tests/org.eclipse.m2m.tests.qvt.oml/src/org/eclipse/m2m/tests/qvt/oml/RuntimeWorkspaceSetup.java - mmt/org.eclipse.qvto - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007 Borland Software Corporation
  *
  * 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:
  *     Borland Software Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.m2m.tests.qvt.oml;

 import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Hashtable;
 import java.util.Iterator;
 import java.util.Set;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.FileLocator;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.emf.codegen.ecore.Generator;
 import org.eclipse.jdt.core.IClasspathContainer;
 import org.eclipse.jdt.core.IClasspathEntry;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.JavaCore;
 import org.osgi.framework.Bundle;

 /**
  * This strategy is copied from GMF project unittest (www.eclipse.org/gmf)
  *
  * ALMOST TRUE: With PDE, we need source code in the running workspace to allow compilation of our code
  * (because PDE doesn't reexport set of plugins from it's running configuration, and it's no longer possible
  * to set Target Platform to "same as running" as it was back in Eclipse 2.x).
  *
  * !!! NEW !!!
  *
  * Now, we managed to compile against linked binary folders, although using linked content instead of plugins
  * requires us to explicitly add some plugins earlier available through plugin re-export (namely, oe.jface.text)
  *
  *
  * Classloading works because there's -dev argument in the command line. With PDE launch, it's done by PDE.
  * Without PDE, running tests as part of the build relies on Eclipse Testing Framework's org.eclipse.test_3.1.0/library.xml
  * which specifies "-dev bin,runtime". Once it's not specified, or new format (properties file with plugin-id=binfolder)
  * is in use, classloading of the generated code will fail and another mechanism should be invented then.
  *
  * If you get ClassNotFoundException while running tests in PDE environment, try to set read-only attribute for the next file:
  * 'development-workspace'\.metadata\.plugins\org.eclipse.pde.core\'JUnitLaunchConfigName'\dev.properties
  * @author artem
  */
 public class RuntimeWorkspaceSetup {
 	private static RuntimeWorkspaceSetup INSTANCE;

 	/**
 	 * Copy of <code>PDECore.CLASSPATH_CONTAINER_ID</code>
 	 */
 	private static final String PLUGIN_CONTAINER_ID = "org.eclipse.pde.core.requiredPlugins"; //$NON-NLS-1$

 	private boolean isDevLaunchMode;

 	private RuntimeWorkspaceSetup() {
 		isDevLaunchMode = isDevLaunchMode();
 	}

 	public static RuntimeWorkspaceSetup getInstance() {
 		if(INSTANCE == null) {
 			try {
 				INSTANCE = new RuntimeWorkspaceSetup();
 				INSTANCE.initFull();
 			} catch (Exception e) {
 				throw new RuntimeException("Runtime Unittest workspace error", e); //$NON-NLS-1$
 			}
 		}
 		return INSTANCE;
 	}

 	public boolean getIsDevLaunchMode() {
 		return isDevLaunchMode;
 	}

 	/**
 	 * Copy (almost, except for strange unused assignment) of <code>PDECore.isDevLaunchMode()</code>
 	 */
 	private static boolean isDevLaunchMode() {
 		String[] args = Platform.getApplicationArgs();
 		for (int i = 0; i < args.length; i++) {
 			if (args[i].equals("-pdelaunch")) { //$NON-NLS-1$
 				return true;
 			}
 		}
 		return false;
 	}

 	private RuntimeWorkspaceSetup initFull() throws Exception {
 		init(new String[] {
 			"org.eclipse.emf.ecore", //$NON-NLS-1$
 			"org.eclipse.emf.common", //$NON-NLS-1$
 			"org.eclipse.m2m.qvt.oml", //$NON-NLS-1$
 			"org.eclipse.m2m.qvt.oml.samples", //$NON-NLS-1$
 			"org.eclipse.m2m.qvt.oml.ocl.emf.libraries", //$NON-NLS-1$
 			"org.eclipse.m2m.tests.qvt.oml", //$NON-NLS-1$*/

 		});
 		return this;
 	}

 	private void init(String... pluginsToImport) throws Exception {
 		ensureJava14();
 		if (isDevLaunchMode) {
 			// Need to get some gmf source code into target workspace
 			importDevPluginsIntoRunTimeWorkspace(pluginsToImport);
 		}
 	}

 	public static IProject getSOSProject() {
 		return ResourcesPlugin.getWorkspace().getRoot().getProject(".SOSProject"); //$NON-NLS-1$
 	}

