JSF View scope in Spring
Is there any scope like JSF @ViewScoped
in Spring 3.0? I have an application using JSF+Spring where backing beans are managed by Spring. I didn't find any scope like JSF wiew scope in Spring. I saw the blog Porting JSF 2.0’s ViewScope to Spring 3.0, but it didn't work for me.
Here's my attempt on the custom Spring scope:
import java.util.Map;
import javax.faces.context.FacesContext;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.config.Scope;
/**
* Implements the JSF View Scope for use by Spring. This class is registered as a Spring bean with the CustomScopeConfigurer.
*/
public class ViewScope implements Scope {
public Object get(String name, ObjectFactory<?> objectFactory) {
System.out.println("**************************************************");
System.out.println("-------------------- Getting objects For View Scope ----------");
System.out.println("**************************************************");
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;
}
}
public Object remove(String name) {
System.out.println("**************************************************");
System.out.println("-------------------- View Scope object Removed ----------");
System.out.println("**************************************************");
if (FacesContext.getCurrentInstance().getViewRoot() != null) {
return FacesContext.getCurrentInstance().getViewRoot().getViewMap().remove(name);
} else {
return null;
}
}
public void registerDestructionCallback(String name, Runnable callback) {
// Do nothing
}
public Object resolveContextualObject(String key) { return null;
}
public String getConversationId() {
return null;
}
}
application-context.xml
:
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="view">
<bean class="com.delta.beans.ViewScope"/>
</entry>
</map>
</property>
</bean>
Recently I've created maven artifact which will solve this problem.
See my github javaplugs/spring-jsf repository.
I did something like this without Porting bean to Spring. It's working for me.
@ManagedBean(name="bean")
@ViewScoped // actual jsf viewscoped only with javax.faces.viewscoped import
public class Bean implements
Serializable {
@ManagedProperty(value="#{appService}") // Spring Manged Bean and singleton
private transient AppService appService;
// Getting AppService Object which is singleton in the application during deserialization
private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
stream.defaultReadObject();
FacesContext context = FacesContext.getCurrentInstance();
appService = (AppService)context.getApplication()
.evaluateExpressionGet(context, "#{appService}", AppService.class);
}
}