diff options
Diffstat (limited to 'bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/taglib/TaglibIndex.java')
| -rw-r--r-- | bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/taglib/TaglibIndex.java | 947 |
1 files changed, 0 insertions, 947 deletions
diff --git a/bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/taglib/TaglibIndex.java b/bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/taglib/TaglibIndex.java deleted file mode 100644 index 4836346ebd..0000000000 --- a/bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/taglib/TaglibIndex.java +++ /dev/null @@ -1,947 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2005, 2008 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.jsp.core.taglib; - -import java.io.File; -import java.lang.ref.Reference; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Hashtable; -import java.util.Iterator; -import java.util.List; -import java.util.Map; -import java.util.zip.CRC32; - -import org.eclipse.core.filebuffers.FileBuffers; -import org.eclipse.core.resources.IFile; -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.IResourceDelta; -import org.eclipse.core.resources.IWorkspaceRoot; -import org.eclipse.core.resources.ResourcesPlugin; -import org.eclipse.core.runtime.CoreException; -import org.eclipse.core.runtime.IPath; -import org.eclipse.core.runtime.Path; -import org.eclipse.core.runtime.Platform; -import org.eclipse.core.runtime.jobs.ILock; -import org.eclipse.core.runtime.jobs.Job; -import org.eclipse.jdt.core.ElementChangedEvent; -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.core.JavaModelException; -import org.eclipse.jst.jsp.core.internal.JSPCorePlugin; -import org.eclipse.jst.jsp.core.internal.Logger; -import org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager; -import org.osgi.framework.Bundle; - -/** - * A non-extendable index manager for taglibs similar to the previous J2EE - * ITaglibRegistry but lacking any ties to project natures. Each record - * returned from the index represents a single tag library descriptor. - * - * Indexing is only persisted between sessions for entries on the Java Build - * Path. New ADD events will be sent to ITaglibIndexListeners during each - * workbench session for both cached and newly found records. REMOVE events - * are not fired on workbench shutdown. The record's contents should be - * examined for any further information. - * - * @since 1.0 - */ -public final class TaglibIndex { - class ClasspathChangeListener implements IElementChangedListener { - List projectsIndexed = new ArrayList(1); - - public void elementChanged(ElementChangedEvent event) { - if (!isIndexAvailable()) - return; - try { - LOCK.acquire(); - if (_debugEvents) { - Logger.log(Logger.INFO, "TaglibIndex responding to:" + event); //$NON-NLS-1$ - } - projectsIndexed.clear(); - elementChanged(event.getDelta(), true); - fireCurrentDelta(event); - } - finally { - LOCK.release(); - } - } - - private void elementChanged(IJavaElementDelta delta, boolean forceUpdate) { - if (frameworkIsShuttingDown()) - return; - - IJavaElement element = delta.getElement(); - if (element.getElementType() == IJavaElement.JAVA_MODEL) { - IJavaElementDelta[] changed = delta.getAffectedChildren(); - for (int i = 0; i < changed.length; i++) { - elementChanged(changed[i], forceUpdate); - } - } - // Handle any changes at the project level - else if (element.getElementType() == IJavaElement.JAVA_PROJECT) { - if ((delta.getFlags() & IJavaElementDelta.F_CLASSPATH_CHANGED) != 0) { - IJavaElement proj = element; - handleClasspathChange((IJavaProject) proj, forceUpdate); - } - else { - IJavaElementDelta[] deltas = delta.getAffectedChildren(); - if (deltas.length == 0) { - if (delta.getKind() == IJavaElementDelta.REMOVED || (delta.getFlags() & IJavaElementDelta.F_CLOSED) != 0) { - /* - * If the project is being deleted or closed, just - * remove the description - */ - IJavaProject proj = (IJavaProject) element; - ProjectDescription description = (ProjectDescription) fProjectDescriptions.remove(proj.getProject()); - if (description != null) { - if (_debugIndexCreation) { - Logger.log(Logger.INFO, "removing index of " + description.fProject.getName()); //$NON-NLS-1$ - } - // removing the index file ensures that we - // don't get stale data if the project is - // reopened - removeIndex(proj.getProject()); - } - } - } - /* - * (else) Without the classpath changing, there's nothing - * else to do - */ - else { - for (int i = 0; i < deltas.length; i++) { - elementChanged(deltas[i], false); - } - } - } - } - /* - * Other modification to the classpath (such as within a classpath - * container like "Web App Libraries") go to the description - * itself - */ - else if ((delta.getFlags() & IJavaElementDelta.F_ADDED_TO_CLASSPATH) != 0 || (delta.getFlags() & IJavaElementDelta.F_REMOVED_FROM_CLASSPATH) != 0) { - IJavaProject affectedProject = element.getJavaProject(); - if (affectedProject != null) { - /* - * If the affected project has an index on-disk, it's - * going to be invalid--we need to create/load the - * description so it will be up to date [loading now and - * updating is usually faster than regenerating the entire - * index]. If there is no index on disk, do nothing more. - */ - File indexFile = new File(computeIndexLocation(affectedProject.getProject().getFullPath())); - if (indexFile.exists()) { - ProjectDescription affectedDescription = createDescription(affectedProject.getProject()); - if (affectedDescription != null) { - affectedDescription.handleElementChanged(delta); - } - } - projectsIndexed.add(affectedProject.getProject()); - } - } - } - - private void handleClasspathChange(IJavaProject project, boolean forceUpdate) { - if (frameworkIsShuttingDown()) - return; - - try { - /* Handle large changes to this project's build path */ - IResource resource = project.getCorrespondingResource(); - if (resource.getType() == IResource.PROJECT && !projectsIndexed.contains(resource)) { - /* - * Use get instead of create since the downstream - * (upstream?) project wasn't itself modified. - */ - ProjectDescription description = null; - if (forceUpdate) { - description = createDescription((IProject) resource); - } - else { - description = getDescription((IProject) resource); - } - if (description != null && !frameworkIsShuttingDown()) { - projectsIndexed.add(resource); - description.setBuildPathIsDirty(); - } - } - } - catch (JavaModelException e) { - Logger.logException(e); - } - } - } - - class ResourceChangeListener implements IResourceChangeListener { - public void resourceChanged(IResourceChangeEvent event) { - if (!isIndexAvailable()) - return; - try { - LOCK.acquire(); - if (_debugEvents) { - Logger.log(Logger.INFO, "TaglibIndex responding to:" + event + "\n" + event.getDelta()); //$NON-NLS-2$ //$NON-NLS-1$ - } - switch (event.getType()) { - case IResourceChangeEvent.PRE_CLOSE : - case IResourceChangeEvent.PRE_DELETE : { - try { - // pair deltas with projects - IResourceDelta[] deltas = new IResourceDelta[]{event.getDelta()}; - IProject[] projects = null; - - if (deltas.length > 0) { - IResource resource = null; - if (deltas[0] != null) { - resource = deltas[0].getResource(); - } - else { - resource = event.getResource(); - } - - if (resource != null) { - if (resource.getType() == IResource.ROOT) { - deltas = deltas[0].getAffectedChildren(); - projects = new IProject[deltas.length]; - for (int i = 0; i < deltas.length; i++) { - if (deltas[i].getResource().getType() == IResource.PROJECT) { - projects[i] = (IProject) deltas[i].getResource(); - } - } - } - else { - projects = new IProject[1]; - if (resource.getType() != IResource.PROJECT) { - projects[0] = resource.getProject(); - } - else { - projects[0] = (IProject) resource; - } - } - } - for (int i = 0; i < projects.length; i++) { - if (_debugIndexCreation) { - Logger.log(Logger.INFO, "TaglibIndex noticed " + projects[i].getName() + " is about to be deleted/closed"); //$NON-NLS-1$ //$NON-NLS-2$ - } - ProjectDescription description = (ProjectDescription) fProjectDescriptions.remove(projects[i]); - if (description != null) { - if (_debugIndexCreation) { - Logger.log(Logger.INFO, "removing index of " + description.fProject.getName()); //$NON-NLS-1$ - } - description.clear(); - } - } - } - } - catch (Exception e) { - Logger.logException("Exception while processing resource deletion", e); //$NON-NLS-1$ - } - } - case IResourceChangeEvent.POST_CHANGE : { - try { - // pair deltas with projects - IResourceDelta[] deltas = new IResourceDelta[]{event.getDelta()}; - IProject[] projects = null; - - if (deltas.length > 0) { - IResource resource = null; - if (deltas[0] != null) { - resource = deltas[0].getResource(); - } - else { - resource = event.getResource(); - } - - if (resource != null) { - if (resource.getType() == IResource.ROOT) { - deltas = deltas[0].getAffectedChildren(); - projects = new IProject[deltas.length]; - for (int i = 0; i < deltas.length; i++) { - if (deltas[i].getResource().getType() == IResource.PROJECT) { - projects[i] = (IProject) deltas[i].getResource(); - } - } - } - else { - projects = new IProject[1]; - if (resource.getType() != IResource.PROJECT) { - projects[0] = resource.getProject(); - } - else { - projects[0] = (IProject) resource; - } - } - } - for (int i = 0; i < projects.length; i++) { - if (deltas[i].getKind() == IResourceDelta.CHANGED && (deltas[i].getFlags() == IResourceDelta.ENCODING || deltas[i].getFlags() == IResourceDelta.MARKERS)) - continue; - try { - if (deltas[i] != null && deltas[i].getKind() != IResourceDelta.REMOVED && projects[i].isAccessible()) { - ProjectDescription description = getDescription(projects[i]); - if (description != null && !frameworkIsShuttingDown()) { - deltas[i].accept(description.getVisitor()); - } - } - if (!projects[i].isAccessible() || (deltas[i] != null && deltas[i].getKind() == IResourceDelta.REMOVED)) { - if (_debugIndexCreation) { - Logger.log(Logger.INFO, "TaglibIndex noticed " + projects[i].getName() + " was removed or is no longer accessible"); //$NON-NLS-1$ //$NON-NLS-2$ - } - ProjectDescription description = (ProjectDescription) fProjectDescriptions.remove(projects[i]); - if (description != null) { - if (_debugIndexCreation) { - Logger.log(Logger.INFO, "removing index of " + description.fProject.getName()); //$NON-NLS-1$ - } - description.clear(); - } - } - } - catch (CoreException e) { - Logger.logException(e); - } - } - } - } - catch (Exception e) { - Logger.logException("Exception while processing resource change", e); //$NON-NLS-1$ - } - } - } - - fireCurrentDelta(event); - } - finally { - LOCK.release(); - } - } - } - - static final boolean _debugChangeListener = false; - - static boolean _debugEvents = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.jst.jsp.core/taglib/events")); //$NON-NLS-1$ //$NON-NLS-2$ - - static boolean _debugIndexCreation = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.jst.jsp.core/taglib/indexcreation")); //$NON-NLS-1$ //$NON-NLS-2$ - - static final boolean _debugResolution = "true".equals(Platform.getDebugOption("org.eclipse.jst.jsp.core/taglib/resolve")); //$NON-NLS-1$ //$NON-NLS-2$ - - static TaglibIndex _instance = new TaglibIndex(); - - private boolean initialized; - - private static final CRC32 checksumCalculator = new CRC32(); - - private static final String CLEAN = "CLEAN"; - private static final String DIRTY = "DIRTY"; - static boolean ENABLED = false; - - static ILock LOCK = Job.getJobManager().newLock(); - - /** - * NOT API. - * - * @param listener - * the listener to be added - */ - public static void addTaglibIndexListener(ITaglibIndexListener listener) { - if (getInstance().isInitialized()) - getInstance().internalAddTaglibIndexListener(listener); - } - - static void fireTaglibDelta(ITaglibIndexDelta delta) { - if (_debugEvents) { - Logger.log(Logger.INFO, "TaglibIndex fired delta:" + delta + " [" + delta.getAffectedChildren().length + "]\n" + ((TaglibIndexDelta) delta).trigger); //$NON-NLS-1$ - } - /* - * Flush any shared cache entries, the TaglibControllers should handle - * updating their documents as needed. - */ - ITaglibIndexDelta[] deltas = delta.getAffectedChildren(); - for (int i = 0; i < deltas.length; i++) { - ITaglibRecord taglibRecord = deltas[i].getTaglibRecord(); - if (taglibRecord != null) { - Object uniqueIdentifier = TLDCMDocumentManager.getUniqueIdentifier(taglibRecord); - if (uniqueIdentifier != null) { - TLDCMDocumentManager.getSharedDocumentCache().remove(uniqueIdentifier); - } - else { - Logger.log(Logger.ERROR, "identifier for " + taglibRecord + " was