/**
* 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
IPath indexLocation = computeIndexLocation(containerPath);
Index index = (Index) this.indexes.get(indexLocation);
ReadWriteMonitor monitor = index == null ? null : index.monitor;
if (VERBOSE)
Util.verbose(
"-> recreating index: "
+ indexLocation
+ " for path: "
+ containerPathString); //$NON-NLS-1$ //$NON-NLS-2$
index =
new Index(indexLocation.toString(), containerPathString, false /* reuse index file */);
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 (VERBOSE) {
Util.verbose("-> failed to recreate index for path: " + containerPathString); // $NON-NLS-1$
e.printStackTrace();
}
return null;
}
}
public synchronized void jobWasCancelled(IPath containerPath) {
IPath indexLocation = computeIndexLocation(containerPath);
Index index = getIndex(indexLocation);
if (index != null) {
index.monitor = null;
this.indexes.remove(indexLocation);
}
updateIndexState(indexLocation, UNKNOWN_STATE);
}
/** Removes the index for a given path. This is a no-op if the index did not exist. */
public synchronized void removeIndex(IPath containerPath) {
if (VERBOSE) Util.verbose("removing index " + containerPath); // $NON-NLS-1$
IPath indexLocation = computeIndexLocation(containerPath);
Index index = getIndex(indexLocation);
File indexFile = null;
if (index != null) {
index.monitor = null;
indexFile = index.getIndexFile();
}
if (indexFile == null)
indexFile =
new File(
indexLocation.toOSString()); // index is not cached yet, but still want to delete the
// file
if (indexFile.exists()) indexFile.delete();
this.indexes.remove(indexLocation);
updateIndexState(indexLocation, null);
}
public void saveIndex(Index index) throws IOException {
// must have permission to write from the write monitor
if (index.hasChanged()) {
if (VERBOSE) Util.verbose("-> saving index " + index.getIndexFile()); // $NON-NLS-1$
index.save();
}
synchronized (this) {
IPath containerPath = new Path(index.containerPath);
if (this.jobEnd > this.jobStart) {
for (int i = this.jobEnd; i > this.jobStart; i--) { // skip the current job
IJob job = this.awaitingJobs[i];
if (job instanceof IndexRequest)
if (((IndexRequest) job).containerPath.equals(containerPath)) return;
}
}
IPath indexLocation = computeIndexLocation(containerPath);
updateIndexState(indexLocation, SAVED_STATE);
}
}
