/*******************************************************************************
* 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 org.eclipse.core.filesystem.EFS;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceProxy;
import org.eclipse.core.resources.IResourceProxyVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
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 IndexBinaryFolder extends IndexRequest {
IContainer folder;
public IndexBinaryFolder(IContainer folder, IndexManager manager) {
super(folder.getFullPath(), manager);
this.folder = folder;
}
public boolean equals(Object o) {
if (o instanceof IndexBinaryFolder)
return this.folder.equals(((IndexBinaryFolder) o).folder);
return false;
}
/**
* Ensure consistency of a folder 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.folder.isAccessible()) return true; // nothing to do
Index index = this.manager.getIndexForUpdate(this.containerPath, true, /*reuse index file*/ true /*create if none*/);
if (index == null) return true;
ReadWriteMonitor monitor = index.monitor;
if (monitor == null) return true; // index got deleted since acquired
try {
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) {
this.folder.accept(new IResourceProxyVisitor() {
public boolean visit(IResourceProxy proxy) {
if (IndexBinaryFolder.this.isCancelled) return false;
if (proxy.getType() == IResource.FILE) {
if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(proxy.getName())) {
IFile file = (IFile) proxy.requestResource();
String containerRelativePath = Util.relativePath(file.getFullPath(), IndexBinaryFolder.this.containerPath.segmentCount());
indexedFileNames.put(containerRelativePath, file);
}
return false;
}
return true;
}
}, IResource.NONE);
} else {
for (int i = 0; i < max; i++) {
indexedFileNames.put(paths[i], DELETED);
}
final long indexLastModified = index.getIndexFile().lastModified();
this.folder.accept(
new IResourceProxyVisitor() {
public boolean visit(IResourceProxy proxy) throws CoreException {
if (IndexBinaryFolder.this.isCancelled) return false;
if (proxy.getType() == IResource.FILE) {
if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(proxy.getName())) {
IFile file = (IFile) proxy.requestResource();
URI location = file.getLocationURI();
if (location != null) {
String containerRelativePath = Util.relativePath(file.getFullPath(), IndexBinaryFolder.this.containerPath.segmentCount());
indexedFileNames.put(containerRelativePath,
indexedFileNames.get(containerRelativePath) == null
|| indexLastModified <
EFS.getStore(location).fetchInfo().getLastModified()
? (Object) file
: (Object) OK);
}
}
return false;
}
return true;
}
},
IResource.NONE
);
}
Object[] names = indexedFileNames.keyTable;
Object[] values = indexedFileNames.valueTable;
for (int i = 0, length = names.length; i < length; 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.addBinary((IFile) value, this.containerPath);
}
}
}
}
// request to save index when all class files 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.folder + " 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.folder + " because of the following exception:", System.err); //$NON-NLS-1$ //$NON-NLS-2$
e.printStackTrace();
}
this.manager.removeIndex(this.containerPath);
return false;
} finally {
monitor.exitRead(); // free read lock
}
return true;
}
public int hashCode() {
return this.folder.hashCode();
}
protected Integer updatedIndexState() {
return IndexManager.REBUILDING_STATE;
}
public String toString() {
return "indexing binary folder " + this.folder.getFullPath(); //$NON-NLS-1$
}
}