParser). We've tried enabling the feature
ACCEPT_EMPTY_STRING_AS_NULL_OBJECT but that doesn't work either.
We've managed to implement a workaround by using <bean> instead of <jacksonxml>
in our camel routes (we use Camel XML DSL), but that's not efficient as we
would have to replace all <jacksonxml> references. So we need to have the
possibility to enable back EMPTY_ELEMENT_AS_NULL from <jacksonxml> in camel XML
DSL.
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