Hi,
I have a web app with struts and get very often a FaultFailureException in
cayenne (RC1). Either with the text "state=hollow" or "state=transient". It
happens often after editing some data in the frontend, save and commit it and
try to load the previous saved data. And when the error occurs I get some other
exceptions on nearly every database access. To 'solve' the problem I have to
logout - so that the session will be destroyed and login again (with a new
session). Now I can see all my changes - so I'm sure that all changes were
committed. What could I'm doing wrong ?
2006-06-22 10:57:45,097 [ERROR]
EditPlantConfigAction.com.sunreader.sr2.struts.actions.portal.EditPlantConfigAction.throwSystemException:
>
org.objectstyle.cayenne.FaultFailureException: [v.1.2RC1 May 31 2006] Error
resolving fault for ObjectId: <ObjectId:TblPartnerpersonId=498> and state
(hollow). Possible cause - matching row is missing from the database.
at
org.objectstyle.cayenne.access.DataContext.prepareForAccess(DataContext.java:1851)
at
org.objectstyle.cayenne.CayenneDataObject.readProperty(CayenneDataObject.java:238)
at com.sunreader.sr2.back.auto._TblPartner.getName(_TblPartner.java:31)
at
com.sunreader.sr2.back.util.MapperHelper.partnerToBo(MapperHelper.java:314)
at
com.sunreader.sr2.back.dao.UserDAO.setAccountPersonData(UserDAO.java:118)
at com.sunreader.sr2.back.dao.UserDAO.getUser(UserDAO.java:100)
at com.sunreader.sr2.back.dao.UserDAO.getUserAccount(UserDAO.java:143)
at
com.sunreader.sr2.back.proxy.CayenneProxy.getUserAccount(CayenneProxy.java:105)
at
com.sunreader.sr2.back.BusinessFacade.getUserAccount(BusinessFacade.java:91)
at
com.sunreader.sr2.struts.actions.portal.EditPlantConfigAction.doExecute(EditPlantConfigAction.java:34)
at com.sunreader.base.struts.BasicAction.execute(BasicAction.java:259)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
com.sunreader.sr2.filter.MandantSessionFilter.doFilter(MandantSessionFilter.java:63)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.valves.FastCommonAccessLogValve.invoke(FastCommonAccessLogValve.java:495)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
2006-06-22 15:46:16,242 [ERROR]
EditPlantConfigAction.com.sunreader.sr2.struts.actions.portal.EditPlantConfigAction.throwSystemException:
>
org.objectstyle.cayenne.FaultFailureException: [v.1.2RC1 May 31 2006] Error
resolving fault for ObjectId: <ObjectId:TblPartnerpersonId=208> and state
(transient). Possible cause - matching row is missing from the database.
at
org.objectstyle.cayenne.access.DataContext.prepareForAccess(DataContext.java:1851)
at
org.objectstyle.cayenne.CayenneDataObject.readProperty(CayenneDataObject.java:238)
at com.sunreader.sr2.back.auto._TblPartner.getName(_TblPartner.java:31)
at
com.sunreader.sr2.back.util.MapperHelper.partnerToBo(MapperHelper.java:314)
at
com.sunreader.sr2.back.dao.UserDAO.setAccountPersonData(UserDAO.java:118)
at com.sunreader.sr2.back.dao.UserDAO.getUser(UserDAO.java:100)
at com.sunreader.sr2.back.dao.UserDAO.getUserAccount(UserDAO.java:143)
at
com.sunreader.sr2.back.proxy.CayenneProxy.getUserAccount(CayenneProxy.java:105)
at
com.sunreader.sr2.back.BusinessFacade.getUserAccount(BusinessFacade.java:91)
at
com.sunreader.sr2.struts.actions.portal.EditPlantConfigAction.doExecute(EditPlantConfigAction.java:34)
at com.sunreader.base.struts.BasicAction.execute(BasicAction.java:259)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
com.sunreader.sr2.filter.MandantSessionFilter.doFilter(MandantSessionFilter.java:63)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.valves.FastCommonAccessLogValve.invoke(FastCommonAccessLogValve.java:495)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
The error happens mostly when cayenne tries to resolve the relation tblPerson
-> tblPartner. It's an 1:1 relation but the relation can be null. It means
that a person can have a 'Partner' but don't need it (the key column in
tblPerson.partnerId can be null). What I saw is - when the partnerId is null I
get the "state=transient" exception and when the partnerId is not empty I get
the "state=hollow" exception. The 'partner'-dataset was created previously and
can't changed anymore. The application gets the tblPerson object with a
standard query (but needs first an account object) :
DataContext context = getDaoContext(ctx);
TblAccount account;
Expression expr = ExpressionFactory.matchExp("loginName", loginname);
List<TblAccount> accountList = context.performQuery(new
SelectQuery(TblAccount.class, expr));
return accountList (0);
and then :
if (account.getTblPerson().getTblPartner() != null) {
TblPartner partner = account.getTblPerson().getTblPartner();
partner.getName() ; <----- here the exception happens
}
else {
...
}
What makes me wonder is - even if a person don't have a partner the condition
is executed.
Additionally I have a background thread that starts every 15 minutes and
executes a lot (!) of selects and inserts. Could that have any influence ?
I would be very gratefull for every hint. If it helps - we use MSSQL 2000 and
jtds
Lothar
To Andrus:
I wrote you directly a mail at your private address about the NPE in LRUMap.
Maybe you can check it and give me an answer.
_____________________________________________________________________
Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!
http://smartsurfer.web.de/?mc=100071&distributionid=000000000071
