May the sone property abstract. You are clearing it inside finishLoad() which means, even with caching enabled, the song (and the presumably Hibernate session that it was obtained from) is retained needlessly between requests.
Most likely culprit is caching disabled, which leaks some memory related to the series of Classes / ClassLoaders it builds. On 2/22/07, Arjan Verstoep <[EMAIL PROTECTED]> wrote:
Hi, I'm building an application with the Tapestry 4.0.2 framework, which manages my music-collection. I'm getting OutOfMemoryErrors since I've created a small ajax-ish component that refreshes every 10 seconds to show the song that is currently playing. A piece of javascript gets the Tapestry-page with the currently-playing song on it, and puts the generated html into a <div>. After 24 hours or so making these page-requests, an out of memory error occurs. I have the feeling that this new auto-refreshing component of mine only quickens the OutOfMemoryError, since I did get these errors before, but only after much longer uptimes. What am I doing wrong here? Is it the Spring OpenSessionInView-filter that I use that is wasting memory, am I not cleaning-up everything myself? Should I use Tapestry 4.1.1? Can anybody help? The code of the page follows: (You can also have a look at http://musicontroller.cvs.sourceforge.net/musicontroller/ for more sourcecode) Thanks, ~Arjan Verstoep public abstract class CurrentlyPlaying extends BasePage { public abstract SessionUserState getSessionUserState(); public abstract Dao getDao(); private Song _song = null; public Song getCurrentSong() { if (_song==null) { _song = getDao().getSongById(getSessionUserState().getDJ().getCurrentSongId()); } return _song; } public void finishLoad() { super.finishLoad(); _song = null; } } <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE page-specification PUBLIC "-//Apache Software Foundation//Tapestry Specification 4.0//EN" "http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd";> <page-specification class="org.musicontroller.gui.dynamic.CurrentlyPlaying"> <inject property="sessionUserState" type="state" object="sessionUserState"/> <inject property="dao" object="spring:dao"/> <component id="ifPlaying" type="If"> <binding name="condition" value="getCurrentSong()!=null"/> </component> <component id="songName" type="Insert"> <binding name="value" value="ognl:currentSong.name"/> </component> <component id="band" type="components/BandLink"> <binding name="band" value="ognl:currentSong.getBand()"/> <!-- Why doesn't currentSong.band work?? --> </component> </page-specification> <body jwcid="@Body"> <span jwcid="$content$"> <span jwcid="ifPlaying"> <span jwcid="band"/> - <span jwcid="songName"/> </span> </span> </body> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
-- Howard M. Lewis Ship TWD Consulting, Inc. Independent J2EE / Open-Source Java Consultant Creator and PMC Chair, Apache Tapestry Creator, Apache HiveMind Professional Tapestry training, mentoring, support and project work. http://howardlewisship.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
