Chain

Chain multiple transformers together

Input/Output

The chain loader can accept any form of input, and produce any form of output.

In passes the initial input through a chain of other loaders, via the loader property. A list of loader driver names can be given to chain together those loaders with no properties. To provide properties, use a TOML array of tables and specify the full (driver = "name", ...) form.

Writing is not currently supported.

Usage examples

[[iris.loader]]
driver = "chain"
loaders = ["gzip", "csv"]

[[iris.loader]]
driver = "chain"
loaders = ["gzip", { driver = "tar", file = "iris.csv" }, "csv"]

[[chained.loader]]
driver = "chain"

    [[chained.loader.loaders]]
    driver = "gzip"

    [[chained.loader.loaders]]
    driver = "csv"

    [[chained.loader.loaders]]
    driver = "julia"
    input = "DataFrame"
    path = "scripts/custom_postprocessing.jl"
    type = "DataFrame"