null"); - } - } - } - synchronized (TLDCMDocumentManager.getSharedDocumentCache()) { - Iterator values = TLDCMDocumentManager.getSharedDocumentCache().values().iterator(); - while (values.hasNext()) { - Object o = values.next(); - if (o instanceof Reference) { - values.remove(); - } - } - } - - if (_instance.isInitialized()) { - ITaglibIndexListener[] listeners = _instance.fTaglibIndexListeners; - if (listeners != null) { - for (int j = 0; j < listeners.length; j++) { - try { - listeners[j].indexChanged(delta); - } - catch (Exception e) { - Logger.log(Logger.WARNING, e.getMessage()); - } - } - } - } - } - - - /** - * Finds all of the visible ITaglibRecords for the given path in the - * workspace. Taglib mappings from web.xml files are only visible to paths - * within the web.xml's corresponding web content folder. - * - * @param fullPath - - * a path within the workspace - * @return All of the visible ITaglibRecords from the given path. - */ - public static ITaglibRecord[] getAvailableTaglibRecords(IPath fullPath) { - if (!_instance.isInitialized()) { - return new ITaglibRecord[0]; - } - ITaglibRecord[] records = null; - if (getInstance().isInitialized()) { - records = getInstance().internalGetAvailableTaglibRecords(fullPath); - } - else { - records = new ITaglibRecord[0]; - } - getInstance().fireCurrentDelta("enumerate: " + fullPath); //$NON-NLS-1$ - return records; - } - - /** - * Returns the IPath considered to be the web-app root for the given path. - * All resolution from the given path beginning with '/' will be relative - * to the computed web-app root. - * - * @deprecated - is not correct in flexible projects - * @param path - - * a path under the web-app root - * @return the IPath considered to be the web-app's root for the given - * path or null if one could not be determined - */ - public static IPath getContextRoot(IPath path) { - try { - LOCK.acquire(); - if (getInstance().isInitialized()) { - return getInstance().internalGetContextRoot(path); - } - } - finally { - LOCK.release(); - } - return null; - } - - public static TaglibIndex getInstance() { - return _instance; - } - - /** - * NOT API. - * - * @param listener - * the listener to be removed - */ - public static void removeTaglibIndexListener(ITaglibIndexListener listener) { - if (!getInstance().isInitialized()) - return; - if (getInstance().isInitialized()) - getInstance().internalRemoveTaglibIndexListener(listener); - } - - /** - * Finds a matching ITaglibRecord given the reference. Typically the - * result will have to be cast to a subiinterface of ITaglibRecord. - * - * @param basePath - - * the workspace-relative path for IResources, full filesystem - * path otherwise - * @param reference - - * the URI to lookup, for example the uri value from a taglib - * directive - * @param crossProjects - - * whether to search across projects (currently ignored) - * - * @return a visible ITaglibRecord or null if the reference points to no - * known tag library descriptor - * - * @See ITaglibRecord - */ - public static ITaglibRecord resolve(String basePath, String reference, boolean crossProjects) { - ITaglibRecord result = null; - if (getInstance().isInitialized()) { - result = getInstance().internalResolve(basePath, reference, crossProjects); - } - getInstance().fireCurrentDelta("resolve: " + reference); //$NON-NLS-1$ - if (_debugResolution) { - if (result == null) { - Logger.log(Logger.INFO, "TaglibIndex could not resolve \"" + reference + "\" from " + basePath); //$NON-NLS-1$ //$NON-NLS-2$ - } - else { - switch (result.getRecordType()) { - case (ITaglibRecord.TLD) : { - ITLDRecord record = (ITLDRecord) result; - Logger.log(Logger.INFO, "TaglibIndex resolved " + basePath + ":" + reference + " = " + record.getPath()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - } - break; - case (ITaglibRecord.JAR) : { - IJarRecord record = (IJarRecord) result; - Logger.log(Logger.INFO, "TaglibIndex resolved " + basePath + ":" + reference + " = " + record.getLocation()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - } - break; - case (ITaglibRecord.TAGDIR) : { - ITagDirRecord record = (ITagDirRecord) result; - Logger.log(Logger.INFO, "TaglibIndex