/**
* Returns a MIME type of a document within an archive.
*
* @see DocumentsProvider.getDocumentType(String)
*/
public String getDocumentType(String documentId) throws FileNotFoundException {
Loader loader = null;
try {
loader = obtainInstance(documentId);
return loader.get().getDocumentType(documentId);
} finally {
releaseInstance(loader);
}
}
/**
* Returns metadata of a document within an archive.
*
* @see DocumentsProvider.queryDocument(String, String[])
*/
public Cursor queryDocument(String documentId, @Nullable String[] projection)
throws FileNotFoundException {
Loader loader = null;
try {
loader = obtainInstance(documentId);
return loader.get().queryDocument(documentId, projection);
} finally {
releaseInstance(loader);
}
}
@Override
public void entryRemoved(boolean evicted, String key, Loader oldValue, Loader newValue) {
oldValue.getWriteLock().lock();
try {
oldValue.get().close();
} catch (FileNotFoundException e) {
Log.e(TAG, "Failed to close an archive as it no longer exists.");
} finally {
oldValue.getWriteLock().unlock();
}
}
/**
* Opens a thumbnail of a file within an archive.
*
* @see DocumentsProvider.openDocumentThumbnail(String, Point, CancellationSignal))
*/
public AssetFileDescriptor openDocumentThumbnail(
String documentId, Point sizeHint, final CancellationSignal signal)
throws FileNotFoundException {
Loader loader = null;
try {
loader = obtainInstance(documentId);
return loader.get().openDocumentThumbnail(documentId, sizeHint, signal);
} finally {
releaseInstance(loader);
}
}
/**
* Opens a file within an archive.
*
* @see DocumentsProvider.openDocument(String, String, CancellationSignal))
*/
public ParcelFileDescriptor openDocument(
String documentId, String mode, final CancellationSignal signal)
throws FileNotFoundException {
Loader loader = null;
try {
loader = obtainInstance(documentId);
return loader.get().openDocument(documentId, mode, signal);
} finally {
releaseInstance(loader);
}
}
/**
* Returns true if a document within an archive is a child or any descendant of the archive
* document or another document within the archive.
*
* @see DocumentsProvider.isChildDocument(String, String)
*/
public boolean isChildDocument(String parentDocumentId, String documentId) {
Loader loader = null;
try {
loader = obtainInstance(documentId);
return loader.get().isChildDocument(parentDocumentId, documentId);
} catch (FileNotFoundException e) {
throw new IllegalStateException(e);
} finally {
releaseInstance(loader);
}
}