Python - conexão Allegro e executar queries SPARQL e outros comandos da API no jupyter notebook

 

Instalação -> https://franz.com/agraph/support/documentation/current/python/install.html

pip install agraph-python

Guia de Referência da API -> https://franz.com/agraph/support/documentation/current/python/api.html

Tutorial -> https://franz.com/agraph/support/documentation/current/python/tutorial.html

No notebook jupyter  tem exemplos dos comandos para abrir conexão, preparar comandos, executar comandos, setar variável de ambiente, etc ...

addStatement     Add the supplied statement to the specified contexts in the repository.
addTriple            Add a single triple to the repository.
getStatements     Get all statements with a specific subject, predicate and/or object from the repository.

prepareBooleanQuery      Parse query into a boolean query object which can be executed against the triple store.
prepareGraphQuery        Parse query into a graph query object which can be executed against the triple store.
prepareTupleQuery         Parse query into a tuple query object which can be executed against the triple stroe.
prepareUpdate                 Parse query into an update query object which can be executed against the triple store.

executeBooleanQuery       Prepare and immediately evaluate a query that returns a boolean.
executeGraphQuery         Prepare and immediately evaluate a query that returns RDF.
executeTupleQuery           Prepare and immediately evaluate a query that returns tuples.
executeUpdate                   Prepare and immediately evaluate a SPARQL update query. 

evalFreeTextSearch          Return a list of statements for the given free-text pattern search.

To insert the data we have to iterate over the result and add each triple using addStatement() (or use an INSERT query).

SELECT: This kind of query returns a sequence of tuples, binding variables to matching elements of a search pattern. SELECT queries are created using prepareTupleQuery() and return results of type TupleQueryResult.

The ASK query returns a Boolean, depending on whether the triple pattern matched any triples. Queries of this type are created using prepareBooleanQuery().

The CONSTRUCT query creates triples by substantiating provided templates with values resulting from matching a pattern. Queries of this kind are created using prepareGraphQuery() and return a RepositoryResult - which is an iterator over the constructed triples.

The DESCRIBE query returns triples that ‘describe’ a given set of resources. Such queries are created using prepareGraphQuery() and return RepositoryResult objects.

Reasoner

conn.getStatements(s, p, o, includeInferred=True)

RDFS++ (rdfs e owl)
owl:inverseOf, subPropertyOf, inverseOf with subPropertyOf, sameAs, sameAs with inverseOf and subPropertyOf, type with subClassOf, type with range, type with domain, Transitivity with sameAs