eu.fbk.rdfpro.util

Class Algebra

java.lang.Object

eu.fbk.rdfpro.util.Algebra

public final class Algebra
extends Object

Constructor Summary

Constructors

Constructor and Description
Algebra()

Method Summary

Modifier and Type	Method and Description
static Iterator<org.openrdf.query.BindingSet>	evaluateTupleExpr(org.openrdf.query.algebra.TupleExpr expr, org.openrdf.query.Dataset dataset, org.openrdf.query.BindingSet bindings, org.openrdf.query.algebra.evaluation.EvaluationStrategy evaluationStrategy, org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics evaluationStatistics, Function<org.openrdf.model.Value,org.openrdf.model.Value> valueNormalizer)
static org.openrdf.model.Value	evaluateValueExpr(org.openrdf.query.algebra.ValueExpr expr, org.openrdf.query.BindingSet bindings)
static org.openrdf.query.algebra.TupleExpr	explodeFilters(org.openrdf.query.algebra.TupleExpr expr)
static <T> List<T>	extractNodes(org.openrdf.query.algebra.QueryModelNode expr, Class<T> clazz, Predicate<? super T> matchPredicate, Predicate<org.openrdf.query.algebra.QueryModelNode> recursePredicate)
static Set<String>	extractVariables(org.openrdf.query.algebra.QueryModelNode expr, boolean onlyOutputVars)
static String	format(org.openrdf.query.algebra.TupleExpr expr)
static org.openrdf.query.algebra.evaluation.TripleSource	getEmptyTripleSource()
static org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics	getEvaluationStatistics(ToDoubleFunction<org.openrdf.query.algebra.StatementPattern> estimator)
static org.openrdf.query.algebra.evaluation.EvaluationStrategy	getEvaluationStrategy(org.openrdf.query.algebra.evaluation.TripleSource tripleSource, org.openrdf.query.Dataset dataset)
static org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolver	getFederatedServiceResolver()
static void	internStrings(org.openrdf.query.algebra.QueryModelNode expr)
static boolean	isBGP(org.openrdf.query.algebra.TupleExpr expr)
static <T extends org.openrdf.query.algebra.QueryModelNode> T	normalize(T expr, Function<org.openrdf.model.Value,org.openrdf.model.Value> normalizer)
static org.openrdf.query.algebra.TupleExpr	normalizeVars(org.openrdf.query.algebra.TupleExpr expr)
static org.openrdf.query.parser.ParsedQuery	parseQuery(String string, String baseURI, Map<String,String> namespaces)
static org.openrdf.query.algebra.TupleExpr	parseTupleExpr(String string, String baseURI, Map<String,String> namespaces)
static org.openrdf.query.algebra.ValueExpr	parseValueExpr(String string, String baseURI, Map<String,String> namespaces)
static org.openrdf.query.algebra.TupleExpr	pushExtensions(org.openrdf.query.algebra.TupleExpr expr)
static org.openrdf.query.algebra.TupleExpr	pushFilters(org.openrdf.query.algebra.TupleExpr expr)
static String	renderExpr(org.openrdf.query.algebra.TupleExpr expr, Map<String,String> prefixes)
static String	renderQuery(org.openrdf.query.algebra.TupleExpr expr, org.openrdf.query.Dataset dataset, Map<String,String> prefixes, boolean forceSelect)
static org.openrdf.query.algebra.QueryModelNode	replaceNode(org.openrdf.query.algebra.QueryModelNode root, org.openrdf.query.algebra.QueryModelNode current, org.openrdf.query.algebra.QueryModelNode replacement)
static <T extends org.openrdf.query.algebra.QueryModelNode> T	rewrite(T node, org.openrdf.query.BindingSet bindings)
static <T extends org.openrdf.query.algebra.QueryModelNode> T	rewrite(T node, Map<String,org.openrdf.query.algebra.Var> substitutions)
static org.openrdf.query.algebra.TupleExpr	rewriteGraph(org.openrdf.query.algebra.TupleExpr expr, org.openrdf.query.algebra.Var graphVar)
static org.openrdf.query.algebra.TupleExpr[]	splitTupleExpr(org.openrdf.query.algebra.TupleExpr expr, Predicate<org.openrdf.query.algebra.StatementPattern> predicate, int partition)
static org.openrdf.query.algebra.TupleExpr[]	splitTupleExpr(org.openrdf.query.algebra.TupleExpr expr, Set<org.openrdf.model.URI> vocabulary, int partition)

Methods inherited from class java.lang.Object

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

Constructor Detail

Algebra

public Algebra()

Method Detail

getFederatedServiceResolver

public static org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolver getFederatedServiceResolver()

getEmptyTripleSource

public static org.openrdf.query.algebra.evaluation.TripleSource getEmptyTripleSource()

getEvaluationStrategy

public static org.openrdf.query.algebra.evaluation.EvaluationStrategy getEvaluationStrategy(@Nullable
                                                                                            org.openrdf.query.algebra.evaluation.TripleSource tripleSource,
                                                                                            @Nullable
                                                                                            org.openrdf.query.Dataset dataset)

getEvaluationStatistics

public static org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics getEvaluationStatistics(@Nullable
                                                                                                     ToDoubleFunction<org.openrdf.query.algebra.StatementPattern> estimator)

parseTupleExpr

public static org.openrdf.query.algebra.TupleExpr parseTupleExpr(String string,
                                                                 @Nullable
                                                                 String baseURI,
                                                                 @Nullable
                                                                 Map<String,String> namespaces)
                                                          throws org.openrdf.query.MalformedQueryException