resolved " + basePath + ":" + reference + " = " + record.getPath()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - } - break; - case (ITaglibRecord.URL) : { - IURLRecord record = (IURLRecord) result; - Logger.log(Logger.INFO, "TaglibIndex resolved " + basePath + ":" + reference + " = " + record.getURL()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - } - break; - } - } - } - return result; - } - - /** - * Instructs the index to stop listening for resource and classpath - * changes, and to forget all information about the workspace. - */ - public static void shutdown() { - try { - LOCK.acquire(); - if (_instance.isInitialized()) { - _instance.stop(); - } - } - finally { - LOCK.release(); - } - } - - /** - * Instructs the index to begin listening for resource and classpath - * changes. - */ - public static void startup() { - boolean shuttingDown = !Platform.isRunning() || Platform.getBundle(OSGI_FRAMEWORK_ID).getState() == Bundle.STOPPING; - if (!shuttingDown) { - try { - LOCK.acquire(); - ENABLED = !"false".equalsIgnoreCase(System.getProperty(TaglibIndex.class.getName())); //$NON-NLS-1$ - getInstance().initializeInstance(); - } - finally { - LOCK.release(); - } - } - } - - private ClasspathChangeListener fClasspathChangeListener = null; - - private TaglibIndexDelta fCurrentTopLevelDelta = null; - - Map fProjectDescriptions = null; - - private ResourceChangeListener fResourceChangeListener; - - private ITaglibIndexListener[] fTaglibIndexListeners = null; - - /** symbolic name for OSGI framework */ - private final static String OSGI_FRAMEWORK_ID = "org.eclipse.osgi"; //$NON-NLS-1$ - - private TaglibIndex() { - super(); - } - - private void initializeInstance() { - - if (isInitialized()) - return; - try { - LOCK.acquire(); - /* - * check again, just incase it was initialized on another thread, - * while we were waiting for the lock - */ - if (!isInitialized()) { - /* - * Only consider a crash if a value exists and is DIRTY (not a - * new workspace) - */ - if (DIRTY.equalsIgnoreCase(getState())) { - Logger.log(Logger.ERROR, "A workspace crash was detected. The previous session did not exit normally. Not using saved taglib indexes."); //$NON-NLS-3$ - removeIndexes(false); - } - - fProjectDescriptions = new Hashtable(); - fResourceChangeListener = new ResourceChangeListener(); - fClasspathChangeListener = new ClasspathChangeListener(); - if (ENABLED) { - ResourcesPlugin.getWorkspace().addResourceChangeListener(fResourceChangeListener, IResourceChangeEvent.POST_CHANGE); - JavaCore.addElementChangedListener(fClasspathChangeListener); - } - setIntialized(true); - } - } - finally { - LOCK.release(); - } - } - - /** - * Adds the given delta as a child to an overall delta - * - * @param delta - */ - void addDelta(ITaglibIndexDelta delta) { - ensureDelta(delta.getProject()).addChildDelta(delta); - } - - /** - * Based on org.eclipse.jdt.internal.core.search.indexing.IndexManager - * - * @param containerPath - * @return - */ - String computeIndexLocation(IPath containerPath) { - String fileName = computeIndexName(containerPath); - if (_debugIndexCreation) - Logger.log(Logger.INFO, "-> index name for " + containerPath + " is " + fileName); //$NON-NLS-1$ //$NON-NLS-2$ - String indexLocation = getTaglibIndexStateLocation().append(fileName).toOSString(); - return indexLocation; - } - - String computeIndexName(IPath containerPath) { - checksumCalculator.reset(); - checksumCalculator.update(containerPath.toOSString().getBytes()); - // use ".dat" so we're not confused with JDT indexes - String fileName = Long.toString(checksumCalculator.getValue()) + ".dat"; //$NON-NLS-1$ - return fileName; - } - - /** - * @param project - * @return - */ - ProjectDescription createDescription(IProject project) { - ProjectDescription description = null; - try { - LOCK.acquire(); - description = (ProjectDescription) fProjectDescriptions.get(project); - if (description == null) { - // Once we've started indexing, we're dirty again - if (fProjectDescriptions.isEmpty()) { - setState(DIRTY); - } - description = new ProjectDescription(project, computeIndexLocation(project.getFullPath())); - fProjectDescriptions.put(project, description); - } - } - finally { - LOCK.release(); - } - return description; - } - - /** - * Ensures that a delta exists for holding index change information - */ - private TaglibIndexDelta ensureDelta(IProject project) { - /* - * The first delta to be added will determine which project the - * top-level delta will contain. - */ - if (fCurrentTopLevelDelta == null) { - fCurrentTopLevelDelta = new TaglibIndexDelta(project, null, ITaglibIndexDelta.CHANGED); - } - return fCurrentTopLevelDelta; - } - - void fireCurrentDelta(Object trigger) { - if (fCurrentTopLevelDelta != null) { - fCurrentTopLevelDelta.trigger = trigger; - ITaglibIndexDelta delta = fCurrentTopLevelDelta; - fCurrentTopLevelDelta = null; - fireTaglibDelta(delta); - } - } - - /** - * A check to see if the OSGI framework is shutting down. - * - * @return true if the System Bundle is stopped (ie. the framework is - * shutting down) - */ - boolean frameworkIsShuttingDown() { - // in the Framework class there's a note: - // set the state of the System Bundle to STOPPING. - // this must be done first according to section 4.19.2 from the OSGi - // R3 spec. - boolean shuttingDown = !Platform.isRunning() || Platform.getBundle(OSGI_FRAMEWORK_ID).getState() == Bundle.STOPPING; - return shuttingDown; - } - - ProjectDescription getDescription(IProject project) { - ProjectDescription description = null; - if (isInitialized()) { - description = (ProjectDescription) fProjectDescriptions.get(project); - } - return description; - } - - private String getState() { - String state = JSPCorePlugin.getDefault().getPluginPreferences().getString(TaglibIndex.class.getName()); - return state; - } - - private IPath getTaglibIndexStateLocation() { - return JSPCorePlugin.getDefault().getStateLocation().append("taglibindex/"); - } - - private void internalAddTaglibIndexListener(ITaglibIndexListener listener) { - try { - LOCK.acquire(); - if (fTaglibIndexListeners == null) { - fTaglibIndexListeners = new ITaglibIndexListener[]{listener}; - } - else { - List listeners = new ArrayList(Arrays.asList(fTaglibIndexListeners)); - if (!listeners.contains(listener)) { - listeners.add(listener); - } - fTaglibIndexListeners = (ITaglibIndexListener[]) listeners.toArray(new ITaglibIndexListener[0]); - } - } - finally { - LOCK.release(); - } - } - - private ITaglibRecord[] internalGetAvailableTaglibRecords(IPath path) { - ITaglibRecord[] records = new ITaglibRecord[0]; - if (path.segmentCount() > 0) { - IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(path.segment(0)); - if (project.isAccessible()) { - ProjectDescription description = createDescription(project); - List availableRecords = description.getAvailableTaglibRecords(path); - - // ICatalog catalog = - // XMLCorePlugin.getDefault().getDefaultXMLCatalog(); - // while (catalog != null) { - // ICatalogEntry[] entries = catalog.getCatalogEntries(); - // for (int i = 0; i < entries.length; i++) { - // // System.out.println(entries[i].getURI()); - // } - // INextCatalog[] nextCatalogs = catalog.getNextCatalogs(); - // for (int i = 0; i < nextCatalogs.length; i++) { - // ICatalogEntry[] entries2 = - // nextCatalogs[i].getReferencedCatalog().getCatalogEntries(); - // for (int j = 0; j < entries2.length; j++) { - // // System.out.println(entries2[j].getURI()); - // } - // } - // } - - records = (ITaglibRecord[]) availableRecords.toArray(records); - } - } - return records; - } - - private IPath internalGetContextRoot(IPath path) { - IFile baseResource = FileBuffers.getWorkspaceFileAtLocation(path); - if (baseResource != null && baseResource.getProject().isAccessible()) { - IProject project = baseResource.getProject(); - ProjectDescription description = getInstance().createDescription(project); - IPath rootPath = description.getLocalRoot(baseResource.getFullPath()); - return rootPath; - } - // try to handle out-of-workspace paths - IPath root = path.makeAbsolute(); - while (root.segmentCount() > 0 && !root.isRoot()) - root = root.removeLastSegments(1); - return root; - } - - private void internalRemoveTaglibIndexListener(ITaglibIndexListener listener) { - try { - LOCK.acquire(); - if (fTaglibIndexListeners != null) { - List listeners = new