PropertyNotFound exception when I link to another page
Hello I am getting an error when I click a s:link component that links to a maintenance page.
I don't understand where the error may be, so any help will be welcomed. I am attaching all the information I think is necessary, but if you need anything else just ask me, this is just a toy project I am doing in order to learn how to use JBoss Seam.
Here is the ItemSearch.xthml code that launches the action:
<h:column>
<f:facet name="header">
Code
</f:facet>
<s:link value="#{item.itemCode}" id="editItem" view="/maintenance/ItemMaintenance.xhtml">
<f:param name="itemId" value="#{item.id}" />
</s:link>
</h:column>
This is the source of the ItemHome.java file
package sm.action.home;
import org.hibernate.validator.InvalidStateException;
import org.hibernate.validator.InvalidValue;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.framework.EntityHome;
import org.jboss.seam.framework.EntityNotFoundException;
import org.jboss.seam.log.Log;
import sm.model.entities.Item;
@Name("itemHome")
public class ItemHome extends EntityHome<Item>
{
private static final long serialVersionUID = -3313501824840400038L;
@Logger
Log log;
@Override
protected Item createInstance()
{
log.info("Creando Instancia");
Item item = new Item();
return item;
}
public void setItemId(Long id)
{
setId(id);
}
public Long getItemid()
{
return (Long) getId();
}
public void wire()
{
getInstance();
}
public boolean isWired()
{
return true;
}
public Item getDefinedInstance()
{
return isIdDefined() ? getInstance() : null;
}
@Override
public String persist()
{
try
{
return super.persist();
}
catch (InvalidStateException ise)
{
for (InvalidValue iv : ise.getInvalidValues())
{
log.info("Propiedad #0 :: ToString= #1", iv.getPropertyName(), iv.toString());
}
log.info(ise);
}
catch (Exception ex)
{
log.warn("Excepción no contemplada");
log.info(ex);
log.info(ex.getStackTrace());
}
return "";
}
@Override
public String update()
{
try
{
return super.persist();
}
catch (InvalidStateException ise)
{
for (InvalidValue iv : ise.getInvalidValues())
log.info("Propiedad #0 ;; ToString= #1", iv.getPropertyName(), iv.toString());
log.info(ise);
}
catch (Exception ex)
{
log.warn("Excepción no contemplada");
log.info(ex);
log.info(ex.getStackTrace());
}
return "";
}
public String loadEntity()
{
log.info("entró al método loadEntity()");
Long id = getItemid();
String result = "valid";
if (id != null)
{
try
{
this.getInstance();
if (!isManaged()) result = "invalid";
}
catch (EntityNotFoundException e)
{
result = "invalid";
}
}
log.info("Se terminó de ejecutar loadEntity()");
return result;
}
}
This is the page.xml for ItemMaintenance
<?xml version="1.0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd">
<param name="itemId" value="#{itemHome.itemId}"/>
<action execute="#{itemHome.loadEntity}" />
<navigation from-action="#{itemHome.loadEntity}">
<rule if-outcome="invalid">
<redirect view-id="/maintenance/ItemSearch.xhtml">
<message severity="WARN">
The item you requested does not exist.
</message>
</redirect>
</rule>
</navigation>
<navigation from-action="#{itemHome.persist}">
<end-conversation />
<redirect view-id="/maintenance/ItemSearch.xhtml" />
</navigation>
<navigation from-action="#{itemHome.update}">
<end-conversation />
<redirect view-id="/maintenance/ItemSearch.xhtml" />
</navigation>
<navigation from-action="#{itemHome.remove}">
<end-conversation />
<redirect view-id="/maintenance/ItemSearch.xhtml" />
</navigation>
</page>This is the code for the property in Item.java
@Entity
@Name("item")
@Table(name = "item", schema = AppConst.defaultSchema, uniqueConstraints = { @UniqueConstraint(columnNames = "item_code") })
public class Item
{
private Long id;
private String itemCode;
private String itemName;
private String itemDesc;
private Integer amount;
@Embedded
private AuditFields auditFields;
@Logger
Log log;
@Id
@GeneratedValue(generator = "item_id", strategy = GenerationType.SEQUENCE)
@SequenceGenerator(name = "item_id", sequenceName = AppConst.defaultSchema + ".item_item_id_seq", allocationSize = 0)
@Column(name = "item_id")
@NotNull
public Long getId()
{
return id;
}
public void setId(Long id)
{
this.id = id;
}
// More Code
}
and finally this is the stack trace:
01:11:14,312 ERROR [STDERR] 27/10/2008 01:11:14 AM com.sun.facelets.FaceletViewHandler handleRenderException GRAVE: Error Rendering View[/maintenance/ItemMaintenance.xhtml] javax.el.PropertyNotFoundException: Property 'itemId' not readable on type java.lang.Long at javax.el.BeanELResolver$BeanProperty.read(BeanELResolver.java:259) at javax.el.BeanELResolver$BeanProperty.access$000(BeanELResolver.java:209) at javax.el.BeanELResolver.getValue(BeanELResolver.java:60) at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53) at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64) at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53) at org.jboss.el.parser.AstValue.getValue(AstValue.java:67) at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) at org.jboss.seam.core.Expressions$1.getValue(Expressions.java:111) at org.jboss.seam.navigation.Param.getStringValueFromModel(Param.java:133) at org.jboss.seam.navigation.Pages.updateStringValuesInPageContextUsingModel(Pages.java:837) at org.jboss.seam.jsf.SeamStateManager.saveSerializedView(SeamStateManager.java:61) at org.ajax4jsf.application.AjaxStateManager.saveSerializedView(AjaxStateManager.java:317) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:615) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Thread.java:595)