[JBoss-user] [JBoss Seam] - [LazyInitializationException] could not initialize proxy - t
Hi all,
I'm getting the above error while trying to show entities with lazy-loaded
properties.
I have a SLSB in which I retrieve an Entity from the Database.
The EntityBean is as follow:
| public class Walzen implements java.io.Serializable {
| .
| .
| .
| private Werkstoffe werkstoffe;
| .
| .
| .
| @ManyToOne(cascade={},
| fetch=FetchType.LAZY)
|
| @JoinColumn(name=WERKSTOFF, unique=false, nullable=false,
insertable=true, updatable=true)
|
| public Werkstoffe getWerkstoffe() {
| return this.werkstoffe;
| }
| .
| .
| .
| }
|
where Werkstoffe is also an EntityBean:
| @Entity
| @Table(name=WERKSTOFFE
| , uniqueConstraints = { }
| )
|
| public class Werkstoffe implements java.io.Serializable {
| .
| .
| .
|
| @Column(name=NAME, unique=false, nullable=false, insertable=true,
updatable=true)
|
| public String getName() {
| return this.name;
| }
| .
| .
| .
| }
|
|
In my SessionBean I do a simple select w from Walzen in a @Factory-Method.
As I try to show the name-Attribute in the JSP like:
| f:view
| t:dataTable id=walzen var=walze value=#{walzenliste}
| t:column
| h:outputLabel value=#{walze.hydronummer}
| /h:outputLabel
| /t:column
| t:column
| h:outputLabel value=#{walze.werkstoffe.name}
| /h:outputLabel
| /t:column
| /t:dataTable
|
|
| /f:view
|
I get the above Error.
| 12:27:17,532 ERROR [LazyInitializationException] could not initialize proxy
- the owning Session was closed
| org.hibernate.LazyInitializationException: could not initialize proxy - the
owning Session was closed
| at
org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:60)
| at
org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
| at
org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:196)
| at
de.hydro.gv.walzen.entities.Werkstoffe_$$_javassist_183.getName(Werkstoffe_$$_javassist_183.java)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at
org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438)
| at
org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:82)
| at
org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:532)
| at
org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
| at
org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:383)
| at javax.faces.component.UIOutput.getValue(UIOutput.java:77)
| at
org.apache.myfaces.shared_impl.renderkit.RendererUtils.getStringValue(RendererUtils.java:217)
| at
org.apache.myfaces.renderkit.html.HtmlLabelRenderer.encodeBegin(HtmlLabelRenderer.java:78)
| at
javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:512)
| at
org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:433)
| at
org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChildren(RendererUtils.java:419)
| at
org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:440)
| at
org.apache.myfaces.renderkit.html.ext.HtmlTableRenderer.renderColumnBody(HtmlTableRenderer.java:286)
| at
org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlTableRendererBase.encodeColumnChild(HtmlTableRendererBase.java:181)
| at
org.apache.myfaces.renderkit.html.ext.HtmlTableRenderer.encodeColumnChild(HtmlTableRenderer.java:241)
| at
org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:167)
| at
org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:100)
| at
org.apache.myfaces.renderkit.html.ext.HtmlTableRenderer.encodeChildren(HtmlTableRenderer.java:113)
| at
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:524)
| at
javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:480)
| at
javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:361)
| at
org.apache.myfaces.shared_tomahawk.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:54)
|
[JBoss-user] [JBoss Seam] - LazyInitializationException
As you can see I'm having a LazyInitializationException error that I can't seem
to fix.
