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package com.vaadin.tests.performance;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.data.bean.Address;
import com.vaadin.tests.data.bean.Country;
import com.vaadin.tests.data.bean.Person;
import com.vaadin.tests.data.bean.Sex;
import com.vaadin.ui.AbstractComponent;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.HasComponents;
import com.vaadin.ui.Label;
import com.vaadin.ui.MenuBar;
import com.vaadin.ui.MenuBar.MenuItem;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
import jdk.nashorn.internal.ir.debug.ObjectSizeCalculator;
/**
* @author Vaadin Ltd
*
*/
public abstract class AbstractBeansMemoryTest<T extends AbstractComponent>
extends UI {
private int dataSize;
private boolean isInMemory;
private boolean isDataOnly;
private Label logLabel;
private Label memoryLabel;
@Override
protected void init(VaadinRequest request) {
String items = request.getParameter("items");
int itemsCount = 1;
if (items != null) {
itemsCount = Integer.parseInt(items);
}
VerticalLayout layout = new VerticalLayout();
setContent(layout);
layout.addComponent(new Label(getClass().getSimpleName()));
memoryLabel = new Label();
memoryLabel.setId("memory");
layout.addComponent(memoryLabel);
logLabel = new Label();
logLabel.setId("log");
layout.addComponent(logLabel);
T component = createComponent();
setData(null, itemsCount, component, true);
layout.addComponent(createMenu(component));
layout.addComponent(component);
Button close = new Button("Close UI", event -> close());
close.setId("close");
layout.addComponent(close);
}
protected abstract T createComponent();
private Random random = new Random();
protected List<Person> createBeans(int size) {
return IntStream.range(0, size).mapToObj(this::createPerson)
.collect(Collectors.toList());
}
protected Person createPerson(int index) {
random.setSeed(index);
Person person = new Person();
person.setFirstName("First Name " + random.nextInt());
person.setLastName("Last Name " + random.nextInt());
person.setAge(random.nextInt());
person.setBirthDate(new Date(random.nextLong()));
person.setDeceased(random.nextBoolean());
person.setEmail(random.nextInt() + "user@example.com");
person.setRent(new BigDecimal(random.nextLong()));
person.setSalary(random.nextInt());
person.setSalaryDouble(random.nextDouble());
person.setSex(Sex.values()[random.nextInt(Sex.values().length)]);
Address address = new Address();
person.setAddress(address);
address.setCity("city " + random.nextInt());
address.setPostalCode(random.nextInt());
address.setStreetAddress("street address " + random.nextInt());
address.setCountry(
Country.values()[random.nextInt(Country.values().length)]);
return person;
}
protected abstract void setInMemoryContainer(T component,
List<Person> data);
protected abstract void setBackendContainer(T component, List<Person> data);
@Override
public VerticalLayout getContent() {
return (VerticalLayout) super.getContent();
}
@SuppressWarnings("restriction")
private void setData(MenuItem item, int size, T component,
boolean memoryContainer) {
if (item != null) {
MenuItem parent = item.getParent();
parent.getChildren().stream().filter(itm -> !itm.equals(item))
.forEach(itm -> itm.setChecked(false));
logLabel.setValue(item.getText());
}
dataSize = size;
isInMemory = memoryContainer;
List<Person> persons = createBeans(size);
if (isDataOnly) {
component.setData(persons);
persons = Collections.emptyList();
} else {
component.setData(null);
}
if (isInMemory) {
setInMemoryContainer(component, persons);
} else {
setBackendContainer(component, persons);
}
HasComponents container = component.getParent();
setParent(component, null);
memoryLabel.setValue(
String.valueOf(ObjectSizeCalculator.getObjectSize(component)));
setParent(component, container);
}
private void setParent(Component component, Component parent) {
try {
Field field = AbstractComponent.class.getDeclaredField("parent");
field.setAccessible(true);
field.set(component, parent);
} catch (NoSuchFieldException | SecurityException
| IllegalArgumentException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
private Component createMenu(T component) {
MenuBar menu = new MenuBar();
createContainerSizeMenu(menu.addItem("Size", null), component);
createContainerMenu(menu.addItem("Data provider", null), component);
menu.addItem("Create only data",
item -> toggleDataOnly(item, component)).setCheckable(true);
return menu;
}
private void toggleDataOnly(MenuItem item, T component) {
isDataOnly = item.isChecked();
setData(null, dataSize, component, isInMemory);
}
private void createContainerMenu(MenuItem menu, T component) {
MenuItem menuItem = menu.addItem("Use in-memory container",
item -> setData(item, dataSize, component, true));
menuItem.setCheckable(true);
menuItem.setChecked(true);
menuItem = menu.addItem("Use backend container",
item -> setData(item, dataSize, component, false));
menuItem.setCheckable(true);
}
private void createContainerSizeMenu(MenuItem menu, T component) {
List<MenuItem> items = IntStream.of(1, 10000, 100000, 500000, 1000000)
.mapToObj(size -> addContainerSizeMenu(size, menu, component))
.collect(Collectors.toList());
if (dataSize == 1) {
items.get(0).setChecked(true);
}
}
private MenuItem addContainerSizeMenu(int size, MenuItem menu,
T component) {
MenuItem item = menu.addItem("Set data provider size to " + size,
itm -> setData(itm, size, component, isInMemory));
item.setCheckable(true);
return item;
}
}
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