org.apache.jena.riot.system

Class RiotLib

java.lang.Object

org.apache.jena.riot.system.RiotLib

public class RiotLib
extends Object

Misc RIOT code

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.function.Function<String,String>	fixupPrefixes Function applied to undefined prefixes to convert to a URI string
static java.util.function.Predicate<String>	testFixupedPrefixURI Function to test for undefined prefix URIs

Constructor Summary

Constructors

Constructor and Description
RiotLib()

Method Summary

Modifier and Type	Method and Description
static void	accTriples(Collection<Triple> acc, Graph graph, Node s, Node p, Node o) Collect all the matching triples
static WriterGraphRIOTBase	adapter(WriterDatasetRIOT writer)
static int	calcWidth(PrefixMap prefixMap, String baseURI, Collection<Node> nodes, int minWidth, int maxWidth)
static int	calcWidth(PrefixMap prefixMap, String baseURI, Node p)
static int	calcWidthTriples(PrefixMap prefixMap, String baseURI, Collection<Triple> triples, int minWidth, int maxWidth)
static long	countTriples(DatasetGraph dsg, Node s, Node p, Node o)
static long	countTriples(Graph graph, Node s, Node p, Node o)
static org.apache.jena.atlas.io.IndentedWriter	create(Writer writer) IndentedWriter over a jaav.io.Writer (better to use an IndentedWriter over an OutputStream)
static Node	createIRIorBNode(String iri) Implement <_:....> as a "Node IRI" that is, use the given label as the BNode internal label.
static DatasetGraph	dataset(Graph graph) Returns dataset that wraps a graph
static FactoryRDF	factoryRDF() Create a new (not influenced by anything else) FactoryRDF using the label to blank node scheme scope by this FactoryRDF.
static FactoryRDF	factoryRDF(LabelToNode labelMapping) Create a new (notinfluenced by anything else) FactoryRDF using the label to blank node scheme provided.
static String	fixupPrefixIRI(String prefixedName) Convert an prefix name (qname) to an IRI, for when the prerix is nor defined.
static String	fixupPrefixIRI(String prefix, String localPart) Convert an prefix name (qname) to an IRI, for when the prerix is nor defined.
static boolean	isBNodeIRI(String iri) Test whether a IRI is a ARQ-encoded blank node.
static boolean	isPrefixIRI(String iri) Test whether a IRI is a ARQ-encoded blank node.
static Node	parse(String string) Parse a string to get one Node (the first token in the string)
static PrefixMap	prefixMap(DatasetGraph dsg)
static PrefixMap	prefixMap(Graph graph)
static ParserProfile	profile(Lang lang, String baseIRI)
static ParserProfile	profile(Lang lang, String baseIRI, ErrorHandler handler)
static ParserProfile	profile(String baseIRI, boolean resolveIRIs, boolean checking, ErrorHandler handler) Create a parser profile for the given setup
static boolean	strSafeFor(String str, char ch)
static Triple	triple1(DatasetGraph dsg, Node s, Node p, Node o) Get exactly one triple, or null for none or more than one.
static Triple	triple1(Graph graph, Node s, Node p, Node o) Get exactly one triple or null for none or more than one.
static List<Triple>	triples(Graph graph, Node s, Node p, Node o) Get all the triples for the graph.find
static Collection<Triple>	triplesOfSubject(Graph graph, Node subj) Get triples with the same subject
static void	writeBase(org.apache.jena.atlas.io.IndentedWriter out, String base)
static void	writePrefixes(org.apache.jena.atlas.io.IndentedWriter out, PrefixMap prefixMap)

Methods inherited from class java.lang.Object

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

Field Detail

fixupPrefixes

public static final java.util.function.Function<String,String> fixupPrefixes

Function applied to undefined prefixes to convert to a URI string

testFixupedPrefixURI

public static final java.util.function.Predicate<String> testFixupedPrefixURI

Function to test for undefined prefix URIs

Constructor Detail

RiotLib

public RiotLib()

Method Detail

createIRIorBNode

public static Node createIRIorBNode(String iri)

Implement <_:....> as a "Node IRI" that is, use the given label as the BNode internal label. Use with care.

isBNodeIRI

public static boolean isBNodeIRI(String iri)

Test whether a IRI is a ARQ-encoded blank node.

isPrefixIRI

public static boolean isPrefixIRI(String iri)

Test whether a IRI is a ARQ-encoded blank node.

fixupPrefixIRI

public static String fixupPrefixIRI(String prefix,
                                    String localPart)

Convert an prefix name (qname) to an IRI, for when the prerix is nor defined.

