synchronized DocumentArchive get() throws FileNotFoundException {
if (mArchive != null) {
return mArchive;
}
try {
if (mLocalFile != null) {
mArchive =
DocumentArchive.createForLocalFile(
mProvider.getContext(),
mLocalFile,
mId.mArchiveId,
mIdDelimiter,
mNotificationUri);
} else {
mArchive =
DocumentArchive.createForParcelFileDescriptor(
mProvider.getContext(),
mProvider.openDocument(mId.mArchiveId, "r", null /* signal */),
mId.mArchiveId,
mIdDelimiter,
mNotificationUri);
}
} catch (IOException e) {
throw new IllegalStateException(e);
}
return mArchive;
}
private Loader getInstanceUncheckedLocked(String documentId) throws FileNotFoundException {
try {
final ParsedDocumentId id = ParsedDocumentId.fromDocumentId(documentId, mIdDelimiter);
if (mArchives.get(id.mArchiveId) != null) {
return mArchives.get(id.mArchiveId);
}
final Cursor cursor =
mProvider.queryDocument(
id.mArchiveId, new String[] {Document.COLUMN_MIME_TYPE, COLUMN_LOCAL_FILE_PATH});
cursor.moveToFirst();
final String mimeType = cursor.getString(cursor.getColumnIndex(Document.COLUMN_MIME_TYPE));
Preconditions.checkArgument(isSupportedArchiveType(mimeType), "Unsupported archive type.");
final int columnIndex = cursor.getColumnIndex(COLUMN_LOCAL_FILE_PATH);
final String localFilePath = columnIndex != -1 ? cursor.getString(columnIndex) : null;
final File localFile = localFilePath != null ? new File(localFilePath) : null;
final Uri notificationUri = cursor.getNotificationUri();
final Loader loader = new Loader(mProvider, localFile, id, mIdDelimiter, notificationUri);
// Remove the instance from mArchives collection once the archive file changes.
if (notificationUri != null) {
final LruCache<String, Loader> finalArchives = mArchives;
mProvider
.getContext()
.getContentResolver()
.registerContentObserver(
notificationUri,
false,
new ContentObserver(null) {
@Override
public void onChange(boolean selfChange, Uri uri) {
synchronized (mArchives) {
final Loader currentLoader = mArchives.get(id.mArchiveId);
if (currentLoader == loader) {
mArchives.remove(id.mArchiveId);
}
}
}
});
}
mArchives.put(id.mArchiveId, loader);
return loader;
} catch (IOException e) {
// DocumentsProvider doesn't use IOException. For consistency convert it to
// IllegalStateException.
throw new IllegalStateException(e);
}
}