I could. However, I prefer to reuse the current jaxb beans that I am using for the paginated ui reports. The ui reports have filters. The download option needs to apply the same filters. So, it is essentially the same code as the UI reports but without paging. So I need to enable/handle streaming in that case.
-----Original Message-----
From: Felipe Gaścho [mailto:fgaucho_at_gmail.com]
Sent: Tuesday, February 09, 2010 9:54 AM
To: users_at_jersey.dev.java.net
Subject: Re: [Jersey] using jaxb to stream a large data set
can you use Stax?
http://jcp.org/en/jsr/detail?id=173
On Tue, Feb 9, 2010 at 6:52 PM, Paul Sandoz <Paul.Sandoz_at_sun.com> wrote:
>
> On Feb 9, 2010, at 6:44 PM, Moiz Dohadwala wrote:
>
>> 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.
>>
>
> You should be able to do that if you return a collection with a lazy
> iterator implementation.
>
> The StreamingOutput can work for XML or JSON but you need to do that work
> using JSONJAXBContext when JSON is used. Or say using Jackson instead.
>
> Paul.
>
>> -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
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
>> For additional commands, e-mail: users-help_at_jersey.dev.java.net
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
>> For additional commands, e-mail: users-help_at_jersey.dev.java.net
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> For additional commands, e-mail: users-help_at_jersey.dev.java.net
>
>
--
------------------------------------------
Felipe Gaścho
10+ Java Programmer
CEJUG Senior Advisor
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
For additional commands, e-mail: users-help_at_jersey.dev.java.net