Java tutorial
/******************************************************************************* * Copyright (c) 2006-2013 The RCP Company and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * The RCP Company - initial API and implementation *******************************************************************************/ package com.rcpcompany.uibindings.extests.trees; import static com.rcpcompany.test.utils.ui.UITestUtils.*; import static org.junit.Assert.*; import java.util.Arrays; import java.util.List; import org.eclipse.core.databinding.observable.list.IObservableList; import org.eclipse.core.databinding.observable.list.WritableList; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.junit.After; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.junit.runners.Parameterized; import org.junit.runners.Parameterized.Parameters; import com.rcpcompany.uibindings.IBindingContext; import com.rcpcompany.uibindings.IColumnBinding; import com.rcpcompany.uibindings.IManager; import com.rcpcompany.uibindings.IViewerBinding; import com.rcpcompany.uibindings.SpecialBinding; import com.rcpcompany.uibindings.tests.shop.Contact; import com.rcpcompany.uibindings.tests.shop.Country; import com.rcpcompany.uibindings.tests.shop.Customer; import com.rcpcompany.uibindings.tests.shop.Order; import com.rcpcompany.uibindings.tests.shop.Shop; import com.rcpcompany.uibindings.tests.shop.ShopFactory; import com.rcpcompany.uibindings.tests.shop.ShopPackage; import com.rcpcompany.uibindings.tests.utils.BaseUIBTestUtils; import com.rcpcompany.uibindings.tests.utils.views.UIBTestView; import com.rcpcompany.uibindings.utils.IBindingContextSelectionProvider; import com.rcpcompany.uibindings.utils.IDnDSupport; import com.rcpcompany.utils.logging.LogUtils; /** * Performance tests for trees using {@link TreeViewer#expandAll()}. * * @author Tonny Madsen, The RCP Company */ @RunWith(Parameterized.class) public class TreePerformanceTest { private final int mySizeFactor; @Parameters public static List<Object[]> data() { return Arrays.asList(new Object[][] { // sizeFactor { 1 }, { 10 }, { 50 }, // { 100 }, // { 200 }, // // { 500 }, // // { 1000 }, }); } public TreePerformanceTest(int sizeFactor) { mySizeFactor = sizeFactor; } private Shop myShop; private UIBTestView myView; private IBindingContext myContext; private Tree myTree; private TreeColumn myTreeColumn; private IViewerBinding myTreeBinding; private IColumnBinding myTreeColumnBinding; private int myNoShopObjs; @Before public void before() { BaseUIBTestUtils.resetAll(); IManager.Factory.getManager().setEditCellSingleClick(false); try { myShop = createModel(); } catch (final OutOfMemoryError ex) { fail("factor " + mySizeFactor + ": " + ex.getMessage()); } createView(); myView.getSite().getPage().activate(myView); } private Shop createModel() { final Runtime runtime = Runtime.getRuntime(); myNoShopObjs = 0; runtime.gc(); final long startMemory = runtime.totalMemory() - runtime.freeMemory(); final long startTime = System.currentTimeMillis(); final Shop shop = ShopFactory.eINSTANCE.createShop(); myNoShopObjs++; shop.setName("my shop"); final Country country = ShopFactory.eINSTANCE.createCountry(); myNoShopObjs++; country.setName("name"); country.setName("abbreviation"); country.setShop(shop); for (int i = 0; i < mySizeFactor; i++) { final Country c = ShopFactory.eINSTANCE.createCountry(); myNoShopObjs++; c.setName("name " + i); c.setAbbreviation("abbreviation " + i); c.setShop(shop); } for (int i = 0; i < mySizeFactor; i++) { final Contact c = ShopFactory.eINSTANCE.createContact(); myNoShopObjs++; c.setName("name " + i); c.setCountry(country); c.setShop(shop); final Customer cust = ShopFactory.eINSTANCE.createCustomer(); myNoShopObjs++; cust.setContact(c); cust.setShop(shop); for (int j = 0; j < mySizeFactor; j++) { final Order o = ShopFactory.eINSTANCE.createOrder(); myNoShopObjs++; o.setCustomer(cust); o.setDiscount(1000f); } } final long endTime = System.currentTimeMillis(); runtime.gc(); final long endMemory = runtime.totalMemory() - runtime.freeMemory(); final long deltaTime = endTime - startTime; final long deltaMemory = endMemory - startMemory; LogUtils.debug(this, "model (" + mySizeFactor + "): " + myNoShopObjs + " objects " + deltaTime + " ms " + deltaMemory + " bytes (= " + (1f * deltaTime / myNoShopObjs) + " ms/obj) " + (deltaMemory / myNoShopObjs) + " bytes/obj)"); return shop; } /** * Creates the view - pretty real-life */ public void createView() { myView = BaseUIBTestUtils.createUIBTestView(this); myContext = IBindingContext.Factory.createContext(myView.getBody()); myTree = new Tree(myView.getBody(), SWT.SINGLE | SWT.FULL_SELECTION); myTree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); myTree.setHeaderVisible(true); myTreeColumn = new TreeColumn(myTree, SWT.LEAD); myTreeColumn.setWidth(300); // TODO: use listener to make this column 100% final IObservableList list = WritableList.withElementType(ShopPackage.Literals.SHOP); list.add(myShop); myTreeBinding = myContext.addViewer().viewer(myTree).model(list); myTreeColumnBinding = myTreeBinding.addColumn().column(myTreeColumn).model(SpecialBinding.TREE_ITEM); myContext.finish(); IBindingContextSelectionProvider.Factory.adapt(myContext, myView.getSite()); IDnDSupport.Factory.installOn(myContext); myView.getBody().layout(); } @After public void disposeView() { if (myView != null) { myView.getSite().getPage().hideView(myView); } } @Test public void testPerformance() { final TreeViewer viewer = (TreeViewer) myTreeBinding.getViewer(); yield(); final long startTime = System.currentTimeMillis(); /* * Make sure the tree is properly shown */ viewer.expandAll(); yield(); final long endTime = System.currentTimeMillis(); // sleep(2000); LogUtils.debug(this, "expand (" + mySizeFactor + "): " + (endTime - startTime) + " (= " + (1f * (endTime - startTime) / myNoShopObjs) + " ms/obj)"); } }