I tried to go through all possible set of questions posted earlier here such as :
@ViewScoped creating new instance on every postback
@ViewScoped calls @PostConstruct on every postback request
As per the suggestions provided there I have tried to apply all set of solutions still its creating a new instance and calling the init(@postConstruct) method every time.
Below are my configurations and version details:
JSF2.1.19
<bean id="connectDashBoardBean" class="com.xyz.ConnectDashBoardBean" scope="view"/>
XHTML:
<h:commandLink id="skills" action="#{connectDashBoardBean.navigateToSkills}"
title="Click To View" class="#{connectDashBoardBean.skillsUpdateFlg ? 'favMenuSelected':'favMenu'}">
<div id="skill" class="favContentHead">
<div class="favContentHeadImg">
<h:graphicImage value="/test/skills.png" height="20" width="20" />
</div>
<div class="favContentHeadText">
<h:outputText value="Skills" />
</div>
<div class="favContentHeadUpdate">
<h:outputText value="1B+" />
</div>
</div>
<f:ajax render="west center" execute="skills" />
</h:commandLink>
In all my xhtml I am not using any JSTL tag , I am using <ui:include/>
I have changed in my web.xml as below as well:
<context-param>
<description>STATE Saving disabled</description>
<param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
<param-value>false</param-value>
</context-param>
or
<context-param>
<description>STATE Saving disabled</description>
<param-name>javax.faces.FULL_STATE_SAVING_VIEW_IDS</param-name>
<param-value>/connectDashBoard.xhtml,/connectDashBoard_Body.xhtml</param-value>
</context-param>
@PostConstruct
public void prePopulate() {
FacesContext facesContext = FacesContext.getCurrentInstance();
this.sessonKey = facesContext.getExternalContext().getRequestParameterMap().get("sessionKey");
LOG.debug("request---->{}",sessonKey);
if(!intialLoading){
users.add("Jayaram");
createPieModel();//TODO populate the chart details latter
name = "Jayaram Pradhan";
newsUpdateFlg = Boolean.TRUE;
}
LOG.debug("Key Properly Getting passed--->{}",sessonKey);
}
web.xml:
<context-param>
<description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<context-param>
<description>STATE Saving disabled</description>
<param-name>javax.faces.FULL_STATE_SAVING_VIEW_IDS</param-name>
<param-value>/connectDashBoard.xhtml,/connectDashBoard_Body.xhtml</param-value>
</context-param>
<context-param>
<description>STATE Saving disabled</description>
<param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.INTERPRET_STRING_SUBMITTED_VALUE_AS_NULL</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
<param-value>resources.application</param-value>
</context-param>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<filter>
<filter-name>gzipResponseFilter</filter-name>
<filter-class>org.omnifaces.filter.GzipResponseFilter</filter-class>
<init-param>
<description>
The threshold size in bytes. Must be a number between 0 and 9999. Defaults to 500.
</description>
<param-name>threshold</param-name>
<param-value>150</param-value>
</init-param>
<init-param>
<description>
The mimetypes which needs to be compressed. Must be a commaseparated string. Defaults to the below values.
</description>
<param-name>mimetypes</param-name>
<param-value>
text/plain, text/html, text/xml, text/css, text/javascript, text/csv, text/rtf,
application/xml, application/xhtml+xml, application/javascript, application/json
</param-value>
</init-param>
XHTML:
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:sf="http://www.springframework.org/tags/faces"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:c="http://java.sun.com/jsp/jstl/core"
template="/templates/common_layout.xhtml">
<ui:define name="body">
<h:form id="dashBoard" onsubmit="saveScrollPos()" prependId="false">
<h:inputHidden id="scrollPos" />
<ui:remove>
<ui:include src="/templates/connectHome_Banner.xhtml" />
<ui:include src="connectDashBoard_Body.xhtml" />
</ui:remove>
<h:commandLink id="skills" actionListener="#{connectDashBoardBean.navigateToSkills}"
title="Click To View" class="#{connectDashBoardBean.skillsUpdateFlg ? 'favMenuSelected':'favMenu'}">
<div id="skill" class="favContentHead">
<div class="favContentHeadImg">
<h:graphicImage value="/test/skills.png" height="20" width="20" />
</div>
<div class="favContentHeadText">
<h:outputText value="Skills" />
</div>
<div class="favContentHeadUpdate">
<h:outputText value="1B+" />
</div>
</div>
<f:ajax render="skills" execute="skills" />
</h:commandLink>
</h:form>
</ui:define>
</ui:composition>
Managed Bean:
public class ConnectDashBoardBean implements CommonInterface {
private static final long serialVersionUID = 8648865830621770920L;
protected static final Logger LOG = LoggerFactory.getLogger(ConnectDashBoardBean.class);
public ConnectDashBoardBean() {
super();
LOG.debug("Instance of {}, created--->", this.getClass());
connectActivities = new ArrayList<ConnectActivity>(0);
users = new ArrayList<String>(0);
}
private List<ConnectActivity> connectActivities;
private String name;// TODO this can be move to current user
private boolean intialLoading;
private boolean refreshRequiredFlag;
private boolean loadNextSetFlag;
private int loadCount;
private String sessonKey;
private PieChartModel pieModel;
private List<String> users;
private boolean newsUpdateFlg;
private boolean skillsUpdateFlg;
/**
* <p>
* This will load all the deatils used by user
*
* @param expenseName
* @param emailOrPhone
* @param shareUserList
*/
@PostConstruct
public void prePopulate() {
FacesContext facesContext = FacesContext.getCurrentInstance();
this.sessonKey = facesContext.getExternalContext().getRequestParameterMap().get("sessionKey");
LOG.debug("request---->{}",sessonKey);
if(!intialLoading){
users.add("Jayaram");
users.add("Chandan");
users.add("Maynak");
users.add("Madhusmita");
createPieModel();//TODO populate the chart details latter
name = "Jayaram Pradhan";
newsUpdateFlg = Boolean.TRUE;
}
LOG.debug("Key Properly Getting passed--->{}",sessonKey);
}
}
Additional Configurations For Spring way of managing life cycle:
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="view">
<bean class="com.xyz.custom.scope.ViewScope" />
</entry>
<entry key="threadLocal">
<bean class="com.xyz.custom.scope.ThreadScope"/>
</entry>
</map>
</property>
</bean>
public class ViewScope implements Scope {
@Override
public Object get(String name, ObjectFactory<?> objectFactory) {
if (FacesContext.getCurrentInstance().getViewRoot() != null) {
Map<String, Object> viewMap = FacesContext.getCurrentInstance().getViewRoot().getViewMap();
if (viewMap.containsKey(name)) {
return viewMap.get(name);
} else {
Object object = objectFactory.getObject();
viewMap.put(name, object);
return object;
}
} else {
return null;
}
}
@Override
public Object remove(String name) {
if (FacesContext.getCurrentInstance().getViewRoot() != null) {
return FacesContext.getCurrentInstance().getViewRoot().getViewMap().remove(name);
} else {
return null;
}
}
@Override
public void registerDestructionCallback(String name, Runnable callback) {
// Do nothing
}
@Override
public Object resolveContextualObject(String key) {
return null;
}
@Override
public String getConversationId() {
return null;
}
}
I would Like to understand, is there any way, that I can overcome making this call every time and creating a new instance?
I created this new question as seems other similar questions are already a long ago.
Thanks.
