davsclaus opened a new pull request, #27297:
URL: https://github.com/apache/camel/pull/27297
## Description
The JsonPath page shows filtering a JSON array by a header with `resultType:
java.util.List`, a size check and `${body[0]}`. When the filter matches on a
unique key there is a shorter form: with a non-collection `resultType` such as
`java.util.Map`, one match is returned as the element and no match as `null`.
This adds that form (Java, XML, YAML tabs) next to the List one, plus a note:
- more than one match also returns `null`, so use it only when at most one
element can match
- `unpackArray` does not cover this: it unpacks a single-element list but
leaves an empty list as `[]`
The YAML and XML snippets were run with `camel run` against a three-item
`stock.json`: a known SKU returns the item marshalled to JSON, an unknown SKU
returns 404 with `unknown SKU <sku>`.
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