 	/**
 	 * Another approach - output binary folders of required plugins are linked as subfolders
 	 * of our own sosProject (created in the target workspace). Then, we could use library classpathEntries
 	 * (details why we should use _workspace_ paths for libraries could be found at
 	 * <code>org.eclipse.jdt.internal.core.builder.NameEnvironment#computeClasspathLocations</code>)
 	 *
 	 * TODO don't assume workspace is clear, check sosProject existence first
 	 * TODO utilize GenDiagram.requiredPluginIDs once it's a field (i.e. add oe.jface.text and don't create plugin project then, just plain project with links
 	 */
 	private void importDevPluginsIntoRunTimeWorkspace(String[] pluginIDs) throws CoreException {
 		IProject p = getSOSProject();
 		final Path srcPath = new Path('/' + p.getName() + "/src"); //$NON-NLS-1$
 		Generator.createEMFProject(srcPath, null, Collections.EMPTY_LIST, new NullProgressMonitor(), Generator.EMF_PLUGIN_PROJECT_STYLE, null);

 		StringBuffer pluginXmlContent = new StringBuffer();
 		pluginXmlContent.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<?eclipse version=\"3.0\"?>\n<plugin "); //$NON-NLS-1$
 		pluginXmlContent.append(" version=\"1.0.0\" name='%providerName' id='"); //$NON-NLS-1$
 		pluginXmlContent.append(p.getName());
 		pluginXmlContent.append("'>\n<requires>\n"); //$NON-NLS-1$
 		pluginXmlContent.append("<import plugin='org.eclipse.jface.text' export='true'/>\n"); //$NON-NLS-1$
 		pluginXmlContent.append("<import plugin='org.eclipse.ui.views.properties.tabbed' export='true'/>\n"); //$NON-NLS-1$

 		ClasspathEntry[] classpathEntries = getClasspathEntries(pluginIDs);
 		for (int i = 0; i < classpathEntries.length; i++) {
 			classpathEntries[i].importTo(p, pluginXmlContent);
 		}

 		pluginXmlContent.append("</requires>\n</plugin>"); //$NON-NLS-1$
 		p.getFile("plugin.xml").create(new ByteArrayInputStream(pluginXmlContent.toString().getBytes()), true, new NullProgressMonitor()); //$NON-NLS-1$
 	}

 	private ClasspathEntry[] getClasspathEntries(String[] pluginIDs) {
 		ArrayList<ClasspathEntry> entries = new ArrayList<ClasspathEntry>(pluginIDs.length);
 		for (int i = 0; i < pluginIDs.length; i++) {
 			ClasspathEntry nextEntry = new ClasspathEntry(pluginIDs[i]);
 			if (nextEntry.isValid()) {
 				entries.add(nextEntry);
 			} else {
 				System.out.println("Bundle " + pluginIDs[i] + " is missing, skipped."); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 		}
 		return entries.toArray(new ClasspathEntry[entries.size()]);
 	}

 	private IJavaProject asJavaProject(IProject p) {
 		return JavaCore.create(p);
 	}

 	/**
 	 * TODO uniqueClassPathEntries is not needed if diagramProj gets here only once. It's not the case
 	 * now - refactor LinkCreationConstraintsTest to utilize genProject created in AuditRulesTest (?)
 	 * TODO refactor with ClasspathContainerInitializer - just for the sake of fixing the knowledge
 	 */
 	public void updateClassPath(IProject aProject) throws CoreException {
 		if (!isDevLaunchMode) {
 			return;
 		}
 		IResource[] members;
 		try {
 			members = getSOSProject().members();
 		} catch (CoreException ex) {
 			ex.printStackTrace();
 			members = new IResource[0];
 		}
 		final IJavaProject sosJavaPrj = asJavaProject(getSOSProject());
 		if(!JavaCore.create(aProject).exists()) {
 			return;
 		}
 		IClasspathEntry[] cpOrig = asJavaProject(aProject).getRawClasspath();
 		ArrayList<IClasspathEntry> rv = new ArrayList<IClasspathEntry>(10 + cpOrig.length + members.length);
 		IClasspathContainer c = JavaCore.getClasspathContainer(new Path(PLUGIN_CONTAINER_ID), sosJavaPrj);
 		if (c != null) {
 			IClasspathEntry[] cpAdd = c.getClasspathEntries();
 			rv.addAll(Arrays.asList(cpAdd));
 		}
 		for (int i = 0; i < members.length; i++) {
 			if (!members[i].isLinked()) {
 				continue;
 			}
 			rv.add(JavaCore.newLibraryEntry(members[i].getFullPath(), null, null));
 		}

