[JBossCache] - MySQL replication and JBoss Cache Pattern
by nicpottier
I'm trying to build a highly available and scalable simple store using JBoss Cache backed by mySQL and I can't help but get the feeling that I'm reinventing a wheel that has no doubt been built before.
My requirements are:
* high availability - a single box dying will not cause loss of data (minutes of data loss is ok however)
* ~linear scalability - speed of gets can scale linearly with the # of cache nodes
* it's ok for puts to be bound by DB
My current thinking is to use JBossCache in a 'buddy' mode, backed by 2+ MySql nodes replication to each other. The cache boxes would be dedicated for caching and accessed via a simple client API.
The client would hash it's 'key' and connect to the same cache node when doing puts and gets on the same key. Writes would write through to the MySQL DB, which would then replicate to one or more others.
In the event of a node going down (with it's MySQL DB) then the client would detect this (or a load balancer would) and new requests would go to another Node. In theory, one of the 'buddies' should have the data available for fast lookup, but worst case it could come from the replicated DB.
Does this sound sane? How have others combined a replicated MySQL DB with JBoss Cache to atain these goals?
-Nic
View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977619#3977619
Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3977619
19 years, 7 months
[Persistence, JBoss/CMP, Hibernate, Database] - ERROR: invalid byte sequence for encoding "UTF8": 0x00
by dsailer
I am using EJB3/Hibernate in a query that gets the error in the subject line. The query is:
+++++++++++++++++++++++++++++
19:39:06,199 INFO [JukeboxManagerEJB] looking for genre named
19:39:06,202 INFO [STDOUT] Hibernate: select genrepojo0_.genre_id as genre1_218_, genrepojo0_.name as name218_ from genre genrepojo0_ where upper(genrepojo0_.name)=?
19:39:06,208 WARN [JDBCExceptionReporter] SQL Error: 0, SQLState: 22021
19:39:06,208 ERROR [JDBCExceptionReporter] ERROR: invalid byte sequence for encoding "UTF8": 0x00
+++++++++++++++++
The EJB method call looks like this:
public Genre getGenreByName(String name)
{
Genre genre = BeanFactory.makeGenre();
logger.info("looking for genre named <" + name + ">");
if (name != null)
{
Query query = em.createQuery("SELECT OBJECT(c) FROM GenrePojo c WHERE UPPER(name) = ?1");
query.setParameter(1,name.toUpperCase());
logger.info("did the parm get set for genre query");
try
{
genre = (GenrePojo)query.getSingleResult();
}
catch(javax.persistence.NoResultException e)
{
logger.info("no result exception");
}
catch(javax.persistence.NonUniqueResultException e)
{
logger.info("not unique");
}
}
logger.info("found this genre at id <" + genre.getGenreId() + ">");
return genre;
}
+++++++++++++++++++++++++++++++
The full stack trace back to the application is:
ate.exception.DataException: could not execute query; CausedByException is:
org.hibernate.exception.DataException: could not execute query
at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.
java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java
:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:10
6)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:227)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandle
r.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not e
xecute query
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManage
rImpl.java:567)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:72)
at net.hscsi.jukebox.manager.ejb.JukeboxManagerEJB.getGenreByName(JukeboxManagerEJB.java:184)
at sun.reflect.GeneratedMethodAccessor1167.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.
java:63)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEn
tityManagerInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.
java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java
:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:10
6)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:227)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandle
r.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:190)
at org.jboss.remoting.Client.invoke(Client.java:525)
at org.jboss.remoting.Client.invoke(Client.java:488)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:55)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.
java:61)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java
:55)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102)
at $Proxy0.getGenreByName(Unknown Source)
at net.hscsi.jukebox.batch.UpdateMp3Library.addSong(UpdateMp3Library.java:280)
at net.hscsi.jukebox.batch.UpdateMp3Library.update(UpdateMp3Library.java:216)
at net.hscsi.jukebox.batch.UpdateMp3Library.main(UpdateMp3Library.java:79)
Caused by: org.hibernate.exception.DataException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2148)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:392)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:333)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:756)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:63)
at net.hscsi.jukebox.manager.ejb.JukeboxManagerEJB.getGenreByName(JukeboxManagerEJB.java:184)
at sun.reflect.GeneratedMethodAccessor1167.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.
java:63)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEn
tityManagerInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.
java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java
:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:10
6)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:227)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandle
r.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
Caused by: java.sql.SQLException: ERROR: invalid byte sequence for encoding "UTF8": 0x00
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1471)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1256)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:175)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:388)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:3
29)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:239)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedState
ment.java:236)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1669)
at org.hibernate.loader.Loader.doQuery(Loader.java:662)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2145)
... 42 more
javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not execute quer
y
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManage
rImpl.java:567)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:72)
at net.hscsi.jukebox.manager.ejb.JukeboxManagerEJB.getGenreByName(JukeboxManagerEJB.java:184)
at sun.reflect.GeneratedMethodAccessor1167.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.
java:63)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEn
tityManagerInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.
java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java
:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:10
6)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:227)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandle
r.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:190)
at org.jboss.remoting.Client.invoke(Client.java:525)
at org.jboss.remoting.Client.invoke(Client.java:488)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:55)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.
