Merge pull request #1 from k0l0ssus/k0l0ssus-elintro

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k0l0ssus 2016-07-05 00:54:53 -04:00 committed by GitHub
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/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.baeldung.el.controllers;
import java.util.Random;
import javax.annotation.PostConstruct;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.component.html.HtmlInputText;
import javax.faces.context.FacesContext;
/**
*
* @author Tayo
*/
@ManagedBean(name = "ELBean")
@ViewScoped
public class ELSampleBean {
private String firstName;
private String lastName;
private String pageDescription = "This page demos JSF EL Basics";
private int pageCounter;
private Random randomIntGen = new Random();
@PostConstruct
public void init() {
pageCounter = randomIntGen.nextInt();
}
public void save(){
}
public void saveFirstName(String firstName) {
this.firstName = firstName;
}
public void saveByELEvaluation(){
firstName = (String)evaluateEL("#{firstName.value}", String.class);
FacesContext ctx = FacesContext.getCurrentInstance();
FacesMessage theMessage = new FacesMessage("Name component Evaluated: "+firstName);
theMessage.setSeverity(FacesMessage.SEVERITY_INFO);
ctx.addMessage(null,theMessage);
}
private Object evaluateEL(String elExpression, Class<?> clazz) {
Object toReturn = null;
FacesContext ctx = FacesContext.getCurrentInstance();
Application app = ctx.getApplication();
toReturn = app.evaluateExpressionGet(ctx, elExpression, clazz);
return toReturn;
}
/**
* @return the firstName
*/
public String getFirstName() {
return firstName;
}
/**
* @param firstName the firstName to set
*/
public void setFirstName(String firstName) {
this.firstName = firstName;
}
/**
* @return the lastName
*/
public String getLastName() {
return lastName;
}
/**
* @param lastName the lastName to set
*/
public void setLastName(String lastName) {
this.lastName = lastName;
}
/**
* @return the pageDescription
*/
public String getPageDescription() {
return pageDescription;
}
/**
* @param pageDescription the pageDescription to set
*/
public void setPageDescription(String pageDescription) {
this.pageDescription = pageDescription;
}
/**
* @return the pageCounter
*/
public int getPageCounter() {
return pageCounter;
}
/**
* @param pageCounter the pageCounter to set
*/
public void setPageCounter(int pageCounter) {
this.pageCounter = pageCounter;
}
}