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/*******************************************************************************
* Copyright (c) 2010 Technical University of Denmark.
* 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:
* Patrick Koenemann, DTU Informatics - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.compare.mpatch.test.junit;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;
import java.text.Format;
import org.eclipse.emf.compare.diff.metamodel.ComparisonSnapshot;
import org.eclipse.emf.compare.mpatch.MPatchModel;
import org.eclipse.emf.compare.mpatch.emfdiff2mpatch.util.TransformationLauncher;
import org.eclipse.emf.compare.mpatch.extension.IModelDescriptorCreator;
import org.eclipse.emf.compare.mpatch.extension.ISymbolicReferenceCreator;
import org.eclipse.emf.compare.mpatch.test.util.CommonTestOperations;
import org.eclipse.emf.compare.mpatch.test.util.CompareTestHelper;
import org.eclipse.emf.compare.mpatch.test.util.PerformanceTimes;
import org.eclipse.emf.compare.mpatch.test.util.TestConstants;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EOperation;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EParameter;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EcoreFactory;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.junit.Test;
/**
* This test case is about performance: by setting some parameters, the number of differences and the size of the model
* can be varied.
*
* @author Patrick Koenemann (pk@imm.dtu.dk)
*
*/
public class PerformanceTest {
/** The smallest test case including this many classes (and 6 times as many changes), e.g. 50. */
private static final int lowerBound = 2;
/** The biggest test case including this many classes (and 6 times as many changes), e.g. 100. */
private static final int upperBound = 100;
/** The step with which the test size is incremented in each iteration, e.g. 10. */
private static final int step = 49;
/** Just some legend for the test results printed to <code>System.out</code>. */
private static final String header = "============================================================================================================\n"
+ "Legend of the performance test results:\n"
+ " Diff's - The number of differences in this test run\n"
+ " Build - Time for building test models\n"
+ " Emfdiff - Time for comparing these model with EMF Compare\n"
+ " MPatch - Time for QVTO transformation to create mpatch\n"
+ " Groups - Time for creating groups in mpatch\n"
+ " Deps - Time for creating dependency graph in mpatch\n"
+ " Refs - Time for creating inernal symbolic references\n"
+ " Resolve - Time for resolving symbolic references for target model\n"
+ " Copy - Time for copying the target model\n"
+ " Apply - Time for applying mpatch to target model\n"
+ " Changes - Time for comparing unchanged with changed model with EMF Compare\n"
+ " Check - Time for checking whether all diffs have been applied successfully\n"
+ " Total - Total time for this test run\n"
+ " Transformation - Parameters for the transformation, i.e. symref descriptor creators\n"
+ "All times are given in ms (miliseconds).\n\n"
+ " Diff's | Built | Emfdiff | MPatch | Groups | Deps | Refs | Resolve | Copy | Apply | Changes | Check | Total | Transformation\n"
+ "--------+-------+---------+--------+--------+------+------+---------+------+--------+---------+-------+--------+----------------";
/**
* Run the performance test with the parameters given in <code>lowerBound</code>, <code>upperBound</code>, and
* <code>step</code>.
*/
@Test
public void testPerformance() {
System.out.println(header);
/*
* test for the performance documentation in the paper:
*/
// System.out.println(prettyPrint(100, testPerformance(100, ExtensionManager.getAllSymbolicReferenceCreators()
// .get("ID-based"), TestConstants.modelDescriptorCreators.iterator().next()), "id performance test"));
// if("".isEmpty())return;
// iterate from 50 to 500 classes in the model to find out the limit
for (int i = lowerBound; i <= upperBound; i += step)
for (ISymbolicReferenceCreator symrefCreator : TestConstants.SYM_REF_CREATORS)
for (IModelDescriptorCreator descriptorCreator : TestConstants.MODEL_DESCRIPTOR_CREATORS)
System.out.println(prettyPrint(i * 6, testPerformance(i, symrefCreator, descriptorCreator),
"descriptor: " + descriptorCreator.getLabel() + ", symref: " + symrefCreator.getLabel()));
}
private static String prettyPrint(int differences, PerformanceTimes times, String transformation) {
return intToFixedWidthString(differences, 7) + " |" // Differences
+ intToFixedWidthString(times.getBuilt(), 6) + " |" // Built
+ intToFixedWidthString(times.getEmfdiff(), 8) + " |" // Emfdiff
+ intToFixedWidthString(times.getMPatch(), 7) + " |" // MPatch
+ intToFixedWidthString(times.getGroups(), 7) + " |" // Groups
+ intToFixedWidthString(times.getDeps(), 5) + " |" // Deps
+ intToFixedWidthString(times.getRefs(), 5) + " |" // Refs
+ intToFixedWidthString(times.getResolve(), 8) + " |" // Resolve
+ intToFixedWidthString(times.getCopy(), 5) + " |" // Copy
+ intToFixedWidthString(times.getApply(), 7) + " |" // Apply
+ intToFixedWidthString(times.getChanges(), 8) + " |" // Changes
+ intToFixedWidthString(times.getCheck(), 6) + " |" // Check
+ intToFixedWidthString(times.getTotal(), 7) + " | " // Total
+ transformation; // details about the transformation
}
private static String intToFixedWidthString(long i, int strlen) {
StringBuffer result = new StringBuffer();
String str = String.valueOf(i);
for (int j = 0; j < strlen - str.length(); j++)
result.append(" ");
result.append(str);
return result.toString();
}
private static PerformanceTimes testPerformance(int size, ISymbolicReferenceCreator symrefCreator,
IModelDescriptorCreator descriptorCreator) {
final PerformanceTimes times = new PerformanceTimes(); // start timing
final String info = "symrefCreator: " + symrefCreator.getLabel() + " and descriptorCreator: "
+ descriptorCreator.getLabel();
// build performance model!
