Dependency trees on server and client

[miranov25]

Data sources:

• bokeh data source:
  • downsampler (on the client)
  • compressed data source
• joins on clients
• histograms
• histogram projection and statistics (mean,median,rms)
• functions on server
• functions/aliases on clients

Dependency trees to be checked and visualized

Consistency checks to be done on server:

• Detection of cyclic dependency
• Topological sorting
• Checks if fully defined - all terminals exist for all dependencies
• For javascript function checks the syntax
  • optional (several libraries exist - https://stackoverflow.com/questions/10136319/executing-javascript-from-python)
  • based on Marian statement it is possible to test using Python builtin and dictionary of builtin javascript functions

[miranov25]

Some library with integrated visualization to be used or python dictionary

[miranov25]

Structure - representation to be decided, proposal using Python builtin https://stackoverflow.com/questions/14242295/build-a-dependency-graph-in-python

• Dictionary of entries
• Entry (Dictionary)
  • Name relative (per user)
    • [cdsName, columnName] - tuple of 2 strings
  • id (cryptic/number )
  • Dependency list - list of ids
  • Type
  • Reference to data

[miranov25]

Pull request above solved the issue partially. there are some parts missing:

• hints parsing
• hints in case of multi-data source