[JBoss-user] [EJB 3.0] - Re: Lazy collection load
Obviouly is not the way because it does'nt work. I get an Exception org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: entities.Country.organizations, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350) at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97) at org.hibernate.collection.PersistentBag.size(PersistentBag.java:222) at beans.CountryBean.doRefreshWithOrganizations(CountryBean.java:142) Any idea of what to do? Thanks. View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3950283#3950283 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3950283 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Lazy collection load
In order to load a lazy collection of a detached entity I've a method in a
session bean that does the work and returns the same instance of the object but
with the collection loaded
public Country RefreshCountryCollection(Country country)
{
em.merge(country);
country.getChildrenOrganizations();
return country;
}
Is this the rigth way of doing so??? Or there is a better way of doing so?
Thanks in advance!
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[JBoss-user] [EJB 3.0] - EntityManager problem
Hi:
I've two classes like this ones
@Stateless
public abstract class GeneralEntity
{
@PersistenceContext
public EntityManager em;
public String _EntityName;
protected void setEntityName(String str)
{
_EntityName = str;
}
public String getEntityName()
{
return _EntityName;
}
public int size()
{
String strQuery = ;
try
{
Integer intTableSize;
strQuery = SELECT COUNT(record) FROM +
getEntityName() + record;
Query query = em.createQuery(strQuery);
intTableSize = (Integer) query.getSingleResult();
return intTableSize;
}
catch (Exception e)
{
System.out.println(Query executada -- + strQuery);
e.printStackTrace();
}
return 0;
}
public List getAll()
{
try
{
ArrayList list = new ArrayList();
String str = FROM + getEntityName();
Query query = em.createQuery( str );
for ( Object o : query.getResultList() )
{
list.add(o);
}
return list;
}
catch ( Exception e )
{
e.printStackTrace();
}
return null;
}
}
public class CountryBean extends GeneralEntity implements CountryDAO
{
/**
*
*/
private static final long serialVersionUID = 7872740458428627761L;
public CountryBean()
{
this.setEntityName(Country);
}
public Country getByUnitedNationsCode(String id) {
try
{
Country country;
//em is null here no matter what I do...
Query query = em.createQuery(FROM + getEntityName()
+ WHERE _CodiUnitedNations = ?1);
query.setParameter(1, id);
country = (Country) query.getSingleResult();
return country;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
}
the problem is that when in a client I get the a remote interface and I call
the method getAll() from the father class everything goes O.K. Just after that
I make call to the getByUnitedNationsCode(...) method of the child class and
then em (the variable injected with the entity manager) is null.
Should'nt th derived class get the variable filled from the father class
Later on I tried to also put
@PersistenceContext
public EntityManager em;
in the child class and it still does'nt work.
Any one has any idea why is not working .
Thanks in advance.
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[JBoss-user] [EJB 3.0] - Re: EntityManager problem
I also anotate the child with @Stateless. Only that I did'nt put in the text I should have done it! I'll take a look at the link and see wht happends. thanks anyway View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3946186#3946186 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3946186 --- All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnkkid=107521bid=248729dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - ENTITY BEAN WITH SELF RELATIONSHIP
I've been looking around and around for some doc about how to make a Entity Bean with a one to many self relationship. (with a self foreign key). I've found nothing. EMPLOYEE with EMPLOYEE in a Manager OF relationship. Want to be able to locate both direction of the relationship. Anyone can help me please? thanks. View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3944051#3944051 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3944051 --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - WEB - EJB3 Application
Has anyone been able to connect a JSP page under Tomcat 5.5 to EJB3 server 4.0.3 SP1. I've been looking for it around I havent found anything about and it does'nt work. Or at least I don't know how to make it work. Examples welcome! Thanks in advance! View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3940398#3940398 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3940398 --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Tomcat, HTTPD, Servlets JSP] - WEB - EJB3 Application
Has anyone been able to connect a JSP page under Tomcat 5.5 to EJB3 server 4.0.3 SP1. I've been looking for it around I havent found anything about and it does'nt work. Or at least I don't know how to make it work. Examples welcome! Thanks in advance! View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3940399#3940399 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3940399 --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [JBoss Eclipse IDE (users)] - ECLIPSE IDE - @JoinTable problem
Writing an entity bean like this one
@Entity
public class .{
/* some properties */
/* CHILDREN */
private Set setInformationSystemUsers;
@ManyToMany
@JoinTable(name=nn)
public Set getUsers()
{
return setInformationSystemUsers;
}
}
I get an editor error like The attribute name is undefined for the annotation
type @JoinTable.