 		final Set<IPath> uniqueClassPathEntries = new HashSet<IPath>();
 		IClasspathEntry[] cpOrigResolved = asJavaProject(aProject).getResolvedClasspath(true);
 		for (int i = 0; i < cpOrigResolved.length; i++) {
 			uniqueClassPathEntries.add(cpOrigResolved[i].getPath());
 		}
 		for (Iterator it = rv.iterator(); it.hasNext();) {
 			IClasspathEntry next = (IClasspathEntry) it.next();
 			if (uniqueClassPathEntries.contains(next.getPath())) {
 				it.remove();
 			} else {
 				uniqueClassPathEntries.add(next.getPath());
 			}
 		}
 		rv.addAll(Arrays.asList(cpOrig));

 		IClasspathEntry[] cpNew = rv.toArray(new IClasspathEntry[rv.size()]);
 		asJavaProject(aProject).setRawClasspath(cpNew, new NullProgressMonitor());
 	}

 	/**
 	 * at least
 	 */
 	@SuppressWarnings("unchecked")
 	private void ensureJava14() {
 		if (!JavaCore.VERSION_1_4.equals(JavaCore.getOption(JavaCore.COMPILER_SOURCE))) {
 			Hashtable<String,String> options = JavaCore.getOptions();
 			options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_4);
 			options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_4);
 			options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_4);
 			JavaCore.setOptions(options);
 		}
 	}

 	private class ClasspathEntry {

 		private String myPluginID;
 		private URL myBundleURL;
 		private File myBundleFile;
 		private File myClassesContainerFile;

 		private ClasspathEntry(String pluginID) {
 			myPluginID = pluginID;
 		}

 		public void importTo(IProject p, StringBuffer pluginXmlContent) {
 			if (!getClassesContainerFile().exists()) {
 				pluginXmlContent.append("<import plugin='"); //$NON-NLS-1$
 				pluginXmlContent.append(myPluginID);
 				pluginXmlContent.append("' export='true'/>\n"); //$NON-NLS-1$
 			} else {
 				if (getClassesContainerFile().isDirectory()) {
 					String entryName = getBundleFile().getName().replace('.', '_');
 					IFolder folder = p.getFolder(entryName);
 					try {
 						folder.createLink(new Path(getClassesContainerFile().getAbsolutePath()), IResource.REPLACE, new NullProgressMonitor());
 					} catch (CoreException e) {
 						e.printStackTrace();
 					}
 				} else if (getClassesContainerFile().isFile()) {
 					String entryName = getClassesContainerFile().getName();
 					IFile file = p.getFile(entryName);
 					try {
 						file.createLink(new Path(getClassesContainerFile().getAbsolutePath()), IResource.REPLACE, new NullProgressMonitor());
 					} catch (CoreException e) {
 						e.printStackTrace();
 					}
 				}
 			}
 		}

 		private File getClassesContainerFile() {
 			if (myClassesContainerFile == null) {
 				myClassesContainerFile = new File(getBundleFile(), getRelativePath());
 			}
 			return myClassesContainerFile;
 		}

 		private File getBundleFile() {
 			if (myBundleFile == null) {
 				myBundleFile = new File(getBundleURL().getFile());
 			}
 			return myBundleFile;
 		}

 		private String getRelativePath() {
 			return "/bin/"; //$NON-NLS-1$
 		}

 		private URL getBundleURL() {
 			if (myBundleURL == null) {
 				Bundle bundle = Platform.getBundle(myPluginID);
 				if (bundle == null) {
 					//Do not throw exception. This allows requiring lite runtime plugin and not failing in configurations where it is not present.
 					return null;
 				}
 				try {
 					myBundleURL = FileLocator.resolve(bundle.getEntry("/")); //$NON-NLS-1$
 				} catch (IOException e) {
 					e.printStackTrace();
 				}
 			}
 			return myBundleURL;
 		}

