thanks all, the article clarify some thinks. cu Torsten Fohrer
> -----Ursprüngliche Nachricht----- > Von: Hans Bergsten [mailto:hans@;gefionsoftware.com] > Gesendet: Montag, 11. November 2002 21:06 > An: Tomcat Developers List > Betreff: Re: TagHandlerPool doesn't release Tags on reuse > > > Torsten, > > You may want to read the section about the tag handler lifecycle in an > article I wrote for ONJava.com: > > <http://www.onjava.com/pub/a/onjava/2001/11/07/jsp12.html> > > It explains how the methods are called and how to deal with attribute > values. > > Hans > Torsten Fohrer wrote: > > But if i looking into the generated jsp/servlet sources, i > see the following: > > > > --------------- example --- > > /* ---- tools:simpleCell ---- */ > > de.dcsi.util.jsp.taglibs.Validator_SimpleCell > > _jspx_th_tools_simpleCell_0 = > (de.dcsi.util.jsp.taglibs.Validator_SimpleCell) > > _jspx_ > > > tagPool_tools_simpleCell_width_valign_messageName_height_error > Name_errorColor.get(de.dcsi.util.jsp.taglibs.Validator_SimpleC > ell.class); > > _jspx_th_tools_simpleCell_0.setPageContext(pageContext); > > _jspx_th_tools_simpleCell_0.setParent(null); > > _jspx_th_tools_simpleCell_0.setErrorName("messages"); > > _jspx_th_tools_simpleCell_0.setMessageName("login"); > > _jspx_th_tools_simpleCell_0.setHeight("30"); > > _jspx_th_tools_simpleCell_0.setValign("top"); > > _jspx_th_tools_simpleCell_0.setWidth("14%"); > > _jspx_th_tools_simpleCell_0.setErrorColor( errorColor ); > > int _jspx_eval_tools_simpleCell_0 = > > _jspx_th_tools_simpleCell_0.doStartTag(); > > if (_jspx_th_tools_simpleCell_0.doEndTag() == > > javax.servlet.jsp.tagext.Tag.SKIP_PAGE) > > return; > > > > > > -------- example > > > > If i now reset my tag to a initial state in doStartTag() i > haven't any > > properties set........ > > > > Who call the release method in reaction of the GC, finalize > can't it. > > > > On Monday 11 November 2002 18:44, Kin-Man Chung wrote: > > > >>According to the JSP 1.2 Spec, the release method is not > invoked between > >>tag usages, but is invoked before GC of the tag handler. Therefore > >>it should not be used to reset the tag handler to its initial state; > >>you should do that in doStartTag. See p164 and p166. > >> > >> > >>>Date: Mon, 11 Nov 2002 13:32:31 +0100 > >>>From: Torsten Fohrer <[EMAIL PROTECTED]> > >>>Subject: TagHandlerPool doesn't release Tags on reuse > >>>To: "'[EMAIL PROTECTED]'" > <[EMAIL PROTECTED]> > >>> > >>> > >>>I have some jsp sites which taglibs. With pooling enabled, > some problems > >>>occures. > >>> > >>>Samples: > >>> > >>> Customer Registration: all fields have the same values??? > >>> Sessions Values are used together > >>> > >>>After reading the jsp spezifikation and source of the > >>>jasper/runtime/TagHandlerPool, i see that the pool doesn't > call release > >>>in his reuse method? > >>> > >>>After adding a general release in the reuse methode, which > perhaps breaks > >>>the lifecycle of the IterationTag ( see jsp-spec, page 168 ) it's > >>>working. > >>> > >>> /** > >>> * Adds the given tag handler to this tag handler > pool, unless this > >>>tag * handler pool has already reached its capacity, in > which case the > >>>tag * handler's release() method is called. > >>> * > >>> * @param handler Tag handler to add to this tag handler pool > >>> */ > >>> public synchronized void reuse(Tag handler) { > >>> > >>> // Releasing Tags, see jsp spec 1.2-fcs, page 172 > >>> handler.release(); > >>> > >>> if (current < (handlers.length - 1)) > >>> handlers[++current] = handler; > >>> } > >>> > >>>Torsten Fohrer > >>> > >>>********************************************************** > >>>* DCSI AG * Tel.: +49 7131 155 88-0 * > >>>* Lessingstrasse 17-19 * Fax.: +49 7131 155 88-99 * > >>>* D-74076 Heilbronn * [EMAIL PROTECTED] * > >>>* GERMANY * http://www.dcsi.de * > >>>********************************************************** > >>> > >>>-- > >>>To unsubscribe, e-mail: > >>><mailto:tomcat-dev-unsubscribe@;jakarta.apache.org> For additional > >>>commands, e-mail: <mailto:tomcat-dev-help@;jakarta.apache.org> > >> > >>-- > >>To unsubscribe, e-mail: > >><mailto:tomcat-dev-unsubscribe@;jakarta.apache.org> For > additional commands, > >>e-mail: <mailto:tomcat-dev-help@;jakarta.apache.org> > > > > > > > > -- > > To unsubscribe, e-mail: <mailto:tomcat-dev-unsubscribe@;jakarta.apache.org> > For additional commands, e-mail: <mailto:tomcat-dev-help@;jakarta.apache.org> > -- Hans Bergsten [EMAIL PROTECTED] Gefion Software http://www.gefionsoftware.com JavaServer Pages http://TheJSPBook.com -- To unsubscribe, e-mail: <mailto:tomcat-dev-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:tomcat-dev-help@;jakarta.apache.org> -- To unsubscribe, e-mail: <mailto:tomcat-dev-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:tomcat-dev-help@;jakarta.apache.org>
