| /******************************************************************************* |
| * Copyright (c) 2009 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.common.jdt.internal.javalite; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IResourceChangeEvent; |
| import org.eclipse.core.resources.IResourceChangeListener; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.jdt.core.ClasspathContainerInitializer; |
| import org.eclipse.jdt.core.ElementChangedEvent; |
| import org.eclipse.jdt.core.IAccessRule; |
| import org.eclipse.jdt.core.IClasspathAttribute; |
| import org.eclipse.jdt.core.IClasspathEntry; |
| import org.eclipse.jdt.core.IElementChangedListener; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaElementDelta; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.internal.core.JavaModelManager; |
| |
| public final class JavaCoreLite { |
| |
| public static String NATURE_ID = JavaCore.NATURE_ID; |
| |
| private static Object lock = new Object(); |
| |
| private static JavaCoreLite INSTANCE = null; |
| |
| private class JavaCoreLiteListener implements IElementChangedListener, IResourceChangeListener { |
| public void elementChanged(ElementChangedEvent event) { |
| IJavaElementDelta delta = event.getDelta(); |
| IJavaElementDelta[] children = delta.getAffectedChildren(); |
| for (int i = 0; i < children.length; i++) { |
| processDelta(children[i]); |
| } |
| } |
| |
| private void processDelta(IJavaElementDelta delta) { |
| int flags = delta.getFlags(); |
| if ((flags & IJavaElementDelta.F_CLOSED) != 0) { |
| IJavaElement element = delta.getElement(); |
| IJavaProject javaProject = (IJavaProject) element; |
| IProject project = javaProject.getProject(); |
| synchronized (lock) { |
| initializedJavaProjects.remove(project); |
| javaProjectLiteCache.remove(project); |
| } |
| } else if ((flags & IJavaElementDelta.F_CLASSPATH_CHANGED) != 0) { |
| IJavaElement element = delta.getElement(); |
| if (element.getElementType() == IJavaElement.JAVA_PROJECT) { |
| IJavaProject javaProject = (IJavaProject) element; |
| IProject project = javaProject.getProject(); |
| synchronized (lock) { |
| if (!initializedJavaProjects.contains(project) && javaProjectLiteCache.containsKey(project)) { |
| JavaProjectLite javaProjectLite = javaProjectLiteCache.get(project); |
| javaProjectLite.flushClasspath(); |
| } |
| } |
| } |
| } else if ((flags & IJavaElementDelta.F_RESOLVED_CLASSPATH_CHANGED) != 0) { |
| IJavaElement element = delta.getElement(); |
| if (element.getElementType() == IJavaElement.JAVA_PROJECT) { |
| IJavaProject javaProject = (IJavaProject) element; |
| IProject project = javaProject.getProject(); |
| synchronized (lock) { |
| if (!initializedJavaProjects.contains(project)) { |
| initializedJavaProjects.add(project); |
| if (javaProjectLiteCache.containsKey(project)) { |
| JavaProjectLite javaProjectLite = javaProjectLiteCache.get(project); |
| javaProjectLite.markJavaProjectInitialized(); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| public void resourceChanged(IResourceChangeEvent event) { |
| switch (event.getType()) { |
| case IResourceChangeEvent.PRE_CLOSE: |
| case IResourceChangeEvent.PRE_DELETE: |
| IResource resource = event.getResource(); |
| if (resource.getType() == IResource.PROJECT) { |
| IProject project = (IProject) resource; |
| synchronized (lock) { |
| initializedJavaProjects.remove(project); |
| javaProjectLiteCache.remove(project); |
| } |
| } |
| } |
| } |
| } |
| |
| private Set<IProject> initializedJavaProjects = new HashSet<IProject>(); |
| private Map<IProject, JavaProjectLite> javaProjectLiteCache = new HashMap<IProject, JavaProjectLite>(); |
| private JavaCoreLiteListener listener = null; |