And trying to get editor's help (ctrl-space bar) I get a message like The
annotation @JoinTable is disallowed for this location.
Does anyone know if this is a bug or that I simply don't know how to write EJB3
entitites? And the sollution... please.
thanks in advance
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[JBoss-user] [JBoss Eclipse IDE (users)] - Re: ECLIPSE IDE - @JoinTable problem
Even though the documentations says another thing put... @JoinTable( table = @Table(name = JOIN_ORG_ISU), joinColumns = [EMAIL PROTECTED](name = Organization_ID_GEN)}, inverseJoinColumns = [EMAIL PROTECTED](name = InformationSystemUser_ID_GEN)} ) Maybe my documentation is not up todate. View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3940139#3940139 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3940139 --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Tomcat, HTTPD, Servlets JSP] - TOMCAT - EJB3 Application problem. URGENT HELP PLEASE!
This is the begining code of our web application in order to access to the EJB
context
Hashtable props = new Hashtable();
props.put(Context.INITIAL_CONTEXT_FACTORY,
org.jnp.interfaces.NamingContextFactory);
props.put(Context.URL_PKG_PREFIXES, org.jboss.naming:org.jnp.interfaces);
props.put(Context.PROVIDER_URL, jnp://localhost:1099);
Context ctx = new InitialContext(props);
if ( ctx != null )
{
System.out.println(We got a context.);
}
Object o = null;
o = ctx.lookup(cat.htmc.bussines.interfaces.CountryDAO);
if ( o instanceof CountryDAO )
{
O.K. if run as a java application code.
null if run under a jsp configuration under TOMCAT.
}
And excerb of the exception that we get is following
RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.net.MalformedURLException: no protocol:
Files/JBOSS/jboss-4.0.3SP1/server/default/tmp/deploy/tmp17339EPSAWebSiteApplication-exp.war/WEB-INF/classes/
2006-04-25 09:18:59,796 INFO [STDOUT] error unmarshalling arguments; nested
exception is:
java.net.MalformedURLException: no protocol:
Files/JBOSS/jboss-4.0.3SP1/server/default/tmp/deploy/tmp17339EPSAWebSiteApplication-exp.war/WEB-INF/classes/
2006-04-25 09:18:59,796 INFO [STDOUT] no protocol:
Files/JBOSS/jboss-4.0.3SP1/server/default/tmp/deploy/tmp17339EPSAWebSiteApplication-exp.war/WEB-INF/classes/
Anyone can give any idea about what to look for
Thanks in advance.
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[JBoss-user] [EJB 3.0] - WEB - EJB3 Application PROBLEM. URGENT HELP PLEASE!
This is the begining code of our web application in order to access to the EJB
context
Hashtable props = new Hashtable();
props.put(Context.INITIAL_CONTEXT_FACTORY,
org.jnp.interfaces.NamingContextFactory);
props.put(Context.URL_PKG_PREFIXES, org.jboss.naming:org.jnp.interfaces);
props.put(Context.PROVIDER_URL, jnp://localhost:1099);
Context ctx = new InitialContext(props);
if ( ctx != null )
{
System.out.println(We got a context.);
}
Object o = null;
o = ctx.lookup(cat.htmc.bussines.interfaces.CountryDAO);
if ( o instanceof CountryDAO )
{
O.K. if run as a java application code.
null if run under a jsp configuration under TOMCAT.
}
And excerb of the exception that we get is following
RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments;
nested exception is:
java.net.MalformedURLException: no protocol:
Files/JBOSS/jboss-4.0.3SP1/server/default/tmp/deploy/tmp17339EPSAWebSiteApplication-exp.war/WEB-INF/classes/
2006-04-25 09:18:59,796 INFO [STDOUT] error unmarshalling arguments; nested
exception is:
java.net.MalformedURLException: no protocol:
Files/JBOSS/jboss-4.0.3SP1/server/default/tmp/deploy/tmp17339EPSAWebSiteApplication-exp.war/WEB-INF/classes/
2006-04-25 09:18:59,796 INFO [STDOUT] no protocol:
Files/JBOSS/jboss-4.0.3SP1/server/default/tmp/deploy/tmp17339EPSAWebSiteApplication-exp.war/WEB-INF/classes/
Anyone can give any idea about what to look for
Thanks in advance.
