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/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.itmill.toolkit.tests;
import java.util.Date;
import com.itmill.toolkit.ui.Button;
import com.itmill.toolkit.ui.CustomComponent;
import com.itmill.toolkit.ui.Label;
import com.itmill.toolkit.ui.OrderedLayout;
import com.itmill.toolkit.ui.Table;
public class PerformanceTestSubTreeCaching extends CustomComponent {
private final OrderedLayout main;
private final OrderedLayout testContainer;
private Date startTime;
private final Label result;
private static final String DESCRIPTION = "Hyphothesis: Toolkit 4 has major architechtural problem when adding "
+ "small incrementall updates to a container which has either a lot or "
+ "some very slow components in it. Toolkit 5 has 'subtree caching' and a"
+ " small amount of logic in containers, so CommunicationManager can assure"
+ " that client do not need information about unchanged components it contains."
+ " Completing test ought to be much faster with Toolkit 5.";
private static final int INITIAL_COMPONENTS = 40;
public PerformanceTestSubTreeCaching() {
main = new OrderedLayout();
setCompositionRoot(main);
addInfo();
Button b = new Button("start test", this, "startTest");
b
.setDescription("Push this button to start test. A test label will be rendered above existing components.");
main.addComponent(b);
b = new Button("end test", this, "endTest");
b
.setDescription("Push this button as soon as test componenet is rendered.");
main.addComponent(b);
result = new Label();
main.addComponent(result);
testContainer = new OrderedLayout();
populateContainer(testContainer, INITIAL_COMPONENTS);
main.addComponent(testContainer);
}
public void startTest() {
startTime = new Date();
testContainer.addComponentAsFirst(new Label("Simplel Test Component"));
}
public void endTest() {
final long millis = (new Date()).getTime() - startTime.getTime();
final Float f = new Float(millis / 1000.0);
result.setValue("Test completed in " + f + " seconds");
}
/**
* Adds n Table components to given container
*
* @param testContainer2
*/
private void populateContainer(OrderedLayout container, int n) {
for (int i = 0; i < n; i++) {
// array_type array_element = [i];
final Table t = TestForTablesInitialColumnWidthLogicRendering
.getTestTable(5, 100);
container.addComponent(t);
}
}
private void addInfo() {
main.addComponent(new Label(DESCRIPTION, Label.CONTENT_XHTML));
}
}
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