path

path, concepts

A typical Lokad account contains two separate trees:

• The script tree, which contains all Envision scripts, synchronization scripts, and script sequences.
• The file tree, which contains all data files.

These are hierarchies of folders that can contain scripts (respectively, files) or nested folders. Each folder, script or file has a unique text identifier based on its location, which is called its path.

Paths are a very common concept in computing. Lokad uses / as the path separator.

Paths are case-sensitive and can include whitespace and Unicode characters.

Example paths:

• / is the path of the root folder that contains everything else.
• /input/catalog.csv is a typical path for a “catalog” input file uploaded to the account. It would appear in a read "/input/catalog.csv" statement, or in a schema '/input/catalog.csv' definition.
• /.utilities/Functions is a typical path for a module containing shared functions within an account. It would appear in an import "/.utilities/Functions" statement.

File-centric model

Lokad processes files rather than database tables. Scripts read immutable file snapshots and write new files atomically at the end of a run.