See Also:

ARQ.fixupUndefinedPrefixes

fixupPrefixIRI

public static String fixupPrefixIRI(String prefixedName)

Convert an prefix name (qname) to an IRI, for when the prerix is nor defined.

See Also:

ARQ.fixupUndefinedPrefixes

parse

public static Node parse(String string)

Parse a string to get one Node (the first token in the string)

profile

public static ParserProfile profile(Lang lang,
                                    String baseIRI)

profile

public static ParserProfile profile(Lang lang,
                                    String baseIRI,
                                    ErrorHandler handler)

profile

public static ParserProfile profile(String baseIRI,
                                    boolean resolveIRIs,
                                    boolean checking,
                                    ErrorHandler handler)

Create a parser profile for the given setup

Parameters:

baseIRI - Base IRI

resolveIRIs - Whether to resolve IRIs

checking - Whether to check

handler - Error handler

Returns:

ParserProfile

See Also:

for per-language setup

factoryRDF

public static FactoryRDF factoryRDF(LabelToNode labelMapping)

Create a new (notinfluenced by anything else) FactoryRDF using the label to blank node scheme provided.

factoryRDF

public static FactoryRDF factoryRDF()

Create a new (not influenced by anything else) FactoryRDF using the label to blank node scheme scope by this FactoryRDF.

triplesOfSubject

public static Collection<Triple> triplesOfSubject(Graph graph,
                                                  Node subj)

Get triples with the same subject

triples

public static List<Triple> triples(Graph graph,
                                   Node s,
                                   Node p,
                                   Node o)

Get all the triples for the graph.find

countTriples

public static long countTriples(Graph graph,
                                Node s,
                                Node p,
                                Node o)

countTriples

public static long countTriples(DatasetGraph dsg,
                                Node s,
                                Node p,
                                Node o)

accTriples

public static void accTriples(Collection<Triple> acc,
                              Graph graph,
                              Node s,
                              Node p,
                              Node o)

Collect all the matching triples

triple1

public static Triple triple1(Graph graph,
                             Node s,
                             Node p,
                             Node o)

Get exactly one triple or null for none or more than one.

triple1

public static Triple triple1(DatasetGraph dsg,
                             Node s,
                             Node p,
                             Node o)

Get exactly one triple, or null for none or more than one.

strSafeFor

public static boolean strSafeFor(String str,
                                 char ch)

writeBase

public static void writeBase(org.apache.jena.atlas.io.IndentedWriter out,
                             String base)

writePrefixes

public static void writePrefixes(org.apache.jena.atlas.io.IndentedWriter out,
                                 PrefixMap prefixMap)

dataset

public static DatasetGraph dataset(Graph graph)

Returns dataset that wraps a graph

prefixMap

public static PrefixMap prefixMap(DatasetGraph dsg)

calcWidth

public static int calcWidth(PrefixMap prefixMap,
                            String baseURI,
                            Node p)

calcWidth

public static int calcWidth(PrefixMap prefixMap,
                            String baseURI,
                            Collection<Node> nodes,
                            int minWidth,
                            int maxWidth)

calcWidthTriples

public static int calcWidthTriples(PrefixMap prefixMap,
                                   String baseURI,
                                   Collection<Triple> triples,
                                   int minWidth,
                                   int maxWidth)

create

public static org.apache.jena.atlas.io.IndentedWriter create(Writer writer)

IndentedWriter over a jaav.io.Writer (better to use an IndentedWriter over an OutputStream)

prefixMap

public static PrefixMap prefixMap(Graph graph)

adapter

public static WriterGraphRIOTBase adapter(WriterDatasetRIOT writer)