ArrayList(Arrays.asList(fTaglibIndexListeners)); - listeners.remove(listener); - fTaglibIndexListeners = (ITaglibIndexListener[]) listeners.toArray(new ITaglibIndexListener[0]); - } - } - finally { - LOCK.release(); - } - } - - private ITaglibRecord internalResolve(String basePath, final String reference, boolean crossProjects) { - IProject project = null; - ITaglibRecord resolved = null; - - Path baseIPath = new Path(basePath); - IResource baseResource = FileBuffers.getWorkspaceFileAtLocation(baseIPath); - - if (baseResource == null) { - IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot(); - // Try the base path as a folder first - if (baseIPath.segmentCount() > 1) { - baseResource = workspaceRoot.getFolder(baseIPath); - } - // If not a folder, then try base path as a file - if (baseResource != null && !baseResource.exists() && baseIPath.segmentCount() > 1) { - baseResource = workspaceRoot.getFile(baseIPath); - } - if (baseResource == null && baseIPath.segmentCount() == 1) { - baseResource = workspaceRoot.getProject(baseIPath.segment(0)); - } - } - - if (baseResource == null) { - /* - * https://bugs.eclipse.org/bugs/show_bug.cgi?id=116529 - * - * This method produces a less accurate result, but doesn't - * require that the file exist yet. - */ - IFile[] files = ResourcesPlugin.getWorkspace().getRoot().findFilesForLocation(baseIPath); - if (files.length > 0) - baseResource = files[0]; - } - if (baseResource != null) { - project = ResourcesPlugin.getWorkspace().getRoot().getProject(baseIPath.segment(0)); - if (project.isAccessible()) { - ProjectDescription description = createDescription(project); - resolved = description.resolve(basePath, reference); - } - } - - return resolved; - } - - boolean isIndexAvailable() { - return _instance.isInitialized() && ENABLED; - } - - /** - * Removes index file for the given project. - */ - private void removeIndex(IProject project) { - File indexFile = new File(computeIndexLocation(project.getFullPath())); - if (indexFile.exists()) { - indexFile.delete(); - } - } - - /** - * Removes index files. Used for maintenance and keeping the index folder - * a manageable size. - * - * @param staleOnly - - * if <b>true</b>, removes only the indexes for projects not - * open in the workspace, if <b>false</b>, removes all of the - * indexes - */ - private void removeIndexes(boolean staleOnly) { - String osPath = getTaglibIndexStateLocation().toOSString(); - File folder = new File(osPath); - if (!folder.isDirectory()) { - try { - folder.mkdir(); - } - catch (SecurityException e) { - } - } - - // remove any extraneous index files - IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects(); - List indexNames = new ArrayList(projects.length); - if (staleOnly) { - for (int i = 0; i < projects.length; i++) { - if (projects[i].isAccessible()) { - indexNames.add(computeIndexName(projects[i].getFullPath())); - } - } - } - - if (folder.isDirectory()) { - File[] files = folder.listFiles(); - for (int i = 0; files != null && i < files.length; i++) { - if (!indexNames.contains(files[i].getName())) - files[i].delete(); - } - } - } - - private void setState(String state) { - if (!state.equals(getState())) { - JSPCorePlugin.getDefault().getPluginPreferences().setValue(TaglibIndex.class.getName(), state); - JSPCorePlugin.getDefault().savePluginPreferences(); - } - } - - private void stop() { - if (isInitialized()) { - ResourcesPlugin.getWorkspace().removeResourceChangeListener(fResourceChangeListener); - JavaCore.removeElementChangedListener(fClasspathChangeListener); - - /* - * Clearing the existing saved states helps prune dead data from - * the index folder. - */ - removeIndexes(true); - - Iterator i = fProjectDescriptions.values().iterator(); - while (i.hasNext()) { - ProjectDescription description = (ProjectDescription) i.next(); - description.saveReferences(); - } - - fProjectDescriptions.clear(); - - setState(CLEAN); - fProjectDescriptions = null; - fResourceChangeListener = null; - fClasspathChangeListener = null; - setIntialized(false); - } - } - - private boolean isInitialized() { - return initialized; - } - - private void setIntialized(boolean intialized) { - this.initialized = intialized; - } -} |