Re: JDOM parser reuse memory problem
Michael Kay <[email protected]>
| Newsgroups | gmane.comp.java.jdom.general |
|---|---|
| Message-ID | <[email protected]> |
On 10/11/2011 18:51, Rolf Lear wrote: > Hi Randall, Michael. > > It's an interesting observation... and I can see the implications. I would > like to take a closer look at at, but that may take a little while. > > I filed https://github.com/hunterhacker/jdom/issues/52 > > 'Off the cuff' I can think of one work-around and a few solutions (in > addition to what Michael has suggested) > > 1. immediately after parsing your real document you then parse a > dummy/small/inmemory document (even invalid - and catch the exception). > 2. Currently when you do-no reuse the parser, it goes back to 'first > principals' and queries JAXP, etc. to find a parser instance Instead it > could 'cache' the parser 'source' after the first time, and then just > create a new instance, instead of doing all the class-based lookups... Ouch. Creating a new parser to parse a small document is a cost that it's nice to avoid, but it isn't going to kill you. Going through the JAXP factory process to get a new ParserFactory is a monstrous cost that can dominate all other processing - and reusing the factory costs nothing. Michael Kay Saxonica _______________________________________________ To control your jdom-interest membership: http://www.jdom.org/mailman/options/jdom-interest/[email protected]