Examples with Index org.eclipse.jdt.internal.core.index.Index used on opensource projects

Example 1 with Index

use of org.eclipse.jdt.internal.core.index.Index in project che by eclipse.

the class IndexManager method removeIndexPath.

/**
     * Removes all indexes whose paths start with (or are equal to) the given path.
     */
public synchronized void removeIndexPath(IPath path) {
    if (JobManager.VERBOSE || DEBUG)
        //$NON-NLS-1$
        Util.verbose("removing index path " + path);
    Object[] keyTable = this.indexes.keyTable;
    Object[] valueTable = this.indexes.valueTable;
    IndexLocation[] locations = null;
    int max = this.indexes.elementSize;
    int count = 0;
    for (int i = 0, l = keyTable.length; i < l; i++) {
        IndexLocation indexLocation = (IndexLocation) keyTable[i];
        if (indexLocation == null)
            continue;
        if (indexLocation.startsWith(path)) {
            Index index = (Index) valueTable[i];
            index.monitor = null;
            if (locations == null)
                locations = new IndexLocation[max];
            locations[count++] = indexLocation;
            if (this.indexStates.get(indexLocation) == REUSE_STATE) {
                indexLocation.close();
            } else {
                if (DEBUG)
                    //$NON-NLS-1$
                    Util.verbose("removing index file " + indexLocation);
                indexLocation.delete();
            }
        } else {
            max--;
        }
    }
    if (locations != null) {
        for (int i = 0; i < count; i++) this.indexes.removeKey(locations[i]);
        removeIndexesState(locations);
        if (this.participantsContainers != null) {
            boolean update = false;
            for (int i = 0; i < count; i++) {
                if (this.participantsContainers.get(locations[i]) != null) {
                    update = true;
                    this.participantsContainers.removeKey(locations[i]);
                }
            }
            if (update)
                writeParticipantsIndexNamesFile();
        }
    }
}

Example 2 with Index

use of org.eclipse.jdt.internal.core.index.Index in project che by eclipse.

the class IndexManager method cleanUpIndexes.

/*
     * Removes unused indexes from disk.
     */
public void cleanUpIndexes() {
    SimpleSet knownPaths = new SimpleSet();
    IJavaSearchScope scope = BasicSearchEngine.createWorkspaceScope();
    PatternSearchJob job = new PatternSearchJob(null, SearchEngine.getDefaultSearchParticipant(), scope, null);
    Index[] selectedIndexes = job.getIndexes(null);
    for (int i = 0, l = selectedIndexes.length; i < l; i++) {
        IndexLocation IndexLocation = selectedIndexes[i].getIndexLocation();
        knownPaths.add(IndexLocation);
    }
    if (this.indexStates != null) {
        Object[] keys = this.indexStates.keyTable;
        IndexLocation[] locations = new IndexLocation[this.indexStates.elementSize];
        int count = 0;
        for (int i = 0, l = keys.length; i < l; i++) {
            IndexLocation key = (IndexLocation) keys[i];
            if (key != null && !knownPaths.includes(key))
                locations[count++] = key;
        }
        if (count > 0)
            removeIndexesState(locations);
    }
    deleteIndexFiles(knownPaths);
}

Example 3 with Index

use of org.eclipse.jdt.internal.core.index.Index in project che by eclipse.

the class IndexAllProject method execute.

