18 Dec
2011
18 Dec
'11
8:56 p.m.
Dear Christian,
Thank you very much for your answer. I have tried to use input and output streams but I could not pipeline the input stream to an output stream.
I have to explicitly create an output stream
ByteArrayOutputStream out = new ByteArrayOutputStream(); new XQuery(inputQuery).execute(context, out);
InputStream in = new ByteArrayInputStream(out.toByteArray());
then I store it to an xml file in my database:
session.execute("open " + Constants.DB);
session.add(fileName, in);
Could you tell me and/or give me the links to the instructions of pipelining the output stream to a database file?
Thank you very much.
Huy
--
Huy Vu
Oxford University, United Kingdom
http://www.cs.ox.ac.uk/people/huy.vu/
On 18 Dec 2011, at 10:52, BaseX Support wrote:
> Dear Huy,
>
> have you looked at the Session classes (LocalSession/ClientSession)?
> These classes supports input and output streams to do pipelining, such
> as querying results and sending them to another target without first
> materializing all data.
>
> Hope this helps,
> Christian
>
>
> On Sun, Dec 18, 2011 at 10:27 AM, Huy Vu qhuyvu@gmail.com wrote:
>> Hello,
>>
>> I am writing my code in Java and the result after querying xml files in my BaseX database is very large, about 500MB. Thus, I would like to stream the output to another xml file in the BaseX database. Could you tell me how to do this?
>>
>> Many thanks,
>>
>> Huy Vu
>>
>>
>> --
>> Huy Vu
>> Oxford University, United Kingdom
>> http://www.cs.ox.ac.uk/people/huy.vu/
>>