diff options
Diffstat (limited to 'examples/headless/org.eclipse.viatra.query.application/src/org/eclipse/viatra/query/application/common/ViatraQueryHeadless.java')
| -rw-r--r-- | examples/headless/org.eclipse.viatra.query.application/src/org/eclipse/viatra/query/application/common/ViatraQueryHeadless.java | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/examples/headless/org.eclipse.viatra.query.application/src/org/eclipse/viatra/query/application/common/ViatraQueryHeadless.java b/examples/headless/org.eclipse.viatra.query.application/src/org/eclipse/viatra/query/application/common/ViatraQueryHeadless.java deleted file mode 100644 index a01b0fe02..000000000 --- a/examples/headless/org.eclipse.viatra.query.application/src/org/eclipse/viatra/query/application/common/ViatraQueryHeadless.java +++ /dev/null @@ -1,259 +0,0 @@ -/*******************************************************************************
- * Copyright (c) 2004-2011 Abel Hegedus, Istvan Rath and Daniel Varro
- * 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:
- * Abel Hegedus - initial API and implementation
- * Istvan Rath - refactorings to accommodate to generic/patternspecific API differences
- *******************************************************************************/
-package org.eclipse.viatra.query.application.common;
-
-
-import java.util.Collection;
-
-import org.eclipse.core.databinding.observable.set.IObservableSet;
-import org.eclipse.core.databinding.observable.set.ISetChangeListener;
-import org.eclipse.core.databinding.observable.set.SetChangeEvent;
-import org.eclipse.emf.common.util.URI;
-import org.eclipse.emf.ecore.EClass;
-import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.ecore.EPackage;
-import org.eclipse.emf.ecore.EcoreFactory;
-import org.eclipse.emf.ecore.resource.Resource;
-import org.eclipse.emf.ecore.resource.ResourceSet;
-import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
-import org.eclipse.viatra.addon.databinding.runtime.api.ViatraObservables;
-import org.eclipse.viatra.query.application.queries.EClassNamesMatcher;
-import org.eclipse.viatra.query.application.queries.EObjectMatch;
-import org.eclipse.viatra.query.application.queries.EObjectMatcher;
-import org.eclipse.viatra.query.application.queries.EPackageMatch;
-import org.eclipse.viatra.query.application.queries.EPackageMatcher;
-import org.eclipse.viatra.query.application.queries.HeadlessQueries;
-import org.eclipse.viatra.query.application.queries.util.EClassNamesProcessor;
-import org.eclipse.viatra.query.application.queries.util.EObjectProcessor;
-import org.eclipse.viatra.query.application.queries.util.EPackageProcessor;
-import org.eclipse.viatra.query.runtime.api.IPatternMatch;
-import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine;
-import org.eclipse.viatra.query.runtime.api.ViatraQueryMatcher;
-import org.eclipse.viatra.query.runtime.emf.EMFScope;
-import org.eclipse.viatra.query.runtime.exception.ViatraQueryException;
-
-/**
- * @author Abel Hegedus
- * @author Istvan Rath
- *
- */
-public class ViatraQueryHeadless {
-
- protected Resource loadModel(String modelPath) {
- URI fileURI = URI.createFileURI(modelPath);
- return loadModel(fileURI);
- }
-
- protected Resource loadModel(URI fileURI) {
- // Loads the resource
- ResourceSet resourceSet = new ResourceSetImpl();
- Resource resource = resourceSet.getResource(fileURI, true);
- return resource;
- }
-
- protected void prettyPrintMatches(StringBuilder results, Collection<? extends IPatternMatch> matches) {
- for (IPatternMatch match : matches) {
- results.append(match.prettyPrint()+"; ");
- }
- if(matches.size() == 0) {
- results.append("Empty match set");
- }
- results.append("\n");
- }
-
-
- public String executeDemo(String modelPath) {
- final StringBuilder results = new StringBuilder();
- Resource resource = loadModel(modelPath);
- if (resource != null) {
- try {
- // get all matches of the pattern
- // initialization
- // phase 1: (managed) ViatraQueryEngine
- ViatraQueryEngine engine = ViatraQueryEngine.on(new EMFScope(resource));
- // phase 2: the matcher itself
- EObjectMatcher matcher = EObjectMatcher.on(engine);
- // get all matches of the pattern
- Collection<EObjectMatch> matches = matcher.getAllMatches();
- prettyPrintMatches(results, matches);
- // using a match processor
- matcher.forEachMatch(new EObjectProcessor() {
- @Override
- public void process(EObject o) {
- results.append("\tEObject: " + o.toString() + "\n");
- }
- });
- // matching with partially bound input parameters
- // a new matcher initialization will trigger a new traversal of the model
- // unless you use pattern groups, see executePatternSpecific_PatternGroups below
- EClassNamesMatcher matcher2 = EClassNamesMatcher.on(engine);
- // defining an input mask by binding "name" to "A" ->
- matcher2.forEachMatch( matcher2.newMatch(null, "A") , new EClassNamesProcessor() {
- @Override
- public void process(EClass c, String n) {
- results.append("\tEClass with name A: " + c.toString() + "\n");
- }
- });
- } catch (ViatraQueryException e) {
