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http://opencast.jira.com/browse/MH-8850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=30832#comment-30832
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Christoph E. Driessen commented on MH-8850:
-------------------------------------------
The problem that the used JAXB implementation serializes single element
lists/arrays as an object was something I was facing while working for an ETH
project. I figured out that this behavior, along with others, is something
vendor specific. This makes it difficult to turn off.
I also tried to implement a custom ContextProvider to engage into the
serialization process but CXF (our JAXB implementation) does not support
registering ContextProvider via the @Provider annotation. Quote: "Putting
@Provider annotation on the provider class is something that should lead to
your provider being registered with the runtime. CXF does not support this
feature yet."
It is recommended to use some Spring bean config, but ... (fill in the gap
yourself ;)
Since I'm not a big fan of all those annotation driven frameworks that try to
magically handle things in the background leaving you alone when it comes to
serious applications I thought about a different approach. An approach that
yields control back to the developer. So I came up with a small set of
functions wrapping the json-simple library (which is already part of the
project) that lets you create JSON output like this:
jO(p("offset", offset),
p("count", ts.size()),
p("tracks", jA(jO(p("id", 1),
p("name", "bla"))));
yields:
{
"offset": 10,
"count": 20,
"tracks": [{
"id": 1,
"name": "bla"
}]
}
Along with some mapping over lists etc, you are able to build complex
structures in an easy, readable, modular and very maintainable way. This again
proves to me that function composition is a much stronger concept than any of
those (annotation) frameworks will ever be.
If you're interested along with some demo code leave me a line.
> Engage player cannot play videos with a single track
> ----------------------------------------------------
>
> Key: MH-8850
> URL: http://opencast.jira.com/browse/MH-8850
> Project: Matterhorn Project
> Issue Type: Bug
> Components: Engage Tools
> Affects Versions: Trunk, 1.4, 1.3, 1.2
> Reporter: Rubén Pérez Vázquez
> Priority: Release Blocker
> Fix For: 1.4, 1.3.1
>
> Attachments: compose-distribute-publish.xml, dos.png, uno.png
>
>
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