/*******************************************************************************
* 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 java.io.IOException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.jdt.core.search.*;
import org.eclipse.jdt.internal.core.JavaModelManager;
import org.eclipse.jdt.internal.core.index.Index;
import org.eclipse.jdt.internal.core.search.indexing.ReadWriteMonitor;
import org.eclipse.jdt.internal.core.search.matching.MatchLocator;
import org.eclipse.jdt.internal.core.search.processing.IJob;
import org.eclipse.jdt.internal.core.search.processing.JobManager;
import org.eclipse.jdt.internal.core.util.Util;
public class PatternSearchJob implements IJob {
protected SearchPattern pattern;
protected IJavaSearchScope scope;
protected SearchParticipant participant;
protected IndexQueryRequestor requestor;
protected boolean areIndexesReady;
protected long executionTime = 0;
public PatternSearchJob(SearchPattern pattern, SearchParticipant participant, IJavaSearchScope scope, IndexQueryRequestor requestor) {
this.pattern = pattern;
this.participant = participant;
this.scope = scope;
this.requestor = requestor;
}
public boolean belongsTo(String jobFamily) {
return true;
}
public void cancel() {
// search job is cancelled through progress
}
public void ensureReadyToRun() {
if (!this.areIndexesReady)
getIndexes(null/*progress*/); // may trigger some index recreation
}
public boolean execute(IProgressMonitor progressMonitor) {
if (progressMonitor != null && progressMonitor.isCanceled()) throw new OperationCanceledException();
boolean isComplete = COMPLETE;
this.executionTime = 0;
Index[] indexes = getIndexes(progressMonitor);
try {
int max = indexes.length;
if (progressMonitor != null)
progressMonitor.beginTask("", max); //$NON-NLS-1$
for (int i = 0; i < max; i++) {
isComplete &= search(indexes[i], progressMonitor);
if (progressMonitor != null) {
if (progressMonitor.isCanceled()) throw new OperationCanceledException();
progressMonitor.worked(1);
}
}
if (JobManager.VERBOSE)
Util.verbose("-> execution time: " + this.executionTime + "ms - " + this);//$NON-NLS-1$//$NON-NLS-2$
return isComplete;
} finally {
if (progressMonitor != null)
progressMonitor.done();
}
}
public Index[] getIndexes(IProgressMonitor progressMonitor) {
// acquire the in-memory indexes on the fly
IPath[] indexLocations = this.participant.selectIndexes(this.pattern, this.scope);
int length = indexLocations.length;
Index[] indexes = JavaModelManager.getIndexManager().getIndexes(indexLocations, progressMonitor);
this.areIndexesReady = indexes.length == length;
return indexes;
}
public String getJobFamily() {
return ""; //$NON-NLS-1$
}
public boolean search(Index index, IProgressMonitor progressMonitor) {
if (index == null) return COMPLETE;
if (progressMonitor != null && progressMonitor.isCanceled()) throw new OperationCanceledException();
ReadWriteMonitor monitor = index.monitor;
if (monitor == null) return COMPLETE; // index got deleted since acquired
try {
monitor.enterRead(); // ask permission to read
long start = System.currentTimeMillis();
MatchLocator.findIndexMatches(this.pattern, index, this.requestor, this.participant, this.scope, progressMonitor);
this.executionTime += System.currentTimeMillis() - start;
return COMPLETE;
} catch (IOException e) {
if (e instanceof java.io.EOFException)
e.printStackTrace();
return FAILED;
} finally {
monitor.exitRead(); // finished reading
}
}
public String toString() {
return "searching " + this.pattern.toString(); //$NON-NLS-1$
}
}