Removing a detached instance

[SrArcos]

Hello all, I don't know if my question must be here, but I need a help
with this problem and I don't know exactly where it can being solved.

I'm trying to remove an entity from the server: ObjectEntity.

this is the method in the entity:

[code]
public void remove() {
EntityManager em = null;
EntityTransaction tx = null;
try {
em = Manager.getEMF().createEntityManager();
tx = em.getTransaction();
tx.begin();

em.remove(this);

tx.commit();

} catch (Exception e) {
e.printStackTrace();
if (tx != null) {
tx.rollback();
}
} finally {
if (em != null) {
em.close();
}
}
}
[/code]

and this is the method to call the removal request:

[code]
public void doDelete(Record lgr) {
final Long id = Long.valueOf(lgr.getAttribute("id"));

ObjectEntityRequest cRequest =
RFService.getRF().getObjectEntityRequest();
cRequest.findObjectEntity(id).fire(new Receiver<ObjectEntityProxy>()
{
@Override
public void onSuccess(ObjectEntityProxy response) {
Request<Void> del =

RFService.getRF().getObjectEntityRequest()
.remove()
.using(aborrar);
del.fire(new Receiver<Void>() {
@Override
public void onSuccess(Void response) {
Window.alert("ObjectEntity borrado con &eacute;xito");

}
@Override
public void onFailure(ServerFailure error) {
Window.alert("Error al eliminar el ObjectEntity");
}
});
}
});
}
[/code]

And the server error I has is this:

java.lang.IllegalArgumentException: Removing a detached instance
org.mycompany.server.entities.ObjectEntity#400
at
org.hibernate.ejb.event.EJB3DeleteEventListener.performDetachedEntityDeletionCheck(EJB3DeleteEventListener.java:
65)
at
org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:
107)
at
org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:
73)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:956)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:934)
at
org.hibernate.ejb.AbstractEntityManagerImpl.remove(AbstractEntityManagerImpl.java:
702)
at
org.mycompany.server.entities.ObjectEntity.remove(ObjectEntity.java:
214)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
com.google.gwt.requestfactory.server.ReflectiveServiceLayer.invoke(ReflectiveServiceLayer.java:
164)
at
com.google.gwt.requestfactory.server.ServiceLayerDecorator.invoke(ServiceLayerDecorator.java:
89)
at
com.google.gwt.requestfactory.server.ServiceLayerDecorator.invoke(ServiceLayerDecorator.java:
89)
at
com.google.gwt.requestfactory.server.SimpleRequestProcessor.processInvocationMessages(SimpleRequestProcessor.java:
440)
at
com.google.gwt.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:
218)
at
com.google.gwt.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:
125)
at
com.google.gwt.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:
118)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
487)
at org.mortbay.jetty.servlet.ServletHandler
$CachedChain.doFilter(ServletHandler.java:1097)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:359)
at
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:
109)
at
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:
83)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:
67)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:
101)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:
105)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp(RememberMeProcessingFilter.java:
116)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:
91)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:
173)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:
271)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:
89)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:
235)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.concurrent.ConcurrentSessionFilter.doFilterHttp(ConcurrentSessionFilter.java:
99)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:
53)
at org.springframework.security.util.FilterChainProxy
$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:
174)
at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:
236)
at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:
167)
at org.mortbay.jetty.servlet.ServletHandler
$CachedChain.doFilter(ServletHandler.java:1088)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
360)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
729)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
405)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
152)
at
org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:
49)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
505)
at org.mortbay.jetty.HttpConnection
$RequestHandler.content(HttpConnection.java:843)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
395)
at org.mortbay.thread.QueuedThreadPool
$PoolThread.run(QueuedThreadPool.java:488)

Can someone help me, please?

[FrugoFrog]

shouldn't one merge the entity first ? so that it's managed/attached.

em.remove(em.merge(this));

regards

2011/3/7 SrArcos <sra...@gmail.com>:

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[SrArcos]

Thanks!! It works fine! I was going crazy for a line, thank you very
much!

On 8 mar, 23:41, FrugoFrog <frugof...@gmail.com> wrote:
> shouldn't one merge the entity first ? so that it's managed/attached.
>
> em.remove(em.merge(this));
>
> regards
>

> 2011/3/7 SrArcos <srar...@gmail.com>:

> ...
>
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