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[JBoss-user] [EJB 3.0] - PLEASE HELP - TOMCAT - EJB3 Integration problem
I've a project with a piece of JSP code running like this one
WorkerComment
%
try
{
Country country;
ServerObjects so = ServerObjects.getSO();
CountryDAO countries = so.getCountries();
if ( countries != null )
{
List list = countries.getAllCurrent();
Iterator iterator = list.iterator();
while ( iterator.hasNext() )
{
country = (Country)
iterator.next();
%
%
}
}
The problem is that when running this code under a standalone Tomcat instace
the code fails when calling so.getCountries(); which looks for the remote
interface of a server object.
public CountryDAO getCountries()
{
Object o;
try
{
o = server.getConnection().lookup(COUNTRIES_OBJECT);
if ( o != null )
{
System.out.println(o);
if ( o instanceof CountryDAO )
{
return (CountryDAO) o;
}
}
}
catch ( Exception e )
{
e.printStackTrace();
}
return null;
}
The same code executed under a Java Application scenario works well. Gets the
remote interface and everithing is OK.
When fails object o is not instanceof CountryDAO, then returns null.
When goes well object o is (yes, yes) is instanceof CountryDAO, then
proxy object for the server object.
Is there anything between Tomcat and JBoss AS integration that I'm missing
The Application Server is the same. (JBoss AS 4.0.3 SP1).
The Library Class of the ServerObjects class is the same.
The Final code is the same.
Any idea about what's wrong
Thanks in advance.
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[JBoss-user] [EJB 3.0] - Loading a database on @PostConstruct callback for SessionBea
I've a session bean wich on his @PostConstruct callback method tries to load
the database on first time.
The problem is that i'm constantly getting an error of type EntityManager must
be access within a transaction. I've tried to get a user transaction from
the injected session context but I'don't get it working.
this is the code I've
@PostConstruct
public void postConstructCallback()
{
System.out.println(LanguageBean. postConstructCallback().
Started.);
EntityManager manager;
Integer intTableSize;
// EntityTransaction transaction = manager.getTransaction();
//UserTransaction transaction = context.getUserTransaction();
//manager =
emf.createEntityManager(PersistenceContextType.EXTENDED);
try
{
//Query query = manager.createQuery(SELECT
count(language) FROM Language language);
//intTableSize = (Integer) query.getSingleResult();
/*
if ( transaction != null intTableSize == 0 )
{
transaction.begin();
this.loadDatabase(manager);
}
*/
System.out.println(
YYY );
System.out.println( this.getAll().size() );
System.out.println(
YYY );
}
catch (Exception e)
{
/*
try {
transaction.rollback();
} catch (IllegalStateException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (SecurityException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (SystemException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
*/
System.out.println(LanguageBean.
postConstructCallback(). Rollback due to errors.);
e.printStackTrace();
}
finally
{
}
System.out.println(LanguageBean. postConstructCallback(). Ended.);
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[JBoss-user] [EJB 3.0] - SPECIAL CHARACTERS in a String. HELP! newbie question!
I've an EJB3 country bean. One of the attributes is the country's name. And there are countries in the database that have special characters in their names, like Cote d' Ivoire . The problem is that when persisting this country to the database his name looses everything after the ' character. Wich is the correct way of treating this problem? The solution is subtituting ' by '' (2 '). But... because I think EntityManager gets the name from the corresponding method getName(). So... should I make on methos for EntityManager and another method for the application to get the string as it has to be visible in the form or is there another way to handle this?? Thanks in advance!!! View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3930078#3930078 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3930078 --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnkkid=110944bid=241720dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Re: java.sql.Timestamp mapping to Oracle database
instead of has solved the problem without doing anything else. Thanks anyway. View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3925281#3925281 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3925281 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Re: java.sql.Timestamp mapping to Oracle database
property name=hibernate.dialect value=org.hibernate.dialect.Oracle9Dialect instead of property name=hibernate.dialect value=org.hibernate.dialect.OracleDialect has solved the problem without doing anything else. Thanks anyway. View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3925282#3925282 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3925282 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - java.sql.Timestamp mapping to Oracle database
In an EJB 3.0 application... How do I get an Entity with an attribute of type java.sql.Timestamp mapped into an Oracle database as Timestamp(9) instead of as a Date as I'm getting now. Tanks in advance. View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3922960#3922960 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3922960 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
