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Loaders

In addition to those provided by rdf-loader-code, the barnard59-core package provides additional loaders to simplify the definition of pipelines.

p:Pipeline​

TBD

p:Variable(Name)​

TBD

p:FileContents​

Reads file from a given path and returns its raw contents.

note

p:FileContents is a literal node

caution

This loader may not be suitable for loading large files because they are synchronously put into memory

Basic usage​

@prefix code: <https://code.described.at/> .
@prefix p: <https://pipeline.described.at/> .

<step>
    code:arguments
        (
            "/full/path/myKeyFile.key"^^p:FileContents
        )
.

Path in variable​

The p:FileContents literal can also be the name of a variable.

@prefix code: <https://code.described.at/> .
@prefix p: <https://pipeline.described.at/> .

<pipeline>
    p:variables [
        p:variable [ p:name "KEY_PATH" ; p:value "/full/path/myKeyFile.key" ] ;
    ] ;
.

<step>
    code:arguments
        (
            "KEY_PATH"^^p:FileContents
        )
.

Home dir paths​

For convenience, bash-style paths stating with ~ are also supported.

@prefix code: <https://code.described.at/> .
@prefix p: <https://pipeline.described.at/> .

<step>
    a p:Step ;
    code:implementedBy
        [
            a code:EcmaScriptModule ;
            code:link <node:barnard59-ftp/list.js#default> ;
        ] ;
    code:arguments
        [
            code:name "privateKey" ;
            code:value "~/.ssh/id_ed25519"^^p:FileContents ;
        ] ;
.