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https://issues.apache.org/jira/browse/CAMEL-14163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16970561#comment-16970561
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Zoran Regvart commented on CAMEL-14163:
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Actually I found out that with a small tweak to the way query parameter values
are passed, that is without forcing them to convert to Strings, the support in
{{URISupport::createQueryString}} generates the correct URI. So no need for any
special indicator for this case.
> Support for multiple request query parameters in Rest component
> ---------------------------------------------------------------
>
> Key: CAMEL-14163
> URL: https://issues.apache.org/jira/browse/CAMEL-14163
> Project: Camel
> Issue Type: Improvement
> Components: rest
> Affects Versions: 2.18.0
> Reporter: Zoran Regvart
> Assignee: Zoran Regvart
> Priority: Major
>
> The RestProducer doesn't have a way for specifying multiple query parameters.
> Given a header value that's a collection of values the resulting query
> parameter will be a joining of those values with the comma separator.
> Given that the query parameter can be specified multiple times, it is more
> common to have the parameter specified for each value of the collection
> rather than a single parameter with the coma-separated list of values.
> For example, endpoint URI of {{rest:GET:/v2/:pet/findByStatus}} and endpoint
> property {{queryParameters}} set to {{status=\{status\}}}, and on the message
> header the {{status}} is a collection or array of values (e.g.
> {{["available", "pending"]}}), the resulting URI path will be
> {{/v2/pet/findByStatus?status=available,pending}}.
> I think we could extemd the syntax of the placeholder (the {{\{status\}}}) to
> indicate that multiple query parameters should be provided instead of the
> coma-separated values.
> Perhaps something like {{status=\{status*\}}} as we already have
> {{status=\{status?\}}} to signify optional parameters. This would generate
> the URI path as {{/v2/pet/findByStatus?status=available&status=pending}}.
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