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Merge "Update JavaDoc in MtpDatabase."

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Daichi Hirono
2015-10-29 00:04:58 +00:00
committed by Android (Google) Code Review
parent bef461f612 59686f6c35
commit 3147977a57
1 changed files with 9 additions and 2 deletions
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11
packages/MtpDocumentsProvider/src/com/android/mtp/MtpDatabase.java
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@@ -20,8 +20,15 @@ import java.nio.charset.StandardCharsets;
* Database for MTP objects.
* The object handle which is identifier for object in MTP protocol is not stable over sessions.
* When we resume the process, we need to remap our document ID with MTP's object handle.
* The database object remembers the map of document ID and fullpath, and helps to remap object
* handle and document ID by comparing fullpath.
*
* If the remote MTP device is backed by typical file system, the file name
* is unique among files in a directory. However, MTP protocol itself does
* not guarantee the uniqueness of name so we cannot use fullpath as ID.
*
* Instead of fullpath, we use artificial ID generated by MtpDatabase itself. The database object
* remembers the map of document ID and object handle, and remaps new object handle with document ID
* by comparing the directory structure and object name.
*
* TODO: Remove @VisibleForTesting annotation when we start to use this class.
*/
@VisibleForTesting