Java EE (Java Enterprise Edition) General Discussion

Hai,

we created dynamic drop down menu using jsf with rich faces.
In this jsf,

<rich:dropDownMenu binding="#{MenuLists.master}">
            </rich:dropDownMenu>

in java,

public HtmlDropDownMenu getMaster() {
		System.out.println("inside getMaster");
		try
		{
			if(master==null)
			{
			master = new HtmlDropDownMenu();
		    //menu.setStyle("border:1px solid #BCD1FF");
			master.setValue("Master");	
		    session1=HibernateSessionFactory.getSession();
		    Query query = session1.createQuery("select amod.moduleMasterName from  " +
			" AdmModuleMaster amod,AdmCategoryMaster acat where acat.categoryName='Master' " +
			"and amod.admCategoryMaster=acat");
			System.out.println("query"+query);
			
			List modList=(List) query.list();
			
			for(int i=0;i<modList.size();i++)
			{
				HtmlMenuGroup oHtmlMenuGroup=new HtmlMenuGroup();
				//Menugroup name from databse
				oHtmlMenuGroup.setValue(modList.get(i));
				Query query1 = session1.createQuery("select adfn.functionMasterName,admofn.moduleJspName from  " +
				" AdmModuleMaster amod,AdmFunctionMaster adfn,AdmModuleFunctionMaster admofn where amod.moduleMasterName='"+modList.get(i)+"' " +
						"and admofn.admFunctionMaster=adfn and admofn.admModuleMaster=amod");
				System.out.println("query"+query);				
				//List fnList=(List) query.list();				
				//for(int j=0;i<fnList.size();j++)
				for (Iterator<?> iter = query1.iterate();iter.hasNext();)
				{
				Object[] row = (Object[])iter.next();
				HtmlMenuItem menuItem = new HtmlMenuItem();
				//Menuitem name from databse
			    menuItem.setValue((String)row[0]);
			    menuItem.setSubmitMode("none");
			  //While click this item it will call another page.That page name taken from database
			    menuItem.setOnclick("document.location.href='"+(String)row[1]+"'");
			    oHtmlMenuGroup.getChildren().add(menuItem);
				}
			    master.getChildren().add(oHtmlMenuGroup);
			} 	
			}
		   
		}
		catch (Exception e) {
			System.out.println("Exception .."+e);
		}
		finally
		{
		return master;
		}
	}

In faces config,

<managed-bean>
        <managed-bean-name>MenuLists</managed-bean-name>
        <managed-bean-class>com.erp.admin.MenuLists</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>

It displayed drop down menu,.
If we click menu item it will forward correponding page.
After forwared, if we call any action in that forwared page, it shows the following Exception,

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exception

javax.servlet.ServletException: /header.jsp(111,12) '#{MenuLists.master}' {0} object is read only base com.erp.admin.MenuLists@7ec736 property master
javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:154)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:260)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:366)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:493)
com.erp.listener.ResponseFilter.doFilter(ResponseFilter.java:67)
com.erp.listener.SessionExpiredFilter.doFilter(SessionExpiredFilter.java:171)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)


root cause

org.apache.jasper.el.JspPropertyNotWritableException: /header.jsp(111,12) '#{MenuLists.master}' {0} object is read only base com.erp.admin.MenuLists@7ec736 property master
org.apache.jasper.el.JspValueExpression.setValue(JspValueExpression.java:88)
com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:240)
com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:245)
com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:245)
com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:245)
com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:245)
com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:195)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:104)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:154)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:260)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:366)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:493)
com.erp.listener.ResponseFilter.doFilter(ResponseFilter.java:67)
com.erp.listener.SessionExpiredFilter.doFilter(SessionExpiredFilter.java:171)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

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