[xwiki-devs] [proposal] New module to handle large binary objects in a generic way.

In light of the need for better attachment handling, I spent the past few days working on the basic framework for a new module to support large objects. The code can be viewed here: http://svn.xwiki.org/svnroot/xwiki/contrib/sandbox/xwiki-blob/src/main/java… Use case #1: Multiple methods of storing content and the ability to define more. Use case #2: Thread safe locking to prevent concurrent modifications from damaging content. Use case #3: ACID commit/rollback protection. The API user has 2 access points. BinaryObject is a thread safe interface with ACID and option of using OutputStream or InputStream to set and get data. StorageItem is a simplistic interface modeled after a small subset of the methods in java.io.File. If you create a component which implements StorageItem, BinaryObjectProvider will allow you to access a BinaryObject which uses your StorageItem for persistent storage. Example: @Requirement private BinaryObjectProvider provider; private BinaryObject binaryObj; public void initialize() { this.binaryObj = this.provider.get("myImpl"); } "myImpl" is the hint for the StorageItem which you may define. The next step is of course to add versioning support but I think this will provide a solid foundation to build that on. WDYT? Caleb