| |
| private static JavaCoreLite getInstance() { |
| synchronized (lock) { |
| if (INSTANCE == null) { |
| INSTANCE = new JavaCoreLite(); |
| } |
| } |
| return INSTANCE; |
| } |
| |
| private JavaCoreLite() { |
| listener = new JavaCoreLiteListener(); |
| JavaCore.addElementChangedListener(listener); |
| ResourcesPlugin.getWorkspace().addResourceChangeListener(listener, IResourceChangeEvent.PRE_CLOSE | IResourceChangeEvent.PRE_DELETE); |
| } |
| |
| private IJavaProjectLite createImpl(IProject project) { |
| synchronized (lock) { |
| if (javaProjectLiteCache.containsKey(project)) { |
| return javaProjectLiteCache.get(project); |
| } |
| } |
| |
| IJavaProject javaProject = JavaCore.create(project); |
| if (javaProject != null) { |
| boolean javaProjectInitialized = false; |
| synchronized (lock) { |
| javaProjectInitialized = initializedJavaProjects.contains(project); |
| } |
| if (!javaProjectInitialized) { |
| if (isInitialized(javaProject)) { |
| synchronized (lock) { |
| initializedJavaProjects.add(project); |
| } |
| javaProjectInitialized = true; |
| } |
| } |
| JavaProjectLite javaProjectLite = new JavaProjectLite(javaProject, javaProjectInitialized); |
| synchronized (lock) { |
| javaProjectLiteCache.put(project, javaProjectLite); |
| } |
| return javaProjectLite; |
| } |
| return null; |
| } |
| |
| static boolean isInitialized(IJavaProject javaProject) { |
| if (javaProject.isOpen()) { |
| JavaModelManager.PerProjectInfo projectInfo = JavaModelManager.getJavaModelManager().getPerProjectInfo(javaProject.getProject(), false); |
| if (projectInfo != null) { |
| if (projectInfo.getResolvedClasspath() != null) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public static final IJavaProjectLite create(IProject project) { |
| if (project == null) { |
| throw new NullPointerException(); |
| } |
| return getInstance().createImpl(project); |
| } |
| |
| public static final IJavaProjectLite create(IJavaProject javaProject) { |
| if (javaProject == null) { |
| throw new NullPointerException(); |
| } |
| return create(javaProject.getProject()); |
| } |
| |
| public static ClasspathContainerInitializer getClasspathContainerInitializer(String containerID) { |
| return JavaCore.getClasspathContainerInitializer(containerID); |
| } |
| |
| public static IClasspathEntry newProjectEntry(IPath path) { |
| return JavaCore.newProjectEntry(path); |
| } |
| |
| public static IClasspathEntry newProjectEntry(IPath path, boolean isExported) { |
| return JavaCore.newProjectEntry(path, isExported); |
| } |
| |
| public static IClasspathEntry newProjectEntry(IPath path, IAccessRule[] accessRules, boolean combineAccessRules, IClasspathAttribute[] extraAttributes, boolean isExported) { |
| return JavaCore.newProjectEntry(path, accessRules, combineAccessRules, extraAttributes, isExported); |
| } |
| |
| public static IClasspathEntry newLibraryEntry(IPath path, IPath sourceAttachmentPath, IPath sourceAttachmentRootPath) { |
| return JavaCore.newLibraryEntry(path, sourceAttachmentPath, sourceAttachmentRootPath); |
| } |
| |
| public static IClasspathEntry newLibraryEntry(IPath path, IPath sourceAttachmentPath, IPath sourceAttachmentRootPath, boolean isExported) { |
| return JavaCore.newLibraryEntry(path, sourceAttachmentPath, sourceAttachmentRootPath, isExported); |
| } |
| |
| public static IClasspathEntry newLibraryEntry(IPath path, IPath sourceAttachmentPath, IPath sourceAttachmentRootPath, IAccessRule[] accessRules, IClasspathAttribute[] extraAttributes, boolean isExported) { |
| return JavaCore.newLibraryEntry(path, sourceAttachmentPath, sourceAttachmentRootPath, accessRules, extraAttributes, isExported); |
| } |
| } |