Hi,
I'm having an Entity class which contains Date objects, say
(excuse me, I'm too lazy to translate all the names ;-)
| @Entity
| @Name("vertrag")
| @Scope(SESSION)
| public class Vertrag implements Serializable {
| ...
| private Date _vertragsBeginn;
|
| @Basic
| @Temporal(TemporalType.DATE)
| public Date getVertragsBeginn() {
| return _vertragsBeginn;
| }
|
| public void setVertragsBeginn(Date vertragsBeginn) {
| _vertragsBeginn = vertragsBeginn;
| }
| ....
| }
Now I'd like to fill in a form and set the values of that entity:
| <c:view>
| <h:form>
| <table border="0">
| <tr>
| <td>Vertragsbeginn:</td>
| <td><h:inputText
value="#{vertrag.vertragsBeginn}">
| <f:convertDateTime type="date"
pattern="dd.MM.yyyy"/>
| </h:inputText>
| </td>
| </tr>
| </table>
|
| <FONT color="RED"> <h:messages /> </FONT>
|
| <h:commandButton type="submit" value="Anlegen"
| action="#{registerVertrag.register}" />
| </h:form>
| </c:view>
|
|
I got a bean to do it all:
| @Stateless
| @Name("registerVertrag")
| @Interceptors(SeamInterceptor.class)
| public class RegisterVertragActionBean implements RegisterVertragAction {
| private static final Category _logger =
Logger.getInstance(RegisterVertragActionBean.class);
|
| @In(value = "vertrag")
| @Out(value = "vertrag", required = false)
| @Valid
| private Vertrag _vertrag;
|
| @PersistenceContext
| private EntityManager _em;
|
| @IfInvalid(outcome = Outcome.REDISPLAY)
| public String register() {
| _em.persist(_vertrag);
| _vertrag = null;
| return "success";
| }
| }
|
Looks fine so far for me. However it does seem to me that Hibernate,
Seam or
JSF MyFaces does not recognize that the property "vertragsBeginn" is
a date and tries to set is a a string:
| 15:00:27,906 ERROR [[/iv]] Cannot set value for expression
'#{vertrag.vertragsBeginn}' to a new value of type java.lang.String
| javax.faces.el.EvaluationException: Cannot set value for expression
'#{vertrag.vertragsBeginn}' to a new value of type java.lang.String
| at
org.apache.myfaces.el.ValueBindingImpl.setValue(ValueBindingImpl.java:304)
| at javax.faces.component.UIInput.updateModel(UIInput.java:226)
| at javax.faces.component.UIInput.processUpdates(UIInput.java:165)
| at javax.faces.component.UIForm.processUpdates(UIForm.java:85)
| at
javax.faces.component.UIComponentBase.processUpdates(UIComponentBase.java:428)
| at javax.faces.component.UIViewRoot.processUpdates(UIViewRoot.java:153)
| at
org.apache.myfaces.lifecycle.LifecycleImpl.updateModelValues(LifecycleImpl.java:277)
| at
org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:81)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
| at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
| at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
| at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:595)
| Caused by: javax.faces.el.EvaluationException: de.kvbb.ingver.model.Vertrag
| at
org.apache.myfaces.el.PropertyResolverImpl.setValue(PropertyResolverImpl.java:155)
| at
org.apache.myfaces.el.ValueBindingImpl.setValue(ValueBindingImpl.java:269)
| ... 27 more
| Caused by: javax.faces.el.EvaluationException: Bean:
de.kvbb.ingver.model.Vertrag, property: vertragsBeginn
| at
org.apache.myfaces.el.PropertyResolverImpl.setProperty(PropertyResolverImpl.java:372)
| at
org.apache.myfaces.el.PropertyResolverImpl.setValue(PropertyResolverImpl.java:148)
| ... 28 more
| Caused by: java.lang.IllegalArgumentException: argument type mismatch
| 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.setProperty(PropertyResolverImpl.java:368)
|
What can I do to ensure that the value is converted to a date given
the specified format ("dd.MM.yyyy"). I didn't find a Hibernate tag for
this purpose (Struts did have this, never mind :-)
BTW: I'd like to use the validators/setters for other kind of objects, too.
Even, if I have to write my own validator for that. Quite simple thanks
to Hibernate...
Thanks in advance
Markus
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