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Informations about the package quick-rdf-io-raptor
Raptor Parser (RDF)
It provides a RDF parser using rapper command line tool from Raptor RDF parsing and serializing utility.
The generated internal PHP-representations (quads, ...) are compatible to https://github.com/sweetrdf/rdfInterface and can be used together with other rdfInterface implementations, such as quickRdfIo to serialize RDF in another format, for instance.
Installation
Requirements
- PHP 8.0+
- Raptor RDF parser utility is installed (we need its
rappercommand line tool); its usually not part of the default installation- on Debian/Ubuntu: run
apt-get install raptor2-utils - Package might be namend differently in other Linux distributions
- on Debian/Ubuntu: run
Composer
Install it using Composer: composer require sweetrdf/quick-rdf-io-raptor.
You need an implementation of rdfInterfaces, such as quickRdf.
For starters, just use composer require sweetrdf/quick-rdf
Usage
Note: We are using rdfInterface implementations from https://github.com/sweetrdf/quickRdf in the following. Make sure you installed the package before running the code.
Parsing
Parse a file:
Parse a string:
Caveats and known issues
When using this class keep the following in mind:
- The
Parserclass is basically a wrapper around therappercommand, which means input must be prepared for further processing (may impact performance). A readable local file as source is needed as well as a local file for generated N-Quads output, which is used for the internal NQuads parser later on.
License
MIT
