GrassField

This is purely a Hibernate problem. I have one to many relationship between tables. Mapping table c contains the relations between table a and table b. When I try to save a new object in a, which has a set of b objects (All those b objects are already existing), I got an Hibernate exception saying

a different object with the same identifier value was already  associated with the session:
[org.grassfield.common.entity.User#4];  nested exception is org.hibernate.NonUniqueObjectException:
a different  object with the same identifier value was already associated with the  session:
[org.grassfield.common.entity.User#4]

Seems to be quiet common issue for one to many or many to many relationship in hibernate. Need to look at it tomorrow.

Finally I found the table I have created to store the many to many relation is goofy. I removed the id column (autoincrement and PK). It resolved the issue. finally I have only two columns to store the relations.

Done!

This is one nasty exception occured due to carelessness.  I have added one field error in my action.

super.addFieldError("userName", "User name is null");

Instead of the field name “userName”, I have given the variable itself

super.addFieldError(userName, "User name is null");

Replacing this removed this error.

10:40:24,859        ERROR runtime:96 -

Expression eKey is undefined on line 71, column 63 in template/simple/fielderror.ftl.

The problematic instruction:

----------

==> assignment: eValue=fieldErrors[eKey] [on line 71, column 33 in template/simple/fielderror.ftl]

----------

Java backtrace for programmers:

----------

freemarker.core.InvalidReferenceException: Expression eKey is undefined on line 71, column 63 in template/simple/fielderror.ftl.

 at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)

 at freemarker.core.DynamicKeyName._getAsTemplateModel(DynamicKeyName.java:85)

 at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)

 at freemarker.core.Assignment.accept(Assignment.java:90)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:167)

 at freemarker.core.Environment.visit(Environment.java:415)

 at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.IfBlock.accept(IfBlock.java:82)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.Environment.process(Environment.java:188)

 at freemarker.template.Template.process(Template.java:237)

 at org.apache.struts2.components.template.FreemarkerTemplateEngine.renderTemplate(FreemarkerTemplateEngine.java:182)

 at org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:559)

 at org.apache.struts2.components.UIBean.end(UIBean.java:513)

 at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)

 at org.apache.jsp.index_jsp._jspx_meth_s_005ffielderror_005f0(index_jsp.java:193)

 at org.apache.jsp.index_jsp._jspx_meth_s_005fform_005f0(index_jsp.java:132)

 at org.apache.jsp.index_jsp._jspService(index_jsp.java:78)

 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)

 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)

 at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)

 at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)

 at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)

 at org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:154)

 at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)

 at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:361)

 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:265)

 at com.eginnovations.common.interceptor.AuthorizationInterceptor.intercept(AuthorizationInterceptor.java:42)

 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)

 at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)

 at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468)

 at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)

 at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:76)

 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)

 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)

 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)

 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

 at java.lang.Thread.run(Unknown Source)

May 12, 2010 10:40:24 AM org.apache.catalina.core.ApplicationDispatcher invoke

SEVERE: Servlet.service() for servlet jsp threw exception

Expression eKey is undefined on line 71, column 63 in template/simple/fielderror.ftl.

The problematic instruction:

----------

==> assignment: eValue=fieldErrors[eKey] [on line 71, column 33 in template/simple/fielderror.ftl]

----------

Java backtrace for programmers:

----------

freemarker.core.InvalidReferenceException: Expression eKey is undefined on line 71, column 63 in template/simple/fielderror.ftl.

 at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)

 at freemarker.core.DynamicKeyName._getAsTemplateModel(DynamicKeyName.java:85)

 at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)

 at freemarker.core.Assignment.accept(Assignment.java:90)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:167)

 at freemarker.core.Environment.visit(Environment.java:415)

 at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.IfBlock.accept(IfBlock.java:82)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.MixedContent.accept(MixedContent.java:92)

 at freemarker.core.Environment.visit(Environment.java:208)

 at freemarker.core.Environment.process(Environment.java:188)

 at freemarker.template.Template.process(Template.java:237)

 at org.apache.struts2.components.template.FreemarkerTemplateEngine.renderTemplate(FreemarkerTemplateEngine.java:182)

 at org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:559)

 at org.apache.struts2.components.UIBean.end(UIBean.java:513)

 at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)

 at org.apache.jsp.index_jsp._jspx_meth_s_005ffielderror_005f0(index_jsp.java:193)

 at org.apache.jsp.index_jsp._jspx_meth_s_005fform_005f0(index_jsp.java:132)

 at org.apache.jsp.index_jsp._jspService(index_jsp.java:78)

 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)

 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)

 at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)

 at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)

 at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)

 at org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:154)

 at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)

 at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:361)

 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:265)

 at com.eginnovations.common.interceptor.AuthorizationInterceptor.intercept(AuthorizationInterceptor.java:42)

 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)

 at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)

 at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468)

 at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)

 at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:76)

 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)

 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)

 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)

 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

 at java.lang.Thread.run(Unknown Source)

I have a scheduled job running with spring beans. It is scheduled such that it will run once in a day. Whenever I restart the webapp, it is running for the first day. but on the second day onwards, it is not running – quits with the below exception Seems to be an issue with DB connectivity. Need to look at it.

