org.apache.jena.query.ResultSet.next()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.apache.jena.query.ResultSet.next方法的一些代码示例，展示了ResultSet.next的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ResultSet.next方法的具体详情如下：
包路径：org.apache.jena.query.ResultSet
类名称：ResultSet
方法名：next

ResultSet.next介绍

[英]Move to the next binding (low level)
[中]移动到下一个绑定（低级别）

代码示例

代码示例来源：origin: com.github.galigator.openllet/openllet-jena

public SlicedResultSet(final ResultSet results, final long offset, final long limit)
{
  _results = results;
  _row = 0;
  _limit = limit;
  for (int i = 0; i < offset && results.hasNext(); i++)
    results.next();
}

代码示例来源：origin: Galigator/openllet

public SlicedResultSet(final ResultSet results, final long offset, final long limit)
{
  _results = results;
  _row = 0;
  _limit = limit;
  for (int i = 0; i < offset && results.hasNext(); i++)
    results.next();
}

代码示例来源：origin: Galigator/openllet

public SlicedResultSet(final ResultSet results, final long offset, final long limit)
{
  _results = results;
  _row = 0;
  _limit = limit;
  for (int i = 0; i < offset && results.hasNext(); i++)
    results.next();
}

代码示例来源：origin: org.aksw.jena-sparql-api/jena-sparql-api-cache

@Override
public Long call() throws Exception {
  for(; resultSet.hasNext() && (maxResultRow == null || currentRow < maxResultRow) && !Thread.interrupted(); ++currentRow) {
    resultSet.next();
    //ResultSet
    //ResultSetFactory.create
  }
  return currentRow;
}

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

@Override
public Long call() throws Exception {
  for(; resultSet.hasNext() && (maxResultRow == null || currentRow < maxResultRow) && !Thread.interrupted(); ++currentRow) {
    resultSet.next();
    //ResultSet
    //ResultSetFactory.create
  }
  return currentRow;
}

代码示例来源：origin: apache/jena

private static RDFNode getExactlyOne(ResultSet rs, String varname) {
  if ( ! rs.hasNext() )
    return null;
  QuerySolution qs = rs.next();
  if ( rs.hasNext() )
    return null;
  return qs.get(varname);
}

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

public static Multiset<QuerySolution> toMultisetQs(ResultSet rs) {
  Multiset<QuerySolution> result = HashMultiset.create();
  while(rs.hasNext()) {
    QuerySolution original = rs.next();
    QuerySolution wrapped = new QuerySolutionWithEquals(original);
    result.add(wrapped);
  }
  return result;
}

代码示例来源：origin: org.apache.jena/jena-fuseki-core

private static RDFNode getExactlyOne(ResultSet rs, String varname) {
  if ( ! rs.hasNext() )
    return null;
  QuerySolution qs = rs.next();
  if ( rs.hasNext() )
    return null;
  return qs.get(varname);
}

代码示例来源：origin: AtomGraph/Core

public static long hashResultSet(ResultSet result)
{
  long hash = 0;
  
  while (result.hasNext()) hash ^= hashQuerySolution(result.next());
  
