Java source code modules aimed at forming the basis of a distributed, versioned, categorized, link-typable, multi-parent, node-graph repository. Since the fundamental unit in the system is the node, and since each node (ideally) represents one thought, the collection of nodes in the system and their interconnections represents "knowledge". KRNL, therefore, stands for "knowledge repository node libary". Or "knowledge representation, nodes, and lists". Or any reasonable combination thereof.

Contents

• EntityTypes.java
  

The definitions for the node types and list types in the system.
 

• AbstractEntity.java
  The fundamental class for the "atomic units" of a knowledge repository's internal structure.
  • AbstractMultiParentNode.java
    • StructureNode.java (has multiple sublists, as well)
    • CategoryNode.java (TBD)
  • AbstractVersionedEntity
    • AbstractContentNode.java
      • TextNode.java
      • InlineNode.java
         
• AbstractList.java (extends AbstractVersionedEntity, but listed here as a separate hierarchy)
  The fundamental class for list headers that define collections of nodes.
• ContentList.java
• StructureList.java
• CategoryList.java (TBD)
   
• Change-reporting interfaces
  • ContentChangeListener
  • StructureChangeListener
  • CategoryChangeListener
     
• Connection Classes
  • AbstractLink.java (extends AbstractContentNode)
    • UrlLink.java
    • NodeLink.java
  • LinkDisplayPolicy.java
  • ViewControl.java (TBD)
  • StructureLink.java (wraps a StructureNode)
     
• Author & Version information classes
  • UserID.java (a user ID, used for version stamps, ACLs, and author lists)
  • SystemId.java (identifies the current system)
  • VersionStamp.java (node stores original author, version stamp stores author of change)
  • AbstractVersionWrapper.java (points to a List or TextNode)
    • OldVersionWrapper.java (wraps an old version)
    • UndoVersionWrapper.java (wraps undo information to restore old version)
  • VersionControl.java (maintains list of unstamped versions, and adds times)
    
    

• AbstractUndo (for storing version information)
  • SimpleUndo (points to previous version of node)
  • AbstractUndoList (if needed, to undo list opertions)
    • UndoListEntryDelete
    • UndoListEntryMove
    • UndoListEntryAdd
  • UndoText (to undo text changes)
    At the moment, this is defined as simple replacement of the string in the node. In the future, this may well be something more sophisticated that specifies a region of text and describes the operation -- add, change, or delete.
     
• Access Controls

• AccessList.java (read & copy access)
  
• AuthorList.java (write and remove access, aka: a collaboration list)
  

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