org.provarules.reference2.builtins

Class ProvaSparqlAskImpl

java.lang.Object

org.provarules.reference2.builtins.ProvaBuiltinImpl

org.provarules.reference2.builtins.ProvaSparqlQueryImpl

org.provarules.reference2.builtins.ProvaSparqlAskImpl

All Implemented Interfaces:

ProvaBuiltin, ProvaPredicate

public class ProvaSparqlAskImpl
extends ProvaSparqlQueryImpl

sparql_ask built-in.

Usage: sparql_ask(Connection, QueryStr, QueryID) sparql_ask executes a SPARQL ask query on the given repository connection. After successful execution, it creates a fact in the knowledge base using the sparql_results predicate and QueryID as the first term. QueryID can be either a constant term or a variable, in the latter case it is assigned a random identifier number.

Example: sparql_connect(Connection, "http://dbpedia.org/sparql"), sparql_ask(Connection, "ASK WHERE { <...> <...> <...> . }", QueryID), sparql_results(QueryID).

Author:

Malte Rohde

Field Summary

Fields inherited from class org.provarules.reference2.builtins.ProvaBuiltinImpl

kb

Constructor Summary

Constructors

Constructor and Description
ProvaSparqlAskImpl(ProvaKnowledgeBase kb)

Method Summary

Modifier and Type	Method and Description
protected boolean	processQuery(ProvaPredicate pred, ProvaConstant cqid, org.eclipse.rdf4j.repository.RepositoryConnection con, java.lang.String sparql_query)

Methods inherited from class org.provarules.reference2.builtins.ProvaSparqlQueryImpl

getArity, process

Methods inherited from class org.provarules.reference2.builtins.ProvaBuiltinImpl

addClause, addClauseA, equals, getClauseSet, getKnowledgeBase, getSymbol, process_, setKnowledgeBase

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ProvaSparqlAskImpl

public ProvaSparqlAskImpl(ProvaKnowledgeBase kb)

Method Detail

processQuery

protected boolean processQuery(ProvaPredicate pred,
                               ProvaConstant cqid,
                               org.eclipse.rdf4j.repository.RepositoryConnection con,
                               java.lang.String sparql_query)

Specified by:

processQuery in class ProvaSparqlQueryImpl