 		public boolean isValid() {
 			return getBundleURL() != null;
 		}

 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007 Borland Software Corporation
	*
	* 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:
	* Borland Software Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.m2m.tests.qvt.oml;

	import java.io.ByteArrayInputStream;
	import java.io.File;
	import java.io.IOException;
	import java.net.URL;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.HashSet;
	import java.util.Hashtable;
	import java.util.Iterator;
	import java.util.Set;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IFolder;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.FileLocator;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.emf.codegen.ecore.Generator;
	import org.eclipse.jdt.core.IClasspathContainer;
	import org.eclipse.jdt.core.IClasspathEntry;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jdt.core.JavaCore;
	import org.osgi.framework.Bundle;

	/**
	* This strategy is copied from GMF project unittest (www.eclipse.org/gmf)
	*
	* ALMOST TRUE: With PDE, we need source code in the running workspace to allow compilation of our code
	* (because PDE doesn't reexport set of plugins from it's running configuration, and it's no longer possible
	* to set Target Platform to "same as running" as it was back in Eclipse 2.x).
	*
	* !!! NEW !!!
	*
	* Now, we managed to compile against linked binary folders, although using linked content instead of plugins
	* requires us to explicitly add some plugins earlier available through plugin re-export (namely, oe.jface.text)
	*
	*
	* Classloading works because there's -dev argument in the command line. With PDE launch, it's done by PDE.
	* Without PDE, running tests as part of the build relies on Eclipse Testing Framework's org.eclipse.test_3.1.0/library.xml
	* which specifies "-dev bin,runtime". Once it's not specified, or new format (properties file with plugin-id=binfolder)
	* is in use, classloading of the generated code will fail and another mechanism should be invented then.
	*
	* If you get ClassNotFoundException while running tests in PDE environment, try to set read-only attribute for the next file:
	* 'development-workspace'\.metadata\.plugins\org.eclipse.pde.core\'JUnitLaunchConfigName'\dev.properties
	* @author artem
	*/
	public class RuntimeWorkspaceSetup {
	private static RuntimeWorkspaceSetup INSTANCE;

	/**
	* Copy of <code>PDECore.CLASSPATH_CONTAINER_ID</code>
	*/
	private static final String PLUGIN_CONTAINER_ID = "org.eclipse.pde.core.requiredPlugins"; //$NON-NLS-1$

	private boolean isDevLaunchMode;

	private RuntimeWorkspaceSetup() {
	isDevLaunchMode = isDevLaunchMode();
	}

	public static RuntimeWorkspaceSetup getInstance() {
	if(INSTANCE == null) {
	try {
	INSTANCE = new RuntimeWorkspaceSetup();
	INSTANCE.initFull();
	} catch (Exception e) {
	throw new RuntimeException("Runtime Unittest workspace error", e); //$NON-NLS-1$
	}
	}
	return INSTANCE;
	}

	public boolean getIsDevLaunchMode() {
	return isDevLaunchMode;
	}

	/**
	* Copy (almost, except for strange unused assignment) of <code>PDECore.isDevLaunchMode()</code>
	*/
	private static boolean isDevLaunchMode() {
	String[] args = Platform.getApplicationArgs();
	for (int i = 0; i < args.length; i++) {
	if (args[i].equals("-pdelaunch")) { //$NON-NLS-1$
	return true;
	}
	}
	return false;
	}

	private RuntimeWorkspaceSetup initFull() throws Exception {
	init(new String[] {
	"org.eclipse.emf.ecore", //$NON-NLS-1$
	"org.eclipse.emf.common", //$NON-NLS-1$
	"org.eclipse.m2m.qvt.oml", //$NON-NLS-1$
	"org.eclipse.m2m.qvt.oml.samples", //$NON-NLS-1$
	"org.eclipse.m2m.qvt.oml.ocl.emf.libraries", //$NON-NLS-1$
	"org.eclipse.m2m.tests.qvt.oml", //$NON-NLS-1$*/

