[Vfs-status] Coding in progress

[Hans van Buitenen]

Coding of the project has started.

The current achievements are:
- There is a perl/sql script that creates a database and does some init 
stuff
- There is a simple txt perl-based client that can walk throug the 
directory tree
  There are not many commands yet but it already has commandline processing
  so adding commands is easy
- There is a start of an import+batch function that can read and import 
directories
  recursively
- The perl scripts have extended tracing abilities that show you what 
is going on
- The doc tree in cvs has a console listing (demo)

And last but not least:
The txt interface serves  as a prove of concept. The results of this are 
starting to show.
The database behaves as expected. It is possible to walk up and down a 
folder tree with
simple non-relational sql statements, just as I targeted to do. The 
structure is such that
moving a file or directory (tree) involves no more than changing one 
field in one record !!!


Some examples:

Question: Give me all items that are in folder "xyz"

Answer: Query in table "items" with field "container"=item ID of folder 
"xyz"

Question: Give me the full path of folder "xyz"

Answer:
1 - Get the item record of "xyz" read the container field. (Cointainer 
= I'm inside this item)
2 - Get the item record with the item ID you've just found
3 - Read the container field of that record
Keep doing this untill you hit th root dir,
while doing this concat the, path string.

This databse does exactly the opposite of what normal directories do.
- Directories store the items in them
- A vfs item only stores the item that it is in. (It's container)
So if you want to move an entire directory tree, all you do is change 
it's container field
to the item ID of the folder where you want it to move to.
(Only change the the top level folder of the tree you want to move)
that simple :o)