java:61)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java
:55)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102)
at $Proxy0.getGenreByName(Unknown Source)
at net.hscsi.jukebox.batch.UpdateMp3Library.addSong(UpdateMp3Library.java:280)
at net.hscsi.jukebox.batch.UpdateMp3Library.update(UpdateMp3Library.java:216)
at net.hscsi.jukebox.batch.UpdateMp3Library.main(UpdateMp3Library.java:79)
Caused by: org.hibernate.exception.DataException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2148)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:392)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:333)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:756)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:63)
at net.hscsi.jukebox.manager.ejb.JukeboxManagerEJB.getGenreByName(JukeboxManagerEJB.java:184)
at sun.reflect.GeneratedMethodAccessor1167.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.
java:63)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEn
tityManagerInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.
java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java
:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:10
6)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:227)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandle
r.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
Caused by: java.sql.SQLException: ERROR: invalid byte sequence for encoding "UTF8": 0x00
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1471)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1256)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:175)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:388)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:3
29)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:239)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedState
ment.java:236)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1669)
at org.hibernate.loader.Loader.doQuery(Loader.java:662)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2145)
... 42 more
++++++++++++++++++++++++++
Not sure what is going wrong. This same EJB method gets execute many times in the same main program with no problem. It just bombs when it gets to this example. Not sure what is going on.
THis is JBoss 4.0.4
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_08-b03)
THe backend database is PostreSQL 8.1.4
Fedora Core 5 - 2.6.15-1.2054_FC5
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19 years, 7 months
[EJB 3.0] - List in EJB3 Entity:
by adamcc
Hi all,
Please forgive this newbie post - I have searched the forum and the tutorials/specification for an answer without success. I'm sure the solution must be something simple.
I'm trying to make an entity that has a collection of objects as one of it's attributes:
package ch.adamcc.planeres2.entity;
|
| import java.util.ArrayList;
| import java.util.List;
|
| import javax.persistence.Entity;
| import javax.persistence.Id;
|
| @Entity
| public class SimpleEntity {
| private long _id;
| private String _stringField;
| private List<String> _stringList;
| private long[] _longArray;
|
| public SimpleEntity()
| {
| _stringList = new ArrayList<String>();
| _longArray = new long[2];
| }
|
| @Id
| public long getId() {
| return _id;
| }
|
| public void setId(long id) {
| _id = id;
| }
|
| public String getStringField() {
| return _stringField;
| }
|
| public void setStringField(String stringField) {
| _stringField = stringField;
| }
|
| public List<String> getStringList() {
| return _stringList;
| }
|
| public void setStringList(List<String> stringList) {
| _stringList = stringList;
| }
|
| public long[] getLongArray() {
| return _longArray;
| }
|
| public void setLongArray(long[] longArray) {
| _longArray = longArray;
| }
| }
When I deploy the entity I get the following exception:
2006-10-11 15:02:47,115 WARN [org.jboss.system.ServiceController] Problem starting service persistence.units:ear=planeres2.ear,jar=planeres2.jar,unitName=planeres2-persistence-unit
| javax.persistence.PersistenceException: org.hibernate.MappingException: Could not determine type for: java.util.List, for columns: [org.hibernate.mapping.Column(stringList)]
| at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:695)
| at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:127)
| at org.jboss.ejb3.entity.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:264)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.ejb3.ServiceDelegateWrapper.startService(ServiceDelegateWrapper.java:102)
| at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
| at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
| at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
| at $Proxy0.start(Unknown Source)
| at org.jboss.system.ServiceController.start(ServiceController.java:417)
| at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy77.start(Unknown Source)
| at org.jboss.ejb3.JmxKernelAbstraction.install(JmxKernelAbstraction.java:96)
| at org.jboss.ejb3.Ejb3Deployment.startPersistenceUnits(Ejb3Deployment.java:467)
| at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:317)
| at org.jboss.ejb3.Ejb3Module.startService(Ejb3Module.java:91)
| at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
| at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
| at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
| at $Proxy0.start(Unknown Source)
| at org.jboss.system.ServiceController.start(ServiceController.java:417)
| at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy34.start(Unknown Source)
| at org.jboss.ejb3.EJB3Deployer.start(EJB3Deployer.java:449)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
| at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
| at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
| at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
| at org.jboss.ws.server.WebServiceDeployer.start(WebServiceDeployer.java:117)
| at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
| at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy35.start(Unknown Source)
| at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1007)
| at org.jboss.deployment.MainDeployer.start(MainDeployer.java:997)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:808)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:771)
| at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
| at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy6.deploy(Unknown Source)
| at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
| at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
| at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
| at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
| at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)
| Caused by: org.hibernate.MappingException: Could not determine type for: java.util.List, for columns: [org.hibernate.mapping.Column(stringList)]
| at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:266)
| at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:253)
| at org.hibernate.mapping.Property.isValid(Property.java:185)
| at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:410)
| at org.hibernate.mapping.RootClass.validate(RootClass.java:192)
| at org.hibernate.cfg.Configuration.validate(Configuration.java:1026)
| at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1211)
| at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:688)
| ... 99 more
|
As far as I can tell I have followed the specification, but the documentation seems to be a little vague on how to do this and I couldn't find any examples to follow. I did try various variations on the same theme, without success.
I would very much appreciate a hint on what I am doing wrong.
Thanks very much in advance for your help.
Yours,
Adam.
View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977608#3977608
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19 years, 7 months