Throws:

org.openrdf.query.MalformedQueryException

parseValueExpr

public static org.openrdf.query.algebra.ValueExpr parseValueExpr(String string,
                                                                 @Nullable
                                                                 String baseURI,
                                                                 @Nullable
                                                                 Map<String,String> namespaces)
                                                          throws org.openrdf.query.MalformedQueryException

Throws:

org.openrdf.query.MalformedQueryException

parseQuery

public static org.openrdf.query.parser.ParsedQuery parseQuery(String string,
                                                              @Nullable
                                                              String baseURI,
                                                              @Nullable
                                                              Map<String,String> namespaces)
                                                       throws org.openrdf.query.MalformedQueryException

Throws:

org.openrdf.query.MalformedQueryException

evaluateValueExpr

public static org.openrdf.model.Value evaluateValueExpr(org.openrdf.query.algebra.ValueExpr expr,
                                                        org.openrdf.query.BindingSet bindings)

normalize

@Nullable
public static <T extends org.openrdf.query.algebra.QueryModelNode> T normalize(@Nullable
                                                                                         T expr,
                                                                                         Function<org.openrdf.model.Value,org.openrdf.model.Value> normalizer)

evaluateTupleExpr

public static Iterator<org.openrdf.query.BindingSet> evaluateTupleExpr(org.openrdf.query.algebra.TupleExpr expr,
                                                                       @Nullable
                                                                       org.openrdf.query.Dataset dataset,
                                                                       @Nullable
                                                                       org.openrdf.query.BindingSet bindings,
                                                                       @Nullable
                                                                       org.openrdf.query.algebra.evaluation.EvaluationStrategy evaluationStrategy,
                                                                       @Nullable
                                                                       org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics evaluationStatistics,
                                                                       @Nullable
                                                                       Function<org.openrdf.model.Value,org.openrdf.model.Value> valueNormalizer)

isBGP

public static boolean isBGP(org.openrdf.query.algebra.TupleExpr expr)

extractNodes

public static <T> List<T> extractNodes(@Nullable
                                       org.openrdf.query.algebra.QueryModelNode expr,
                                       Class<T> clazz,
                                       @Nullable
                                       Predicate<? super T> matchPredicate,
                                       @Nullable
                                       Predicate<org.openrdf.query.algebra.QueryModelNode> recursePredicate)

extractVariables

public static Set<String> extractVariables(@Nullable
                                           org.openrdf.query.algebra.QueryModelNode expr,
                                           boolean onlyOutputVars)

internStrings

public static void internStrings(@Nullable
                                 org.openrdf.query.algebra.QueryModelNode expr)

rewrite

@Nullable
public static <T extends org.openrdf.query.algebra.QueryModelNode> T rewrite(@Nullable
                                                                                       T node,
                                                                                       @Nullable
                                                                                       Map<String,org.openrdf.query.algebra.Var> substitutions)

rewrite

@Nullable
public static <T extends org.openrdf.query.algebra.QueryModelNode> T rewrite(@Nullable
                                                                                       T node,
                                                                                       @Nullable
                                                                                       org.openrdf.query.BindingSet bindings)

normalizeVars

@Nullable
public static org.openrdf.query.algebra.TupleExpr normalizeVars(@Nullable
                                                                          org.openrdf.query.algebra.TupleExpr expr)

rewriteGraph

public static org.openrdf.query.algebra.TupleExpr rewriteGraph(org.openrdf.query.algebra.TupleExpr expr,
                                                               org.openrdf.query.algebra.Var graphVar)

replaceNode

public static org.openrdf.query.algebra.QueryModelNode replaceNode(org.openrdf.query.algebra.QueryModelNode root,
                                                                   org.openrdf.query.algebra.QueryModelNode current,
                                                                   org.openrdf.query.algebra.QueryModelNode replacement)

explodeFilters

@Nullable
public static org.openrdf.query.algebra.TupleExpr explodeFilters(@Nullable
                                                                           org.openrdf.query.algebra.TupleExpr expr)

pushFilters

@Nullable
public static org.openrdf.query.algebra.TupleExpr pushFilters(@Nullable
                                                                        org.openrdf.query.algebra.TupleExpr expr)

pushExtensions

@Nullable
public static org.openrdf.query.algebra.TupleExpr pushExtensions(@Nullable
                                                                           org.openrdf.query.algebra.TupleExpr expr)

splitTupleExpr

public static org.openrdf.query.algebra.TupleExpr[] splitTupleExpr(org.openrdf.query.algebra.TupleExpr expr,
                                                                   Set<org.openrdf.model.URI> vocabulary,
                                                                   int partition)

splitTupleExpr

public static org.openrdf.query.algebra.TupleExpr[] splitTupleExpr(@Nullable
                                                                   org.openrdf.query.algebra.TupleExpr expr,
                                                                   Predicate<org.openrdf.query.algebra.StatementPattern> predicate,
                                                                   int partition)

renderQuery

public static String renderQuery(org.openrdf.query.algebra.TupleExpr expr,
                                 @Nullable
                                 org.openrdf.query.Dataset dataset,
                                 @Nullable
                                 Map<String,String> prefixes,
                                 boolean forceSelect)

renderExpr

public static String renderExpr(org.openrdf.query.algebra.TupleExpr expr,
                                @Nullable
                                Map<String,String> prefixes)

format

public static String format(org.openrdf.query.algebra.TupleExpr expr)