Package org.eclipse.jdt.internal.core.search.indexing

Source Code of org.eclipse.jdt.internal.core.search.indexing.IndexAllProject

/*******************************************************************************
* Copyright (c) 2000, 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.jdt.internal.core.search.indexing;

import java.io.IOException;
import java.net.URI;
import java.util.HashSet;

import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceProxy;
import org.eclipse.core.resources.IResourceProxyVisitor;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.internal.compiler.SourceElementParser;
import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
import org.eclipse.jdt.internal.core.ClasspathEntry;
import org.eclipse.jdt.internal.core.JavaProject;
import org.eclipse.jdt.internal.core.index.Index;
import org.eclipse.jdt.internal.core.search.processing.JobManager;
import org.eclipse.jdt.internal.core.util.Util;

public class IndexAllProject extends IndexRequest {
  IProject project;

  public IndexAllProject(IProject project, IndexManager manager) {
    super(project.getFullPath(), manager);
    this.project = project;
  }
  public boolean equals(Object o) {
    if (o instanceof IndexAllProject)
      return this.project.equals(((IndexAllProject) o).project);
    return false;
  }
  /**
   * 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;
    if (!this.project.isAccessible()) return true; // nothing to do

    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);
            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 /*create if none*/);
        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 /*create if none*/);
      if (index == null) return true;
      monitor = index.monitor;
      if (monitor == null) return true; // index got deleted since acquired

      monitor.enterRead(); // ask permission to read

      String[] paths = index.queryDocumentNames(""); // all file names //$NON-NLS-1$
      int max = paths == null ? 0 : paths.length;
      final SimpleLookupTable indexedFileNames = new SimpleLookupTable(max == 0 ? 33 : max + 11);
      final String OK = "OK"; //$NON-NLS-1$
      final String DELETED = "DELETED"; //$NON-NLS-1$
      if (paths != null) {
        for (int i = 0; i < max; i++)
          indexedFileNames.put(paths[i], DELETED);
      }
      final long indexLastModified = max == 0 ? 0L : index.getIndexFile().lastModified();

      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(), 1/*remove project segment*/), 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(), 1/*remove project segment*/);
                        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/*requestor will be set by indexer*/);
      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:", System.err); //$NON-NLS-1$ //$NON-NLS-2$
        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:", System.err); //$NON-NLS-1$ //$NON-NLS-2$
        e.printStackTrace();
      }
      this.manager.removeIndex(this.containerPath);
      return false;
    } finally {
      if (monitor != null)
        monitor.exitRead(); // free read lock
    }
    return true;
  }
  public int hashCode() {
    return this.project.hashCode();
  }
  protected Integer updatedIndexState() {
    return IndexManager.REBUILDING_STATE;
  }
  public String toString() {
    return "indexing project " + this.project.getFullPath(); //$NON-NLS-1$
  }
}
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