Hermes: A ShExCSV to ShExC Translator

Hermes is developed and maintained by WESO Research Group. Hermes is a Java based library that allows to translate from Shape Expressions tabular formats like ShExCSV to the Shape Expressions Compact Syntax.

This library can be enveloped in to a rest api server and used form other languages but at the moment that feature is not provided within this repository. In order to see the roadmap of the project you can refeer to Long Term Roadmap (LTR) issue.

How to use

Once you have your environment ready you can start using Hermes from your CLI as follows:

hermes --prefixesFile=prefixes.csv --shapesFile=shapes.csv --outDir=./out

Prefixes File

The prefixes file is a CSV file that contains all the prefix declarations that will be used by the Shape Expressions that are in the shapes.csv file. The format of this file is as follows:

Prefix	URI
	http://example.org/
xsd	http://www.w3.org/2001/XMLSchema#
foaf	http://xmlns.com/foaf/0.1/
...	...

Shapes File

The shapes file is a CSV file tht contains all the shapes declarations. It uses the prefixes defined at prefixes.csv file. The format of this file is as follows:

Shape Label	Constraint Property	Constraint	Min	Max
:User	schema:name	xsd:string	1	1
:User	schema:bithday	xsd:date	0	1
:User	schema:gender	[ schema:Male schema:Female ] OR xsd:string	1	1
:User	schema:owns	@:Car	0	-
:Car	schema:plateNumber	xsd:string	1	1
...	...	...	...	...

Generated File

For the previous input files Hermes will generate in te uotput directory a Shape Expression Compact Syntax file as follows:

PREFIX :       <http://example.org/>
PREFIX schema: <http://schema.org/>
PREFIX xsd:    <http://www.w3.org/2001/XMLSchema#>

:User {
  schema:name          xsd:string {1,1} ;
  schema:birthDate     xsd:date {0,1} ;
  schema:gender        [ schema:Male schema:Female ] OR xsd:string {1,1} ;
  schema:owns         @:Car {0,}
}

:Car {
  schema:plateNumber   xsd:string {1,1} ;
}

License

Hermes is primarily distributed under the terms of the MIT license.

See LICENSE for details.