	});
	return this;
	}

	private void init(String... pluginsToImport) throws Exception {
	ensureJava14();
	if (isDevLaunchMode) {
	// Need to get some gmf source code into target workspace
	importDevPluginsIntoRunTimeWorkspace(pluginsToImport);
	}
	}

	public static IProject getSOSProject() {
	return ResourcesPlugin.getWorkspace().getRoot().getProject(".SOSProject"); //$NON-NLS-1$
	}

	/**
	* Another approach - output binary folders of required plugins are linked as subfolders
	* of our own sosProject (created in the target workspace). Then, we could use library classpathEntries
	* (details why we should use _workspace_ paths for libraries could be found at
	* <code>org.eclipse.jdt.internal.core.builder.NameEnvironment#computeClasspathLocations</code>)
	*
	* TODO don't assume workspace is clear, check sosProject existence first
	* TODO utilize GenDiagram.requiredPluginIDs once it's a field (i.e. add oe.jface.text and don't create plugin project then, just plain project with links
	*/
	private void importDevPluginsIntoRunTimeWorkspace(String[] pluginIDs) throws CoreException {
	IProject p = getSOSProject();
	final Path srcPath = new Path('/' + p.getName() + "/src"); //$NON-NLS-1$
	Generator.createEMFProject(srcPath, null, Collections.EMPTY_LIST, new NullProgressMonitor(), Generator.EMF_PLUGIN_PROJECT_STYLE, null);

	StringBuffer pluginXmlContent = new StringBuffer();
	pluginXmlContent.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<?eclipse version=\"3.0\"?>\n<plugin "); //$NON-NLS-1$
	pluginXmlContent.append(" version=\"1.0.0\" name='%providerName' id='"); //$NON-NLS-1$
	pluginXmlContent.append(p.getName());
	pluginXmlContent.append("'>\n<requires>\n"); //$NON-NLS-1$
	pluginXmlContent.append("<import plugin='org.eclipse.jface.text' export='true'/>\n"); //$NON-NLS-1$
	pluginXmlContent.append("<import plugin='org.eclipse.ui.views.properties.tabbed' export='true'/>\n"); //$NON-NLS-1$

	ClasspathEntry[] classpathEntries = getClasspathEntries(pluginIDs);
	for (int i = 0; i < classpathEntries.length; i++) {
	classpathEntries[i].importTo(p, pluginXmlContent);
	}

	pluginXmlContent.append("</requires>\n</plugin>"); //$NON-NLS-1$
	p.getFile("plugin.xml").create(new ByteArrayInputStream(pluginXmlContent.toString().getBytes()), true, new NullProgressMonitor()); //$NON-NLS-1$
	}

	private ClasspathEntry[] getClasspathEntries(String[] pluginIDs) {
	ArrayList<ClasspathEntry> entries = new ArrayList<ClasspathEntry>(pluginIDs.length);
	for (int i = 0; i < pluginIDs.length; i++) {
	ClasspathEntry nextEntry = new ClasspathEntry(pluginIDs[i]);
	if (nextEntry.isValid()) {
	entries.add(nextEntry);
	} else {
	System.out.println("Bundle " + pluginIDs[i] + " is missing, skipped."); //$NON-NLS-1$ //$NON-NLS-2$
	}
	}
	return entries.toArray(new ClasspathEntry[entries.size()]);
	}

	private IJavaProject asJavaProject(IProject p) {
	return JavaCore.create(p);
	}

	/**
	* TODO uniqueClassPathEntries is not needed if diagramProj gets here only once. It's not the case
	* now - refactor LinkCreationConstraintsTest to utilize genProject created in AuditRulesTest (?)
	* TODO refactor with ClasspathContainerInitializer - just for the sake of fixing the knowledge
	*/
	public void updateClassPath(IProject aProject) throws CoreException {
	if (!isDevLaunchMode) {
	return;
	}
	IResource[] members;
	try {
	members = getSOSProject().members();
	} catch (CoreException ex) {
	ex.printStackTrace();
	members = new IResource[0];
	}
	final IJavaProject sosJavaPrj = asJavaProject(getSOSProject());
	if(!JavaCore.create(aProject).exists()) {
	return;
	}
	IClasspathEntry[] cpOrig = asJavaProject(aProject).getRawClasspath();
	ArrayList<IClasspathEntry> rv = new ArrayList<IClasspathEntry>(10 + cpOrig.length + members.length);
	IClasspathContainer c = JavaCore.getClasspathContainer(new Path(PLUGIN_CONTAINER_ID), sosJavaPrj);
	if (c != null) {
	IClasspathEntry[] cpAdd = c.getClasspathEntries();
	rv.addAll(Arrays.asList(cpAdd));
	}
	for (int i = 0; i < members.length; i++) {
	if (!members[i].isLinked()) {
	continue;
	}
	rv.add(JavaCore.newLibraryEntry(members[i].getFullPath(), null, null));
	}

