First the obvious... make sure your build/jar process includes ALL the Torque generated files and packages. The class mentioned in the error is a generated one. Depending on your build settings, there will be two or more subpackages created by default below the torque targetPackage you specified. There is also a MapBuilder related org.apache.torque.linkage package generated that is used if you need to manually initialize all your schema's map info.
Some other posiblities: Did you manually defined any of the subpackages in your build properties? Depending on the Torque version, there are some known issues with trying to set a lot of these. Also, Tomcat impliments strict class loader security. I.e., if a class is loaded at the lib/shared level, it may not "see" classes in the WEB-INF/lib directory. This is to keep webapps from getting unauthorized access to system level functions. This is especially tight for the Class.forName type of calls that the MapBuilder code uses. Anyway, the way to solve this is to make sure your OM classes are at the same "level" (e.g. lib/shared or WEB-INF/lib) as the Torque runtime jars. One minor design consideration here is that if you put all your OM files at the webapp level, you will have a connection pool for each webapp vs a single connection pool if you keep you OM level stuff at the commons/shared level. There are advantages and disadvantages to both ways. > -----Original Message----- > From: Jon August [mailto:[EMAIL PROTECTED] > Sent: Wednesday, December 13, 2006 10:29 AM > To: Apache Torque Users List > Subject: MapBuilder failed trying to instantiate > > Hello, > > I'm working on a new project using MySQL. When I start up > Tomcat 5.0, I get the errors below. when I try to do an > insert, I get this: > > org.apache.torque.TorqueException: java.lang.ClassNotFoundException: > com.internection.washpress.torque.map.ItemMapBuilder > > I have a feeling it's a problem with the jar files I'm using, > but I don't know where to start. Any help is appreciated. > > Thanks, > -Jon > > > > > SEVERE: BasePeer.MapBuilder failed trying to instantiate: > com.internection.washpress.torque.map.ItemMapBuilder > java.lang.ClassNotFoundException: > com.internection.washpress.torque.map.ItemMapBuilder > at org.apache.catalina.loader.WebappClassLoader.loadClass > (WebappClassLoader.java:1340) > at org.apache.catalina.loader.WebappClassLoader.loadClass > (WebappClassLoader.java:1189) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302) > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:141) > at > org.apache.torque.util.BasePeer.getMapBuilder(BasePeer.java:1355) > at com.internection.washpress.torque.BaseItemPeer.getMapBuilder > (BaseItemPeer.java:59) > at > com.internection.washpress.torque.BaseItem.save(BaseItem.java:459) > at > org.apache.jsp.addExecute_jsp._jspService(addExecute_jsp.java:69) > at > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at org.apache.jasper.servlet.JspServletWrapper.service > (JspServletWrapper.java:324) > at org.apache.jasper.servlet.JspServlet.serviceJspFile > (JspServlet.java:292) > at > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > (ApplicationFilterChain.java:237) > at org.apache.catalina.core.ApplicationFilterChain.doFilter > (ApplicationFilterChain.java:157) > at org.apache.catalina.core.StandardWrapperValve.invoke > (StandardWrapperValve.java:214) > at org.apache.catalina.core.StandardValveContext.invokeNext > (StandardValveContext.java:104) > at org.apache.catalina.core.StandardPipeline.invoke > (StandardPipeline.java:520) > at org.apache.catalina.core.StandardContextValve.invokeInternal > (StandardContextValve.java:198) > at org.apache.catalina.core.StandardContextValve.invoke > (StandardContextValve.java:152) > at org.apache.catalina.core.StandardValveContext.invokeNext > (StandardValveContext.java:104) > at org.apache.catalina.core.StandardPipeline.invoke > (StandardPipeline.java:520) > at org.apache.catalina.core.StandardHostValve.invoke > (StandardHostValve.java:137) > at org.apache.catalina.core.StandardValveContext.invokeNext > (StandardValveContext.java:104) > at org.apache.catalina.valves.ErrorReportValve.invoke > (ErrorReportValve.java:117) > at org.apache.catalina.core.StandardValveContext.invokeNext > (StandardValveContext.java:102) > at org.apache.catalina.core.StandardPipeline.invoke > (StandardPipeline.java:520) > at org.apache.catalina.core.StandardEngineValve.invoke > (StandardEngineValve.java:109) > at org.apache.catalina.core.StandardValveContext.invokeNext > (StandardValveContext.java:104) > at org.apache.catalina.core.StandardPipeline.invoke > (StandardPipeline.java:520) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java: > 929) > at org.apache.coyote.tomcat5.CoyoteAdapter.service > (CoyoteAdapter.java:160) > at org.apache.coyote.http11.Http11Processor.process > (Http11Processor.java:799) > at org.apache.coyote.http11.Http11Protocol > $Http11ConnectionHandler.processConnection(Http11Protocol.java:705) > at org.apache.tomcat.util.net.TcpWorkerThread.runIt > (PoolTcpEndpoint.java:577) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run > (ThreadPool.java:683) > at java.lang.Thread.run(Thread.java:552) > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > Duke CE Privacy Statement Please be advised that this e-mail and any files transmitted with it are confidential communication or may otherwise be privileged or confidential and are intended solely for the individual or entity to whom they are addressed. If you are not the intended recipient you may not rely on the contents of this email or any attachments, and we ask that you please not read, copy or retransmit this communication, but reply to the sender and destroy the email, its contents, and all copies thereof immediately. Any unauthorized dissemination, distribution or copying of this communication is strictly prohibited. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
