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This library provides an easy way of filtering a list of simplified n-triples.
version 1.0.0
license BSD3
native-modules False
elm-version 0.18.0 <= v < 0.19.0
Tag 1.0.0
Committed At 2017-08-05 16:32:12 UTC
elm-lang/core 5.1.1 <= v < 6.0.0 5.1.1

README

Filtering of n-triples

Build Status

This library provides an easy way of filtering a list of simplified n-triples. A simplified n-triple with a subject, a predicate and an object. It is simplified because it does not discriminate between URI, blank node, language or datatype. More about RDF n-triples

Getting Started

Installing Elm packages

There is no dependency.

elm-app package install <package-name>

Create a n-triple

Create a simplified n-triple with a subject, a predicate and an object.

createTriple "http://example.org/show/218" "http://www.w3.org/2000/01/rdf-schema#label" "That Seventies Show"

Please note that intentionally this library has a very casual approach to the specs, and any string will be accepted.

Filter a list of n-triples

Filter a list of n-triples based on a filter expression.

-- Select only the triples which have a given subject
filter (WithSubject (Equals "http://example.org/show/218")) listOfTriples

-- Select only the triples which have a label and which starts with "That"
filter (And (WithPredicate (Equals "http://www.w3.org/2000/01/rdf-schema#label"))(WithObject (StartsWith "That")) ) listOfTriples

Filter expression

| Type | Description | |---------------|-------------------------------------------------------------------------------------------------------------------------| | WithSubject | Specify a criteria for the subject field. | | WithPredicate | Specify a criteria for the predicate field. | | WithObject | Specify a criteria for the object field. | | Not | Inverts the effect of a filter expression and returns a list of triples that does not match it. | | And | Joins filter expressions clauses with a logical AND returns all the triples that match the conditions of both clauses. | | Or | Joins filter expressions clauses with a logical OR returns all the triples that match the conditions of either clauses. |

Field comparator

| Type | Description | |--------------------|-----------------------------------------------------------------------------| | IsEmpty | Determine if the field is empty. | | Equals | Determine if the field is equal to the given value. | | StartsWith | Determine if the field starts with the given value. | | EndsWith | Determine if the field ends with the given value. | | Contains | Determine if the field contains the given value. | | Regx | Determine if the field satisfies the given regular expression. | | IsTrue | Determine if the field is true (contains the string "true"). | | IsFalse | Determine if the field is true (contains the string "false"). | | EqualsAny | Determine if the field is equal any of the given values. | | GreaterThan | Determine if the field is greater than the given float value. | | GreaterThanOrEqual | Determine if the field is greater or equal to the given float value. | | LessThan | Determine if the field is less than the given float value. | | LessThanOrEqual | Determine if the field is less or equal to the given float value. | | Custom | Determine if the field satisfies a custom function against the given value. |

Contributing

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.

Versioning

Managed automatically by Elm version rules.

Authors

  • Olivier Huin - Initial work - olih

See also the list of contributors who participated in this project.

License

This project is licensed under the BSD 3-Clause License - see the LICENSE.md file for details