zordfsdb #2

🏷 myapp

🏷 idea

Created:   2024-08-12
Copyright: CC-BY-SA 4.0
Language:  en

I wrote about my new file system based datebase earlier:

zordfsdb

Update

I decided to split commands into two layers: value and object. For value layer there are already implemented commands what operates directly on value by given path. And for object layer I added two more commands what operates directly on node:

• GetNode (created earlier) - get node - it's not important the type. It can be list, object or single key/value object.
• CreateNode - create directory in given path. Will it be object or list - it depends on future actions.
• AddObject - create abcex indexed directory as object. Later you can add key/values

And there other commands what suits for all or are for special case (already created earlier):

• Init - get db object
• Keys - get list of object keys or list index
• Del - remove key/value, list, object etc.

Object creation flow

For example I need structure:

/obj1
    |
    + key1 -- counter that increase
    + key2 -- date now
    + key3 -- special value

Your actions should be:

• db = Init("/")
• db.CreateNode("obj1")
• db.Inc("obj1.key1")
• db.Now("obj1.key2")
• db.Save("obj1.key3", "special value")

List creation flow

There is now structure validators or pattern (maybe for future), so everything should be under developer control.

For example I need structure:

/list1
    |
    + 0
    |   |
    |   + key1 -- special value
    |   + key2 -- special value 2
    + 1
        |
        + key1 -- special value
        + key2 -- special value 2

Your actions should be:

• db = Init("/")
• db.CreateNode("list1")
• id1 = db.AddObject("list1") <-- first id will be '0'
• db.Save("list1.0.key1", "special value")
• db.Save("list1.0.key2", "special value 2")
• id2 = db.AddObject("list1") <-- second id will be '1'
• db.Save("list1.1.key1", "special value")
• db.Save("list1.1.key2", "special value 2")

Future plans

For now I have everything what I needed but... If I will have time, it would be nice to have:

• list object validator or pattern with default values
• blob or file as value. Maybe it should be with special folder on root (__a) and key file should be link

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