ResourceSet resourceSet = new ResourceSetImpl();
EObject rightModel = buildUnchangedModel(TestConstants.PERFORMANCE_URI1, resourceSet, size);
EObject leftModel = buildChangedModel(TestConstants.PERFORMANCE_URI2, resourceSet, size);
times.setBuilt(); // models are built
// try { // store models without doing anything, e.g. to see test models
// rightModel.eResource().save(null);
// leftModel.eResource().save(null);
// return times;
// } catch (Exception e) {
// fail("Could not save models: " + e.getMessage());
// }
// prepare models
final ComparisonSnapshot emfdiff = CompareTestHelper.getEmfdiffFromEmfCompare(leftModel, rightModel);
times.setEmfdiff(); // emfdiff is built
final MPatchModel mpatch;
try {
mpatch = TransformationLauncher.transform(emfdiff, null, symrefCreator, descriptorCreator);
} catch (Exception e) {
fail("transformation failed (" + info + "): " + e.getMessage());
return null;
}
times.setMPatch(); // mpatch is built
assertNotNull("Preceeding transformation failed! " + info, mpatch);
// get new resource to not conflict with original models!
resourceSet = new ResourceSetImpl();
resourceSet.getResources().add(rightModel.eResource());
resourceSet.getResources().add(leftModel.eResource());
// apply differences and validate the result against the leftModel!
CommonTestOperations.createAndApplyMPatch(mpatch, rightModel, leftModel, times, info);
return times;
}
/*
* BELOW: METHODS FOR BUILDING THE PERFORMANCE TEST MODEL
*/
private static Format fourFormat = new java.text.DecimalFormat("000");
private static EObject buildChangedModel(String uriString, ResourceSet resourceSet, int size) {
// get package of interest
final EPackage pack = (EPackage) CompareTestHelper.loadModel(uriString, resourceSet).get(0);
EPackage newPlace = null;
for (EPackage p : pack.getESubpackages())
if ("newPlace".equals(p.getName()))
newPlace = p;
assertNotNull("Cannot find package 'newPlace'", newPlace);
// get some classifiers we need later
EClass superType = (EClass) pack.getEClassifier("SuperType");
EClassifier oldReferenceTarget = pack.getEClassifier("OldReferenceTarget");
EClassifier newReferenceTarget = pack.getEClassifier("NewReferenceTarget");
assertNotNull("Cannot find classifier 'SuperType'", superType);
assertNotNull("Cannot find classifier 'OldReferenceTarget'", oldReferenceTarget);
assertNotNull("Cannot find classifier 'NewReferenceTarget'", newReferenceTarget);
// now lets create the test data
for (int i = 0; i < size; i++) {
// create a class
EClass c = EcoreFactory.eINSTANCE.createEClass();
c.setName("Class" + fourFormat.format(i));
c.getESuperTypes().add(superType);
// create an attribute
EAttribute a = EcoreFactory.eINSTANCE.createEAttribute();
a.setName("attribute");
a.setEType(EcorePackage.Literals.ESTRING);
// create a reference to newReferenceTarget
EReference r = EcoreFactory.eINSTANCE.createEReference();
r.setName("reference");
r.setEType(newReferenceTarget);
r.setUpperBound(-1);
// add everthing properly
c.getEStructuralFeatures().add(a);
c.getEStructuralFeatures().add(r);
newPlace.getEClassifiers().add(c);
}
return pack;
}
private static EObject buildUnchangedModel(String uriString, ResourceSet resourceSet, int size) {
// get package of interest
final EPackage pack = (EPackage) CompareTestHelper.loadModel(uriString, resourceSet).get(0);
EPackage oldPlace = null;
for (EPackage p : pack.getESubpackages())
if ("oldPlace".equals(p.getName()))
oldPlace = p;
assertNotNull("Cannot find package 'oldPlace'", oldPlace);
// get some classifiers we need later
EClassifier superType = pack.getEClassifier("SuperType");
EClassifier oldReferenceTarget = pack.getEClassifier("OldReferenceTarget");
EClassifier newReferenceTarget = pack.getEClassifier("NewReferenceTarget");
assertNotNull("Cannot find classifier 'SuperType'", superType);
assertNotNull("Cannot find classifier 'OldReferenceTarget'", oldReferenceTarget);
assertNotNull("Cannot find classifier 'NewReferenceTarget'", newReferenceTarget);
// now lets create the test data
for (int i = 0; i < size; i++) {
// create a class
EClass c = EcoreFactory.eINSTANCE.createEClass();
c.setName("Class" + fourFormat.format(i));
// create an operation with two parameters for the class
EOperation o = EcoreFactory.eINSTANCE.createEOperation();
o.setName("operation");
o.setEType(newReferenceTarget);
EParameter p1 = EcoreFactory.eINSTANCE.createEParameter();
p1.setName("parameter1");
p1.setEType(superType);
EParameter p2 = EcoreFactory.eINSTANCE.createEParameter();
p2.setName("parameter2");
p2.setEType(superType);
// create a reference to oldReferenceTarget
EReference r = EcoreFactory.eINSTANCE.createEReference();
r.setName("reference");
r.setEType(oldReferenceTarget);
// add everthing properly
o.getEParameters().add(p1);
o.getEParameters().add(p2);
c.getEOperations().add(o);
c.getEStructuralFeatures().add(r);
oldPlace.getEClassifiers().add(c);
}
return pack;
}
}
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