pt.ua.ies.ControllerView.java Source code

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Here is the source code for pt.ua.ies.ControllerView.java

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/*
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package pt.ua.ies;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.bean.SessionScoped;
import javax.faces.bean.ViewScoped;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletRequest;

/**
 *
 * @author ASUS
 */
@ManagedBean
@SessionScoped
public class ControllerView implements DisplayMessage {
    private String recive;
    private String reciveBeforeRefresh;

    private Connection connection;

    @PostConstruct
    public void init() {
        System.out.println("init");
        recive = "";
        reciveBeforeRefresh = recive;
        try {
            ConnectionFactory factory = new ConnectionFactory();
            factory.setHost("localhost");

            connection = factory.newConnection();
            Channel channel = connection.createChannel();

            channel.exchangeDeclare(DisplayMessage.EXCHANGE_NAME, "fanout");
            String queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, DisplayMessage.EXCHANGE_NAME, "");

            MessageConsumer m = new MessageConsumer(channel, this);

            channel.basicConsume(queueName, true, m);
        } catch (Exception ex) {
            Logger.getLogger(ControllerView.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @PreDestroy
    public void close() {
        try {
            System.out.println("Close connection");
            if (!connection.isOpen())
                connection.close();
        } catch (IOException ex) {
            Logger.getLogger(ControllerView.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    public void display(String message) {
        recive = message;
        System.out.println("Consume " + message);
    }

    public void refresh() {
        System.out.println("- ----  DO REFRESH ----- ");
        // only refresh if value is old
        if (!reciveBeforeRefresh.equals(recive))
            try {
                // refresh page
                ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
                ec.redirect(((HttpServletRequest) ec.getRequest()).getRequestURI());

                reciveBeforeRefresh = recive;
            } catch (IOException ex) {
                Logger.getLogger(ControllerView.class.getName()).log(Level.SEVERE, null, ex);
            }

    }

    public String getRecive() {
        return recive;
    }

    public void setRecive(String recive) {
        this.recive = recive;
    }

}