00:54:28,090  WARN JDBCExceptionReporter:77 - SQL Error: 0, SQLState: 08S01
00:54:28,090 ERROR JDBCExceptionReporter:78 - Communications link failure due to underlying exception: 

** BEGIN NESTED EXCEPTION ** 

java.net.SocketException
MESSAGE: Software caused connection abort: socket write error

STACKTRACE:

java.net.SocketException: Software caused connection abort: socket write error
 at java.net.SocketOutputStream.socketWrite0(Native Method)
 at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
 at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
 at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
 at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
 at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2744)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1612)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
 at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
 at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
 at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
 at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
 at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
 at org.hibernate.loader.Loader.doQuery(Loader.java:674)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
 at org.hibernate.loader.Loader.doList(Loader.java:2220)
 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
 at org.hibernate.loader.Loader.list(Loader.java:2099)
 at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
 at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
 at com.eginnovations.license.dao.LicenseDAO.listExpiry(LicenseDAO.java:106)
 at com.eginnovations.license.service.LicenseService.listExpiry(LicenseService.java:291)
 at com.eginnovations.license.jobs.ExpiryTimer.run(ExpiryTimer.java:85)
 at java.util.TimerThread.mainLoop(Timer.java:512)
 at java.util.TimerThread.run(Timer.java:462)

** END NESTED EXCEPTION **

Last packet sent to the server was 15 ms ago.
00:54:28,090 ERROR ExpiryTimer:95 - Error in expiry job
org.hibernate.exception.JDBCConnectionException: could not execute query
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.loader.Loader.doList(Loader.java:2223)
 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
 at org.hibernate.loader.Loader.list(Loader.java:2099)
 at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
 at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
 at com.eginnovations.license.dao.LicenseDAO.listExpiry(LicenseDAO.java:106)
 at com.eginnovations.license.service.LicenseService.listExpiry(LicenseService.java:291)
 at com.eginnovations.license.jobs.ExpiryTimer.run(ExpiryTimer.java:85)
 at java.util.TimerThread.mainLoop(Timer.java:512)
 at java.util.TimerThread.run(Timer.java:462)
Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: 

** BEGIN NESTED EXCEPTION ** 

java.net.SocketException
MESSAGE: Software caused connection abort: socket write error

STACKTRACE:

java.net.SocketException: Software caused connection abort: socket write error
 at java.net.SocketOutputStream.socketWrite0(Native Method)
 at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
 at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
 at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
 at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
 at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2744)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1612)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
 at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
 at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
 at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
 at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
 at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
 at org.hibernate.loader.Loader.doQuery(Loader.java:674)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
 at org.hibernate.loader.Loader.doList(Loader.java:2220)
 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
 at org.hibernate.loader.Loader.list(Loader.java:2099)
 at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
 at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
 at com.eginnovations.license.dao.LicenseDAO.listExpiry(LicenseDAO.java:106)
 at com.eginnovations.license.service.LicenseService.listExpiry(LicenseService.java:291)
 at com.eginnovations.license.jobs.ExpiryTimer.run(ExpiryTimer.java:85)
 at java.util.TimerThread.mainLoop(Timer.java:512)
 at java.util.TimerThread.run(Timer.java:462)

** END NESTED EXCEPTION **

Last packet sent to the server was 15 ms ago.
 at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2759)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1612)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
 at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
 at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
 at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
 at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
 at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
 at org.hibernate.loader.Loader.doQuery(Loader.java:674)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
 at org.hibernate.loader.Loader.doList(Loader.java:2220)
 ... 10 more

I am trying to compile a few .C files with tuxedo’s buildclient command. I have gcc in my path.

# which gcc

/bin/gcc

when I try to issue the buildclient command it returns

sh: cc: not found

CMDTUX_CAT:512: ERROR: Cannot execute C compiler cc -I$TUXDIR/include -o ....

it goes on!

Is there any compulsion to use only CC? Still working on it will update this post later.

This is one nasty exception I experienced today.

I execute one .executable file from java. Reading the inputstream and the error stream with two different threads (why). I wait till ‘join’ing the thread then I took the process exit value.

processLogThread.join();

errorLogThread.join();

 try {

 logger.info("Thread status:"+processLogThread.isAlive()+" "+errorLogThread.isAlive());

 logger.info("Process exit value:"+p.exitValue());

 } catch (Exception e) {

 logger.error("Error while reading process exit value", e);

 }

Unfortunately, it threw the following exception. The streams are closed. Threads are dead. But it says process has not exited. aaw!!

18:19:39,802         INFO Utilities:432 - Thread status:false false

18:19:39,805        ERROR Utilities:435 - Error while reading process exit value

java.lang.IllegalThreadStateException: process has not exited

 at java.lang.ProcessImpl.exitValue(Native Method)

 at com.eginnovations.license.util.Utilities.genLicense5(Utilities.java:433)