  return hash;
}

代码示例来源：origin: org.openbase.bco/ontology.lib

private QuerySolution getQuerySolutionFromOntDB(final String queryExpression) throws IOException, NotAvailableException {
  final ResultSet resultSet = SparqlHttp.sparqlQuery(queryExpression, OntConfig.getOntologyDbUrl());
  if (resultSet == null || !resultSet.hasNext()) {
    throw new NotAvailableException("Could not get resultSet of query, because query result is invalid! Query wrong?");
  }
  return resultSet.next();
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public SortedSet<OWLClassExpression> getMeaningfulClasses(OWLClassExpression index, SortedSet<OWLClassExpression> targetClasses) {
  String query = buildMeaningfulClassesQuery(index, targetClasses);
  if (logger.isDebugEnabled()) logger.debug(sparql_debug, query);
  SortedSet<OWLClassExpression> meaningfulClasses = new TreeSet<>();
  ResultSet rs = executeSelectQuery(query);
  while(rs.hasNext()) {
    QuerySolution qs = rs.next();
    meaningfulClasses.add(df.getOWLClass(IRI.create(qs.getResource("concept").getURI())));
  }
  return meaningfulClasses;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public int getObjectCountForProperty(OWLObjectProperty p, long timeout, TimeUnit timeoutUnits){
  int cnt = -1;
  String query = String.format(
      "SELECT (COUNT(DISTINCT ?o) AS ?cnt) WHERE {?s <%s> ?o.}",
      p.toStringID());
  ResultSet rs = executeSelectQuery(query, timeout, timeoutUnits);
  if(rs.hasNext()){
    cnt = rs.next().getLiteral("cnt").getInt();
  }
  return cnt;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public int getObjectCountForProperty(OWLObjectProperty p){
  int cnt = -1;
  String query = String.format(
      "SELECT (COUNT(DISTINCT ?o) AS ?cnt) WHERE {?s <%s> ?o.}",
      p.toStringID());
  ResultSet rs = executeSelectQuery(query);
  if(rs.hasNext()){
    cnt = rs.next().getLiteral("cnt").getInt();
  }
  return cnt;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public int getSubjectCountForProperty(OWLProperty p){
  int cnt = -1;
  String query = String.format(
      "SELECT (COUNT(DISTINCT ?s) AS ?cnt) WHERE {?s <%s> ?o.}",
      p.toStringID());
  ResultSet rs = executeSelectQuery(query);
  if(rs.hasNext()){
    cnt = rs.next().getLiteral("cnt").getInt();
  }
  return cnt;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public int getSubjectCountForProperty(OWLProperty p, long timeout, TimeUnit timeoutUnits){
  int cnt = -1;
  String query = String.format(
      "SELECT (COUNT(DISTINCT ?s) AS ?cnt) WHERE {?s <%s> ?o.}",
      p.toStringID());
  ResultSet rs = executeSelectQuery(query, timeout, timeoutUnits);
  if(rs.hasNext()){
    cnt = rs.next().getLiteral("cnt").getInt();
  }
  return cnt;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public Set<OWLClass> getTypes(String namespace, boolean omitEmptyTypes) {
  Set<OWLClass> types = new TreeSet<>();
  String query =     "SELECT DISTINCT ?cls WHERE {[] a ?cls ." +
  (omitEmptyTypes ? "[] a ?cls ." : "" ) +
  (namespace != null ? ("FILTER(REGEX(?cls,'^" + namespace + "'))") : "") + "}";
  ResultSet rs = executeSelectQuery(query);
  while(rs.hasNext()){
    QuerySolution qs = rs.next();
    types.add(df.getOWLClass(IRI.create(qs.getResource("cls").getURI())));
  }
  return types;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public SortedSet<OWLClass> getMostSpecificClasses() {
  SortedSet<OWLClass> classes = new TreeSet<>();
  String query = "SELECT ?cls WHERE {?cls a <http://www.w3.org/2002/07/owl#Class>. "
      + "FILTER NOT EXISTS{?sub <http://www.w3.org/2000/01/rdf-schema#subClassOf> ?cls. FILTER(?sub != <http://www.w3.org/2002/07/owl#Nothing>)}}";
  ResultSet rs = executeSelectQuery(query);
  QuerySolution qs;
  while(rs.hasNext()){
    qs = rs.next();
    classes.add(df.getOWLClass(IRI.create(qs.getResource("cls").getURI())));
  }
  return classes;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

public SortedSet<OWLObjectProperty> getInverseObjectProperties(OWLObjectProperty property){
  SortedSet<OWLObjectProperty> inverseObjectProperties = new TreeSet<>();
  String query = "SELECT ?p WHERE {" +
      "{<%p> <%ax> ?p.} UNION {?p <%ax> <%p>}}".replace("%p", property.toStringID()).replace("%ax", OWL.inverseOf.getURI());
  ResultSet rs = executeSelectQuery(query);
  QuerySolution qs;
  while(rs.hasNext()){
    qs = rs.next();
    inverseObjectProperties.add(df.getOWLObjectProperty(IRI.create(qs.getResource("p").getURI())));
  }
  return inverseObjectProperties;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

private SortedSet<String> getAllResources(String query){
  SortedSet<String> resources = new TreeSet<>();
  query = query + " LIMIT 1000";
  
  QueryExecution qe = qef.createQueryExecution(query);
  ResultSet rs = qe.execSelect();
  
  QuerySolution qs;
  while(rs.hasNext()){
    qs = rs.next();
    resources.add(qs.getResource("x0").getURI());
  }
  qe.close();
  return resources;
}

代码示例来源：origin: SmartDataAnalytics/DL-Learner

@Override
public Map<OWLIndividual, SortedSet<OWLLiteral>> getDatatypeMembersImpl(OWLDataProperty dataProperty) {
  Map<OWLIndividual, SortedSet<OWLLiteral>> subject2objects = new HashMap<>();
  
  String query = String.format(SPARQLQueryUtils.SELECT_PROPERTY_RELATIONSHIPS_QUERY, dataProperty.toStringID());
  ResultSet rs = executeSelectQuery(query);
  while(rs.hasNext()){
    QuerySolution qs = rs.next();
    OWLIndividual sub = df.getOWLNamedIndividual(IRI.create(qs.getResource("var1").getURI()));
    OWLLiteral obj = OwlApiJenaUtils.getOWLLiteral(qs.getLiteral("var2"));
    subject2objects.computeIfAbsent(sub, k -> new TreeSet<>()).add(obj);
  }
  return subject2objects;
}

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