/**
     * Ensure consistency of a project index. Need to walk all nested resources,
     * and discover resources which have either been changed, added or deleted
     * since the index was produced.
     */
public boolean execute(IProgressMonitor progressMonitor) {
    if (this.isCancelled || progressMonitor != null && progressMonitor.isCanceled())
        return true;
    // nothing to do
    if (!this.project.isAccessible())
        return true;
    ReadWriteMonitor monitor = null;
    try {
        // Get source folder entries. Libraries are done as a separate job
        JavaProject javaProject = (JavaProject) JavaCore.create(this.project);
        // Do not create marker while getting raw classpath (see bug 41859)
        IClasspathEntry[] entries = javaProject.getRawClasspath();
        int length = entries.length;
        IClasspathEntry[] sourceEntries = new IClasspathEntry[length];
        int sourceEntriesNumber = 0;
        for (int i = 0; i < length; i++) {
            IClasspathEntry entry = entries[i];
            if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE)
                sourceEntries[sourceEntriesNumber++] = entry;
        }
        if (sourceEntriesNumber == 0) {
            IPath projectPath = javaProject.getPath();
            for (int i = 0; i < length; i++) {
                IClasspathEntry entry = entries[i];
                if (entry.getEntryKind() == IClasspathEntry.CPE_LIBRARY && entry.getPath().equals(projectPath)) {
                    // the project is also a library folder (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=89815)
                    // ensure a job exists to index it as a binary folder
                    this.manager.indexLibrary(projectPath, this.project, ((ClasspathEntry) entry).getLibraryIndexLocation());
                    return true;
                }
            }
            // nothing to index but want to save an empty index file so its not 'rebuilt' when part of a search request
            Index index = this.manager.getIndexForUpdate(this.containerPath, true, /*reuse index file*/
            true);
            if (index != null)
                this.manager.saveIndex(index);
            return true;
        }
        if (sourceEntriesNumber != length)
            System.arraycopy(sourceEntries, 0, sourceEntries = new IClasspathEntry[sourceEntriesNumber], 0, sourceEntriesNumber);
        Index index = this.manager.getIndexForUpdate(this.containerPath, true, /*reuse index file*/
        true);
        if (index == null)
            return true;
        monitor = index.monitor;
        // index got deleted since acquired
        if (monitor == null)
            return true;
        // ask permission to read
        monitor.enterRead();
        // all file names //$NON-NLS-1$
        String[] paths = index.queryDocumentNames("");
        int max = paths == null ? 0 : paths.length;
        final SimpleLookupTable indexedFileNames = new SimpleLookupTable(max == 0 ? 33 : max + 11);
        //$NON-NLS-1$
        final String OK = "OK";
        //$NON-NLS-1$
        final String DELETED = "DELETED";
        if (paths != null) {
            for (int i = 0; i < max; i++) indexedFileNames.put(paths[i], DELETED);
        }
        final long indexLastModified = max == 0 ? 0L : index.getIndexLastModified();
        IWorkspaceRoot root = this.project.getWorkspace().getRoot();
        for (int i = 0; i < sourceEntriesNumber; i++) {
            if (this.isCancelled)
                return false;
            IClasspathEntry entry = sourceEntries[i];
            IResource sourceFolder = root.findMember(entry.getPath());
            if (sourceFolder != null) {
                // collect output locations if source is project (see http://bugs.eclipse.org/bugs/show_bug.cgi?id=32041)
                final HashSet outputs = new HashSet();
                if (sourceFolder.getType() == IResource.PROJECT) {
                    // Do not create marker while getting output location (see bug 41859)
                    outputs.add(javaProject.getOutputLocation());
                    for (int j = 0; j < sourceEntriesNumber; j++) {
                        IPath output = sourceEntries[j].getOutputLocation();
                        if (output != null) {
                            outputs.add(output);
                        }
                    }
                }
                final boolean hasOutputs = !outputs.isEmpty();
                final char[][] inclusionPatterns = ((ClasspathEntry) entry).fullInclusionPatternChars();
                final char[][] exclusionPatterns = ((ClasspathEntry) entry).fullExclusionPatternChars();
                if (max == 0) {
                    sourceFolder.accept(new IResourceProxyVisitor() {

                        public boolean visit(IResourceProxy proxy) {
                            if (IndexAllProject.this.isCancelled)
                                return false;
                            switch(proxy.getType()) {
                                case IResource.FILE:
                                    if (org.eclipse.jdt.internal.core.util.Util.isJavaLikeFileName(proxy.getName())) {
                                        IFile file = (IFile) proxy.requestResource();
                                        if (exclusionPatterns != null || inclusionPatterns != null)
                                            if (Util.isExcluded(file, inclusionPatterns, exclusionPatterns))
                                                return false;
                                        indexedFileNames.put(Util.relativePath(file.getFullPath(), project.getFullPath().segmentCount()), file);
                                    }
                                    return false;
                                case IResource.FOLDER:
                                    if (exclusionPatterns != null && inclusionPatterns == null) {
                                        // if there are inclusion patterns then we must walk the children
                                        if (Util.isExcluded(proxy.requestFullPath(), inclusionPatterns, exclusionPatterns, true))
                                            return false;
                                    }
                                    if (hasOutputs && outputs.contains(proxy.requestFullPath()))
                                        return false;
                            }
                            return true;
                        }
                    }, IResource.NONE);
                } else {
                    sourceFolder.accept(new IResourceProxyVisitor() {

