Existing Pluggable Blob Storage APIs

The APIs listed on this page have the following attributes in common:

They each provide a means to read and write persistent files with unique ids.
They were designed with back-end pluggability in mind.
They are not concerned with directory/folder semantics.
They are not concerned with versioning semantics, but may allow files to be overwritten.

API	Type	Used By	Implementations
JackRabbit BLOBStore	Java	JackRabbit	DbBlobStore FileSystemBLOBStore
Cocoon Daisy BlobStore	Java	Cocoon	FSBlobStore
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="e9091b6b-6816-4880-8a8b-fad9333f44f3"><ac:plain-text-body><![CDATA[	[DSpace 2 BitStore	http://wiki.dspace.org/index.php/DSpace_2.0/Pluggable_Storage]	Java	DSpace	DSBitStore [SRBBitStore	http://wiki.dspace.org/static_files/f/f0/SRBBitStore.java] [S3BitStore	http://wiki.dspace.org/static_files/6/67/S3BitStore.java] [FedoraBitStore	http://wiki.dspace.org/index.php/Google_Summer_of_Code_2008_Fedora_Integration] [HoneycombBitStore	http://article.gmane.org/gmane.comp.db.dspace.user/3681]	]]></ac:plain-text-body></ac:structured-macro>
Fedora Repository ILowLevelStorage	Java	Fedora
MediaWiki FileStore	Java	MediaWiki
SNIA XAM API	Java / C	*	FileNet?
Topaz OTM BlobStore	Java	OTM
Windows Sharepoint EBS	COM	MS SQL Server

Ids
- Supported ID types?
- Can be store-generated?
- Can be user-provided?
Readonly Metadata
- Which are impls expected to provide for reading?
Settable Metadata
- Which are impls expected to provide for writing?
- Extensible?
Transactional
- Supported by API?
- Required by impls?
- Two-phase commit?

DSpace 1 BitstreamStorageManager - Hardcodes support for either local filesystem or SRB
JAF FileDataSource - Assumes local files
Eclipse - BlobStore- Assumes local paths and files