Paul,
Thanks. I was leading that way myself. My concern regarding using jaxb fragments for streaming was the ability to marshal to json seamlessly. I guess I will find out.
-Moiz
-----Original Message-----
From: Paul.Sandoz_at_Sun.COM [mailto:Paul.Sandoz_at_Sun.COM]
Sent: Tuesday, February 09, 2010 9:06 AM
To: users_at_jersey.dev.java.net
Subject: Re: [Jersey] using jaxb to stream a large data set
On Feb 9, 2010, at 1:15 AM, Moiz Dohadwala wrote:
> Hello,
>
> We am currently using jersey to build a set of reports. The reports
> on the UI are paginated, since the data set can potentially be very
> large. However, we need to provide a download option to allow the
> user to download the entire set. Currently we have been using jaxb
> to provide support for xml as well as json. What options to we have
> to support streaming streaming using jaxb in jersey?
>
JAXB is not a streaming-based API so i guess any approach would be to
utilize "fragments" of JAXB.
The only current support for fragments of JAXB is returning a List<T>
or Collection<T> (and it would be really easy to extend to support
Iterator<T>).
You could implement a Collection that supports a lazy iterator.
Alternatively you could implement the JAXB fragment marshaling
yourself using StreamingOutput [1].
Paul.
[1]
https://jsr311.dev.java.net/nonav/javadoc/javax/ws/rs/core/StreamingOutput.html
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