Dolphin Demo

Dolphin Demo is a Windows executable of a combined server and thick client that implements from scratch a limited subset of the Udanax-Gold capabilities. It supports fine grained links, versioning and differencing. Work has ceased for the moment while attention is focused on a Java implementation.

Implemented Features

Most of these features are just prototype grade and will require rework before reaching a level suitable for the end user in a stable, efficient hypertext system.

• Subset of Ent implementation - integer space, no canopies, position based
• Simple transclusions between content elements and Ent tree structure
• Works and editions
• History as frozen works
• Primitive endorsements
• Front-End text editor with browser on Works and editions
• Comparisons between arbitary editions - styled after pyxi by Ka-Ping Ye
• Links implemented by transclusions
• Simple persistence by saving entire works storage as atomic operation
• First pass at Fe-Be (or client/server) split
• Open source
• Test cases
• Executable demo for Windows platform (with fancy colours!)

Known Problems

• System slows down significantly for text longer than a few pages Prime problem here is just my un-optimized text editor implementation.
• Infrequent balancing of Ent tree by Splaying, as my splaying implementation currently duplicates too many internal SplitNodes.
• Leaf nodes are split too often in Ent, eg on creating a link that doesn't match existing leaf boundaries.
• UI for defining and following Links is very poor and limiting.