How about using a xml pull parser http://www.xmlpull.org/. ( I have used
it for reading the xmpp stanzas from a socket in a toy xmpp server impl )
Kiran Ayyagari
Ashish wrote:
Sounds like a pragmatic approach. If you _know_ that your XML messages will
be simple, and that you can detext the closing tag whatever data and
comments you will have into your XML, and that you can afford some bad
input, that's just a fine approach.
<snip/>
3. My limited knowledge of IoBuffer class has made code more cryptic
than it should have been :-)
The IoBuffer class is just a wrapper (a proxy) on top of ByteBuffer. Every
BytBuffer method is available in IoBuffer, but you have a few more
functionalities, one of them is that the IoBuffer is extensible (for the
record, it would have been much easier to extend the ByteBuffer class to
offer this functionality, but, sadly, this class can't be extended, as the
constructor is not public ...). So if you know how to deal with ByteBuffer,
you should be confortable with IoBuffer.
I am inclined towards using regular expression for parsing and will
post the code if I am able to do that.
You can also use JAXB with a byte stream unmarshaller (but a one which will
be statefull). You may have to write your own unmarshaller, i'm afraid (but
i'm not a specialist, so anyone with better knoweldge, please catch the ball
;)
Well the problem of getting multiple xml mesages back to back, was
what I was trying to resolve.
But couldn't, coz, again didn't knew how to remove the read part from
IoBuffer, once the trailing message was detected
and if it continued for a while my System would be out of memory, I guess.
BTW, when does the IoBuffer gets free up?
Using an XML parser would be like too much, coz it would parse and
throw parse exception each time the xml was incomplete
and if the IoBuffer had trailing xml message, it won't parse crying
about invalid message :-(
Again performance becomes critical. If anybody intent to use a similar
implementation, VTD-XML parser (http://vtd-xml.sourceforge.net/) will
be worth evaluating.
I need to do some homework on IoBuffer/ByteBuffer, like how to copy
chunk from middle (something like substring)
and how to remove the mark once it's set. :-)
Long way to go
