Forum:

findcomponent returns null value

Ranch Hand

Posts: 37

posted 10 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Hi,

Can someone please let me know why I get the null for find component? I only get the form01 value which is NOT NULL. rest the component is null.

Please help.

I also tried below, but no luck.

Bean:

public PNReviewHandler() {
		super();
		context = FacesContext.getCurrentInstance();
		delegate = new PNAdminDelegate();
		form01 = (UIForm)context.getViewRoot().findComponent("pnreviewform"); 
//		if(form01 != null){
			reviewpanel = (UIPanel)form01.findComponent("reviewitempanel"); 
			legendpanel = (UIPanel)form01.findComponent("legendpanel"); 
			
			
			msg3output = (UIOutput)form01.findComponent("msg3output");
			updtntpanel = (UICommand)form01.findComponent("updtntpanel");
//			confmsgpanel = (UIPanel)form01.findComponent("confmsgpanel"); 
//			prodlistpanel = (UIPanel)form01.findComponent("prodlistpanel"); 
//			commandbuttonpanel = (UIPanel)form01.findComponent("commandbuttonpanel");
//			nopnitemspanel = (UIPanel)form01.findComponent("nopnitemspanel");
//		}
		
		String empId = "";
		request = (HttpServletRequest)context.getExternalContext().getRequest();
//		response = (HttpServletResponse) context.getExternalContext().getResponse();
		empId = GenericFunctions.checkNullString(request.getParameter("id"));
		if(empId != null && !empId.equals("")){
			this.setEmpNo(empId);  
			HTTPTrafficManager.setObjectInHttpSession(context, "empId", empId);
		}
		System.out.println("EMP ID:"+empId);
	}

JSP:

<f:view>
	<body>
		<h:form id="pnreviewform">
			<table   border="0"  >
				<tr>
					<td>
						<h:outputFormat value="#{bundle.msg1}" escape="false" >
							<f:param value="#{pnReviewHandler.firstName} #{pnReviewHandler.lastName} " />
						</h:outputFormat>
					</td>
				</tr>
				<tr><td>
					<hx:jspPanel id="prodlistpanel">
						<table >
							<tr><td>
								<h:dataTable value="#{pnReviewHandler.scProductsList}" var="prod" border="0" cellpadding="0" cellspacing="0">
									<h:column>
										<h:outputText value="#{prod.description}"  style="font-size : 10pt;" escape="false"/>
									</h:column>
								</h:dataTable>
							</td></tr>
						</table>
					</hx:jspPanel>	
				</td></tr>
				<tr><td>
					<h:outputText value="#{bundle.msg2}" escape="false" />
					<h:outputText value="#{bundle.msg3}" escape="false" id="msg3output"/>
				</td></tr>
			</table>
		
			<table   border="0"  >
				<tr><td>
				<hx:jspPanel id="reviewpanel" >
					<table    >
		   				<tr><td>
		   				
		      					<h:dataTable var="item" value="#{pnReviewHandler.itemReviewList}" border="1" styleClass="pantable" headerClass="callout_hdr" border="0" cellspacing="1" width="95%" columnClasses="pancolAll, pancolAll, pancolAll">
									<h:column>
										<f:facet name="header">
											<h:outputText value="#{bundle.itemid}" />
										</f:facet> 
										<h:outputText value="#{item.itemId}"   />		  
									</h:column>
									<h:column>
										<f:facet name="header">
												  	<h:outputText value="#{bundle.reviewstatus}" />
										</f:facet> 
										<h:selectOneRadio id="docStatus" value="#{pnReviewHandler.docStatus}" layout="pageDirection">
											<f:selectItems value="#{pnReviewHandler.docStatusList}" />
										</h:selectOneRadio>
									</h:column>
									<h:column>
										<f:facet name="header">
											<h:outputText value="#{bundle.pnemailtext}" />
										</f:facet> 
										<h:outputText value="#{bundle.dottedline}" escape="false"/>
										<h:outputText value="#{bundle.fordproducts}" escape="false"/>
										<h:dataTable value="#{item.versionNameList}" var="vername" border="0" style="margin-left:20px;">
											<h:column>
												<h:outputText value="#{vername.name}   #{vername.build}" />
											</h:column>
										</h:dataTable>
										<h:outputText value="<p>" escape="false"  />
										<h:outputText value="#{item.docTypeDesc}: #{item.docSiebelDesc} </p>" escape="false"/>
										
										<h:outputText value="#{bundle.filepathhelp}"/>
										
										<h:dataTable value="#{item.filePathList}" var="filepath" border="0" style="margin-left:20px;">
											<h:column>
												<h:outputLink value="#{filepath.name}"><h:outputText value="#{filepath.value}" />
												</h:outputLink>
											</h:column>
										</h:dataTable>
										<h:outputText value="#{bundle.dottedline} <p>" escape="false" />
										<h:outputText value="#{bundle.rejectwarning}" escape="false"/>
										<h:inputText id="rejectreasonId" maxlength="256" size="100" value="#{pnReviewHandler.reason4Rejection}" >
											
										</h:inputText>
									</h:column>
								</h:dataTable>
						</td></tr>
						<tr><td>
						<h:commandButton id="updtntpanel" value="#{bundle.updtnotfnsts}" type="submit" action="#{pnReviewHandler.updateNotificationStatus}"/>
						</td></tr>
					</table>
				</hx:jspPanel>		
:
:
:

Tim Holloway

Saloon Keeper

Posts: 25653

183

I like...

posted 10 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Well, I'd have to RTFM to be sure, but I don't think you can code a complex component ID into findComponent. I think you have to do a findComponent on pnreviewform, then run a findComponent on that to get msg3output.

Although in most cases, it's probably going to be easier to just bind the msg3output control straight to the backing bean using the "binding=" attribute.

Just because I take people to task here for overusing bindings doesn't mean that binding is useless. It just has its place, that's all.

Incidentally, my own personal recommendation is to avoid using raw HTML in JSF view definitions. You can use the panelGrid control in place of the raw table definitions. Same end result, but more JSF-friendly.

Sometimes the only way things ever got fixed is because people became uncomfortable.

pie. tiny ad:

Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop

https://coderanch.com/wiki/718759/books/Building-World-Backyard-Paul-Wheaton