Claus Ibsen created CAMEL-25326:
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Summary: camel-datasonnet - cml.variable()/cml.header() cannot
read a JSON or XML string as structured data
Key: CAMEL-25326
URL: https://issues.apache.org/jira/browse/CAMEL-25326
Project: Camel
Issue Type: Improvement
Reporter: Claus Ibsen
{{cml.variable()}}, {{cml.header()}} and {{cml.exchangeProperty()}} read the
value as a Java object ({{CML.valFrom}} uses {{application/x-java-object}}
unless the value is already a Document). A variable holding JSON as a string,
which is the usual case after an enrich or a pollEnrich that stores its result
in a variable, therefore stays a string:
{code}
cml.variable('other').name // fails: attempted to index a
string with string name
std.parseJson(cml.variable('other')).name // works
{code}
For XML there is no equally simple way. This makes mappings that join the body
with a second source awkward, and they are a common data-mapping case.
DataWeave's {{read()}} is also translated to {{std.parseJson}}, which only
works for JSON.
Proposal: an optional media type argument, e.g. {{cml.variable('other',
'application/json')}} / {{cml.header('x', 'application/xml')}}, that reads the
value with the matching DataSonnet format. Possibly also use a Content-Type
stored with the value when there is one. Document it in the datasonnet-language
page, with an enrich-and-join example.
_Claude Code on behalf of davsclaus_
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