	final Set<IPath> uniqueClassPathEntries = new HashSet<IPath>();
	IClasspathEntry[] cpOrigResolved = asJavaProject(aProject).getResolvedClasspath(true);
	for (int i = 0; i < cpOrigResolved.length; i++) {
	uniqueClassPathEntries.add(cpOrigResolved[i].getPath());
	}
	for (Iterator it = rv.iterator(); it.hasNext();) {
	IClasspathEntry next = (IClasspathEntry) it.next();
	if (uniqueClassPathEntries.contains(next.getPath())) {
	it.remove();
	} else {
	uniqueClassPathEntries.add(next.getPath());
	}
	}
	rv.addAll(Arrays.asList(cpOrig));

	IClasspathEntry[] cpNew = rv.toArray(new IClasspathEntry[rv.size()]);
	asJavaProject(aProject).setRawClasspath(cpNew, new NullProgressMonitor());
	}

	/**
	* at least
	*/
	@SuppressWarnings("unchecked")
	private void ensureJava14() {
	if (!JavaCore.VERSION_1_4.equals(JavaCore.getOption(JavaCore.COMPILER_SOURCE))) {
	Hashtable<String,String> options = JavaCore.getOptions();
	options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_4);
	options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_4);
	options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_4);
	JavaCore.setOptions(options);
	}
	}

	private class ClasspathEntry {

	private String myPluginID;
	private URL myBundleURL;
	private File myBundleFile;
	private File myClassesContainerFile;

	private ClasspathEntry(String pluginID) {
	myPluginID = pluginID;
	}

	public void importTo(IProject p, StringBuffer pluginXmlContent) {
	if (!getClassesContainerFile().exists()) {
	pluginXmlContent.append("<import plugin='"); //$NON-NLS-1$
	pluginXmlContent.append(myPluginID);
	pluginXmlContent.append("' export='true'/>\n"); //$NON-NLS-1$
	} else {
	if (getClassesContainerFile().isDirectory()) {
	String entryName = getBundleFile().getName().replace('.', '_');
	IFolder folder = p.getFolder(entryName);
	try {
	folder.createLink(new Path(getClassesContainerFile().getAbsolutePath()), IResource.REPLACE, new NullProgressMonitor());
	} catch (CoreException e) {
	e.printStackTrace();
	}
	} else if (getClassesContainerFile().isFile()) {
	String entryName = getClassesContainerFile().getName();
	IFile file = p.getFile(entryName);
	try {
	file.createLink(new Path(getClassesContainerFile().getAbsolutePath()), IResource.REPLACE, new NullProgressMonitor());
	} catch (CoreException e) {
	e.printStackTrace();
	}
	}
	}
	}

	private File getClassesContainerFile() {
	if (myClassesContainerFile == null) {
	myClassesContainerFile = new File(getBundleFile(), getRelativePath());
	}
	return myClassesContainerFile;
	}

	private File getBundleFile() {
	if (myBundleFile == null) {
	myBundleFile = new File(getBundleURL().getFile());
	}
	return myBundleFile;
	}

	private String getRelativePath() {
	return "/bin/"; //$NON-NLS-1$
	}

	private URL getBundleURL() {
	if (myBundleURL == null) {
	Bundle bundle = Platform.getBundle(myPluginID);
	if (bundle == null) {
	//Do not throw exception. This allows requiring lite runtime plugin and not failing in configurations where it is not present.
	return null;
	}
	try {
	myBundleURL = FileLocator.resolve(bundle.getEntry("/")); //$NON-NLS-1$
	} catch (IOException e) {
	e.printStackTrace();
	}
	}
	return myBundleURL;
	}

	public boolean isValid() {
	return getBundleURL() != null;
	}

	}
	}