/*******************************************************************************
* Copyright (c) 2000, 2011 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;
import org.eclipse.core.runtime.*;
import org.eclipse.jdt.core.search.*;
import org.eclipse.jdt.internal.core.index.IndexLocation;
import org.eclipse.jdt.internal.core.search.indexing.BinaryIndexer;
import org.eclipse.jdt.internal.core.search.indexing.SourceIndexer;
import org.eclipse.jdt.internal.core.search.matching.MatchLocator;
/**
* A search participant describes a particular extension to a generic search mechanism, allowing thus to
* perform combined search actions which will involve all required participants
*
* A search scope defines which participants are involved.
*
* A search participant is responsible for holding index files, and selecting the appropriate ones to feed to
* index queries. It also can map a document path to an actual document (note that documents could live outside
* the workspace or no exist yet, and thus aren't just resources).
*/
public class JavaSearchParticipant extends SearchParticipant {
private ThreadLocal indexSelector = new ThreadLocal();
/* (non-Javadoc)
* @see org.eclipse.jdt.core.search.SearchParticipant#beginSearching()
*/
public void beginSearching() {
super.beginSearching();
this.indexSelector.set(null);
}
/* (non-Javadoc)
* @see org.eclipse.jdt.core.search.SearchParticipant#doneSearching()
*/
public void doneSearching() {
this.indexSelector.set(null);
super.doneSearching();
}
/* (non-Javadoc)
* @see org.eclipse.jdt.core.search.SearchParticipant#getName()
*/
public String getDescription() {
return "Java"; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.jdt.core.search.SearchParticipant#getDocument(String)
*/
public SearchDocument getDocument(String documentPath) {
return new JavaSearchDocument(documentPath, this);
}
/* (non-Javadoc)
* @see org.eclipse.jdt.core.search.SearchParticipant#indexDocument(SearchDocument)
*/
public void indexDocument(SearchDocument document, IPath indexPath) {
// TODO must verify that the document + indexPath match, when this is not called from scheduleDocumentIndexing
document.removeAllIndexEntries(); // in case the document was already indexed
String documentPath = document.getPath();
if (org.eclipse.jdt.internal.core.util.Util.isJavaLikeFileName(documentPath)) {
new SourceIndexer(document).indexDocument();
} else if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(documentPath)) {
new BinaryIndexer(document).indexDocument();
}
}
/* (non-Javadoc)
* @see SearchParticipant#locateMatches(SearchDocument[], SearchPattern, IJavaSearchScope, SearchRequestor, IProgressMonitor)
*/
public void locateMatches(SearchDocument[] indexMatches, SearchPattern pattern,
IJavaSearchScope scope, SearchRequestor requestor, IProgressMonitor monitor) throws CoreException {
MatchLocator matchLocator =
new MatchLocator(
pattern,
requestor,
scope,
monitor
);
/* eliminating false matches and locating them */
if (monitor != null && monitor.isCanceled()) throw new OperationCanceledException();
matchLocator.locateMatches(indexMatches);
}
/* (non-Javadoc)
* @see org.eclipse.jdt.core.search.SearchParticipant#selectIndexes(org.eclipse.jdt.core.search.SearchQuery, org.eclipse.jdt.core.search.SearchContext)
*/
public IPath[] selectIndexes(SearchPattern pattern, IJavaSearchScope scope) {
IndexSelector selector = (IndexSelector) this.indexSelector.get();
if (selector == null) {
selector = new IndexSelector(scope, pattern);
this.indexSelector.set(selector);
}
IndexLocation[] urls = selector.getIndexLocations();
IPath[] paths = new IPath[urls.length];
for (int i = 0; i < urls.length; i++) {
paths[i] = new Path(urls[i].getIndexFile().getPath());
}
return paths;
}
public IndexLocation[] selectIndexURLs(SearchPattern pattern, IJavaSearchScope scope) {
IndexSelector selector = (IndexSelector) this.indexSelector.get();
if (selector == null) {
selector = new IndexSelector(scope, pattern);
this.indexSelector.set(selector);
}
return selector.getIndexLocations();
}
}