                        public boolean visit(IResourceProxy proxy) throws CoreException {
                            if (IndexAllProject.this.isCancelled)
                                return false;
                            switch(proxy.getType()) {
                                case IResource.FILE:
                                    if (org.eclipse.jdt.internal.core.util.Util.isJavaLikeFileName(proxy.getName())) {
                                        IFile file = (IFile) proxy.requestResource();
                                        URI location = file.getLocationURI();
                                        if (location == null)
                                            return false;
                                        if (exclusionPatterns != null || inclusionPatterns != null)
                                            if (Util.isExcluded(file, inclusionPatterns, exclusionPatterns))
                                                return false;
                                        String relativePathString = Util.relativePath(file.getFullPath(), project.getFullPath().segmentCount());
                                        indexedFileNames.put(relativePathString, indexedFileNames.get(relativePathString) == null || indexLastModified < EFS.getStore(location).fetchInfo().getLastModified() ? (Object) file : (Object) OK);
                                    }
                                    return false;
                                case IResource.FOLDER:
                                    if (exclusionPatterns != null || inclusionPatterns != null)
                                        if (Util.isExcluded(proxy.requestResource(), inclusionPatterns, exclusionPatterns))
                                            return false;
                                    if (hasOutputs && outputs.contains(proxy.requestFullPath()))
                                        return false;
                            }
                            return true;
                        }
                    }, IResource.NONE);
                }
            }
        }
        SourceElementParser parser = this.manager.getSourceElementParser(javaProject, null);
        Object[] names = indexedFileNames.keyTable;
        Object[] values = indexedFileNames.valueTable;
        for (int i = 0, namesLength = names.length; i < namesLength; i++) {
            String name = (String) names[i];
            if (name != null) {
                if (this.isCancelled)
                    return false;
                Object value = values[i];
                if (value != OK) {
                    if (value == DELETED)
                        this.manager.remove(name, this.containerPath);
                    else
                        this.manager.addSource((IFile) value, this.containerPath, parser);
                }
            }
        }
        // request to save index when all cus have been indexed... also sets state to SAVED_STATE
        this.manager.request(new SaveIndex(this.containerPath, this.manager));
    } catch (CoreException e) {
        if (JobManager.VERBOSE) {
            Util.verbose("-> failed to index " + this.project + " because of the following exception:", //$NON-NLS-1$ //$NON-NLS-2$
            System.err);
            e.printStackTrace();
        }
        this.manager.removeIndex(this.containerPath);
        return false;
    } catch (IOException e) {
        if (JobManager.VERBOSE) {
            Util.verbose("-> failed to index " + this.project + " because of the following exception:", //$NON-NLS-1$ //$NON-NLS-2$
            System.err);
            e.printStackTrace();
        }
        this.manager.removeIndex(this.containerPath);
        return false;
    } finally {
        if (monitor != null)
            // free read lock
            monitor.exitRead();
    }
    return true;
}

Example 4 with Index

use of org.eclipse.jdt.internal.core.index.Index in project che by eclipse.

the class IndexManager method saveIndexes.

/**
     * Commit all index memory changes to disk
     */
public void saveIndexes() {
    // only save cached indexes... the rest were not modified
    ArrayList toSave = new ArrayList();
    synchronized (this) {
        Object[] valueTable = this.indexes.valueTable;
        for (int i = 0, l = valueTable.length; i < l; i++) {
            Index index = (Index) valueTable[i];
            if (index != null)
                toSave.add(index);
        }
    }
    boolean allSaved = true;
    for (int i = 0, length = toSave.size(); i < length; i++) {
        Index index = (Index) toSave.get(i);
        ReadWriteMonitor monitor = index.monitor;
        // index got deleted since acquired
        if (monitor == null)
            continue;
        try {
            // take read lock before checking if index has changed
            // don't take write lock yet since it can cause a deadlock (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=50571)
            monitor.enterRead();
            if (index.hasChanged()) {
                if (monitor.exitReadEnterWrite()) {
                    try {
                        saveIndex(index);
                    } catch (IOException e) {
                        if (JobManager.VERBOSE) {
                            //$NON-NLS-1$
                            Util.verbose("-> got the following exception while saving:", System.err);
                            e.printStackTrace();
                        }
                        allSaved = false;
                    } finally {
                        monitor.exitWriteEnterRead();
                    }
                } else {
                    allSaved = false;
                }
            }
        } finally {
            monitor.exitRead();
        }
    }
    if (this.participantsContainers != null && this.participantUpdated) {
        writeParticipantsIndexNamesFile();
        this.participantUpdated = false;
    }
    this.needToSave = !allSaved;
}

Example 5 with Index

use of org.eclipse.jdt.internal.core.index.Index in project che by eclipse.

the class IndexManager method recreateIndex.

/**
     * Recreates the index for a given path, keeping the same read-write monitor.
     * Returns the new empty index or null if it didn't exist before.
     * Warning: Does not check whether index is consistent (not being used)
     */
public synchronized Index recreateIndex(IPath containerPath) {
    // only called to over write an existing cached index...
    String containerPathString = containerPath.getDevice() == null ? containerPath.toString() : containerPath.toOSString();
    try {
        // Path is already canonical
        IndexLocation indexLocation = computeIndexLocation(containerPath);
        Index index = getIndex(indexLocation);
        ReadWriteMonitor monitor = index == null ? null : index.monitor;
        if (JobManager.VERBOSE)
            //$NON-NLS-1$ //$NON-NLS-2$
            Util.verbose("-> recreating index: " + indexLocation + " for path: " + containerPathString);
        index = new Index(indexLocation, containerPathString, false);
        this.indexes.put(indexLocation, index);
        index.monitor = monitor;
        return index;
    } catch (IOException e) {
        // The file could not be created. Possible reason: the project has been deleted.
        if (JobManager.VERBOSE) {
            //$NON-NLS-1$
            Util.verbose("-> failed to recreate index for path: " + containerPathString);
            e.printStackTrace();
        }
        return null;
    }
}