- e.printStackTrace();
- results.append(e.getMessage());
- }
- } else {
- results.append("Resource not found");
- }
- return results.toString();
- }
-
- public String executeDemo_PatternGroups(String modelPath) {
- final StringBuilder results = new StringBuilder();
- Resource resource = loadModel(modelPath);
- if (resource != null) {
- try {
- // initialization
- // phase 1: (managed) ViatraQueryEngine
- ViatraQueryEngine engine = ViatraQueryEngine.on(new EMFScope(resource));
- // phase 2: the group of pattern matchers
- HeadlessQueries patternGroup = HeadlessQueries.instance();
- patternGroup.prepare(engine);
- // from here on everything is the same
- EObjectMatcher matcher = EObjectMatcher.on(engine);
- // get all matches of the pattern
- Collection<EObjectMatch> matches = matcher.getAllMatches();
- prettyPrintMatches(results, matches);
- // using a match processor
- matcher.forEachMatch(new EObjectProcessor() {
- @Override
- public void process(EObject o) {
- results.append("\tEObject: " + o.toString() + "\n");
- }
- });
- // matching with partially bound input parameters
- // because EClassNamesMatcher is included in the patterngroup, *no new traversal* will be done here
- EClassNamesMatcher matcher2 = EClassNamesMatcher.on(engine);
- // defining an input mask by binding "name" to "A" ->
- matcher2.forEachMatch(null, "A" , new EClassNamesProcessor() {
- @Override
- public void process(EClass c, String n) {
- results.append("\tEClass with name A: " + c.toString() + "\n");
- }
- });
- // projections
- for (EClass ec: matcher2.getAllValuesOfc(matcher2.newMatch(null,"A")))
- {
- results.append("\tEClass with name A: " + ec.toString() + "\n");
- }
- } catch (ViatraQueryException e) {
- e.printStackTrace();
- results.append(e.getMessage());
- }
- } else {
- results.append("Resource not found");
- }
- return results.toString();
- }
-
- // incrementally track changes
-
- protected void performModelModification(Resource res) {
- // somewhat brittle code, assumes there is a root EPackage in the Resource
- EPackage rootPackage = (EPackage)res.getContents().get(0);
- // add a new EPackage
- EPackage newPackage = EcoreFactory.eINSTANCE.createEPackage();
- newPackage.setName("NewPackage");
- rootPackage.getESubpackages().add(newPackage);
- }
-
- public String executeTrackChangesDemo(String modelPath)
- {
- final StringBuilder results = new StringBuilder();
- Resource resource = loadModel(modelPath);
- if (resource != null) {
- try {
- // initialization
- // phase 1: (managed) ViatraQueryEngine
- ViatraQueryEngine engine = ViatraQueryEngine.on(new EMFScope(resource));
- // phase 2: pattern matcher for packages
- EPackageMatcher matcher = EPackageMatcher.on(engine);
- matcher.forEachMatch(new EPackageProcessor() {
- @Override
- public void process(EPackage p) {
- results.append("\tEPackage before modification: " + p.getName()+"\n");
- }
- });
- // phase 3: prepare for change processing
- changeProcessing_databinding(results, matcher);
- // phase 4: modify model, change processor will update results accordingly
- performModelModification(resource);
- }
- catch (ViatraQueryException e) {
- e.printStackTrace();
- results.append(e.getMessage());
- }
- } else {
- results.append("Resource not found");
- }
- return results.toString();
- }
-
-
-
- private void changeProcessing_databinding(final StringBuilder results, ViatraQueryMatcher<?> matcher) {
- // (+) changes can also be tracked using JFace Databinding
- // this approach provides good performance, as the observable callbacks are guaranteed to be called
- // in a consistent state, and only when there is a relevant change; anything
- // can be written into the callback method
- // (-) * the databinding API introduces additional dependencies
- // * is does not support generics, hence typesafe programming is not possible
- // * a "Realm" needs to be set up for headless execution
- DefaultRealm realm = new DefaultRealm();
- IObservableSet set = ViatraObservables.observeMatchesAsSet(matcher);
-
- set.addSetChangeListener(new ISetChangeListener() {
- @Override
- public void handleSetChange(SetChangeEvent event) {
- for (Object _o : event.diff.getAdditions()) {
- if (_o instanceof EPackageMatch) {
- results.append("\tNew EPackage found by changeset databinding: " + ((EPackageMatch)_o).getP().getName()+"\n");
- }
- }
- for (Object _o : event.diff.getRemovals()) {
- // left empty
- }
- }
- });
-
- /* the same could also be done with a list:
- IObservableList list = ViatraObservables.observeMatchesAsList(factory, engine);
- list.addListChangeListener(new IListChangeListener() {
-
- @Override
- public void handleListChange(ListChangeEvent event) {
- for (ListDiffEntry lde : event.diff.getDifferences())
- {
- if (lde.isAddition()) {
- Object _o = lde.getElement();
- if (_o instanceof EPackageMatch) {
- results.append("\tNew EPackage found by changeset databinding: " + ((EPackageMatch)_o).getP().getName()+"\n");
- }
- }
- else {
- // left emptry
- }
- }
- }
- });
- */
- }
-
-
-
-}
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