org.hbrs.nosql.mongoweb.gui.views.UseCase2.java Source code

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Here is the source code for org.hbrs.nosql.mongoweb.gui.views.UseCase2.java

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package org.hbrs.nosql.mongoweb.gui.views;

import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener;
import com.vaadin.ui.Button;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
import org.hbrs.nosql.mongoweb.db.MongoDBConnector;
import org.hbrs.nosql.mongoweb.gui.components.TopPanel;

import java.time.Duration;
import java.time.LocalTime;
import java.util.List;

import org.hbrs.nosql.mongoweb.model.UseCase;

/**
 * @author Franz
 */
public class UseCase2 extends AbstractUseCase {
    @Override
    protected void setUp() {
        //MongoDB Connector
        MongoDBConnector mongo = new MongoDBConnector();

        VerticalLayout uc2 = new VerticalLayout();

        Button button = new Button("Professoren suchen");

        button.addClickListener(e -> {
            uc2.removeAllComponents();

            LocalTime t1 = LocalTime.now();

            // load list with values
            List uc2answer = mongo.getQuery2();

            LocalTime t2 = LocalTime.now();
            Duration elapsed = Duration.between(t1, t2);

            // query over list
            for (int i = 0; i < uc2answer.size(); i++) {
                //create and post labels for list elements
                uc2.addComponent(new Label((String) uc2answer.get(i)));
            }

            uc2.addComponent(new Label("Time: " + elapsed));

            addComponent(uc2);
        });

        addComponents(button);
        setMargin(true);
        setSpacing(true);
    }

    @Override
    protected UseCase getUseCase() {
        return (UseCase.UC2);
    }
}