First of all this stuff worked before just fine a couple months ago, the only
thing changed is that I now use jBPM pageflow
Here is a piece of my faces.config
| lifecycle
|
!--phase-listenerorg.jboss.seam.jsf.SeamPhaseListener/phase-listener--
|
!--phase-listenerorg.jboss.seam.jsf.SeamTransactionManagedPersistencePhaseListener/phase-listener--
|
phase-listenerorg.jboss.seam.jsf.SeamExtendedManagedPersistencePhaseListener/phase-listener
| /lifecycle
|
Here is the web.xml
| filter
| filter-nameSeam Exception Filter/filter-name
|
filter-classorg.jboss.seam.servlet.SeamExceptionFilter/filter-class
| /filter
|
| filter
| filter-nameSeam Redirect Filter/filter-name
|
filter-classorg.jboss.seam.servlet.SeamRedirectFilter/filter-class
| /filter
|
| filter-mapping
| filter-nameSeam Exception Filter/filter-name
| url-pattern/*/url-pattern
| /filter-mapping
|
| filter-mapping
| filter-nameSeam Redirect Filter/filter-name
| url-pattern*.seam/url-pattern
| /filter-mapping
|
My statefullbean
| @Stateful
| @Name(accountsManager)
| @Scope(ScopeType.CONVERSATION)
| @Conversational(ifNotBegunOutcome=home_page)
| public class AccountsServiceBean implements AccountsService, Serializable {
|
| private static final Logger log =
Logger.getLogger(AccountsServiceBean.class);
|
| @PersistenceContext(type=PersistenceContextType.EXTENDED)
| private EntityManager em;
|
| @DataModel(scope=ScopeType.PAGE)
| private ListAccount accounts;
| @DataModelSelectionIndex
| private int accountIndex;
|
| @Out(required=false, scope=ScopeType.PAGE)
| private Account bookAccount;
|
| private boolean lookupMode;
|
| public boolean isLookupMode() {
| return lookupMode;
| }
|
| private void setLookupMode(boolean lookupMode) {
| this.lookupMode = lookupMode;
| }
|
| public Account getAccount() {
| return bookAccount;
| }
|
| @Create
| public void create() {
| log.info(created);
| }
|
| //@Begin(join=true)
| @Factory(accounts)
| @SuppressWarnings(unchecked)
| public void load() {
| accounts = em.createQuery(from Account a +
| where a.number between 1 and 7)
| .getResultList();
| }
|
| public void find(){
| setLookupMode(true);
| load();
| }
|
| public void getChilderen() {
| bookAccount = accounts.get(accountIndex);
| accounts = ((SummaryAccount)bookAccount).getChildAccounts();
| }
|
| public void addNew() {
|
| }
|
| public void delete() {
|
| }
|
| @Begin(nested=true)
| public String lookup() {
| setLookupMode(true);
| find();
| return accounts_page;
| }
|
| @End
| public void select() {
| setLookupMode(false);
| bookAccount = accounts.get(accountIndex);
| }
|
| @Destroy
| public void destroy() {
| log.info(destroyed);
| }
|
Stacktrace...
| 15:11:38,413 ERROR [LazyInitializationException] failed to lazily
initialize a collection of role:
be.drapier.domain.SummaryAccount.childAccounts, no session or session was closed
| org.hibernate.LazyInitializationException: failed to lazily initialize a
collection of role: be.drapier.domain.SummaryAccount.childAccounts, 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 javax.faces.model.ListDataModel.isRowAvailable(ListDataModel.java:82)
| at javax.faces.model.ListDataModel.setRowIndex(ListDataModel.java:95)
| at
javax.faces.model.ListDataModel.setWrappedData(ListDataModel.java:109)
| at javax.faces.model.ListDataModel.init(ListDataModel.java:40)
| at org.jboss.seam.jsf.ListDataModel.init(ListDataModel.java:31)
| at org.jboss.seam.Component.outjectDataModelList(Component.java:847)
| at org.jboss.seam.Component.outjectDataModel(Component.java:829)
| at
[JBoss-user] [JBoss Seam] - LazyInitializationException with SeamExtendedManagedPersiste
Hi, I still get the dreaded LazyInitializationException although I'm using the SeamExtendedManagedPersistencePhaseListener. My entity manager is bound to the jndi context, I can query an EJB3 entity with it, but when I try to navigate down a OneToMany relationship I get anonymous wrote : | [LazyInitializationException] failed to lazily initialize a collection of role: ..., no session or session was closed | My setting is similar to your generated code: From a JSF List page I call a SFSB (List Bean) method which is annoted with @Begin and delegates handling to another SFSB (Editor/Show Bean). The rendering JSF View then asks for the Set with the many end of the relation. The getter is annoted as a @DataModel. But from that method I get the error mentioned above. What could be wrong? Greetings, Stefan View the original post : http://www.jboss.com/index.html?module=bbop=viewtopicp=3920127#3920127 Reply to the post : http://www.jboss.com/index.html?module=bbop=postingmode=replyp=3920127 --- 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
