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 Function<String,String>	fixupPrefixes Function applied to undefined prefixes to convert to a URI string
static 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 Node	blankNodeToIri(Node node) "Skolemize" to a node.
static String	blankNodeToIriString(Node node) "Skolemize" to a string.
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 java.io.Writer (better to use an IndentedWriter over an OutputStream)
static Node	createIRIorBNode(String str) Implement <_:....> as a "Node IRI" that is, use the given label as the BNode internal label.
static ParserProfile	createParserProfile(ErrorHandler errorHandler) Create a ParserProfile with default settings, and a specific error handler.
static ParserProfile	createParserProfile(FactoryRDF factory, ErrorHandler errorHandler, boolean checking) Create a ParserProfile with default settings, and a specific error handler.
static ParserProfile	createParserProfile(FactoryRDF factory, ErrorHandler errorHandler, IRIResolver resolver, boolean checking) Create a ParserProfile.
static DatasetGraph	dataset(Graph graph) Deprecated. Use DatasetGraphFactory.wrap(Graph)
static ParserProfile	dftProfile() Create a ParserProfile with default settings.
static FactoryRDF	factoryRDF() Create a new (not influenced by anything else) FactoryRDF using the default label to blank node scheme.
static FactoryRDF	factoryRDF(LabelToNode labelMapping) Create a new (not influenced 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 prefix is not 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) Deprecated. To be removed.
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, boolean newStyle)
static void	writePrefixes(org.apache.jena.atlas.io.IndentedWriter out, PrefixMap prefixMap, boolean newStyle) Write prefixes, using PREFIX
static void	writePrefixesOldStyle(org.apache.jena.atlas.io.IndentedWriter out, PrefixMap prefixMap) Write prefixes, using @prefix

Methods inherited from class java.lang.Object

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

Field Detail

fixupPrefixes

public static final Function<String,String> fixupPrefixes

Function applied to undefined prefixes to convert to a URI string

testFixupedPrefixURI

public static final Predicate<String> testFixupedPrefixURI

Function to test for undefined prefix URIs

Constructor Detail

RiotLib

public RiotLib()

Method Detail

blankNodeToIri

public static Node blankNodeToIri(Node node)

"Skolemize" to a node. Returns a Node_URI.

blankNodeToIriString

public static String blankNodeToIriString(Node node)

"Skolemize" to a string.

createIRIorBNode

public static Node createIRIorBNode(String str)

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

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 prefix is not 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

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

Deprecated. To be removed.

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 (not influenced 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 default label to blank node scheme.

dftProfile

public static ParserProfile dftProfile()

Create a ParserProfile with default settings.

createParserProfile

public static ParserProfile createParserProfile(ErrorHandler errorHandler)

Create a ParserProfile with default settings, and a specific error handler.

createParserProfile

public static ParserProfile createParserProfile(FactoryRDF factory,
                                                ErrorHandler errorHandler,
                                                boolean checking)

Create a ParserProfile with default settings, and a specific error handler.

createParserProfile

public static ParserProfile createParserProfile(FactoryRDF factory,
                                                ErrorHandler errorHandler,
                                                IRIResolver resolver,
                                                boolean checking)

Create a ParserProfile.

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,
                             boolean newStyle)

writePrefixes

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

Write prefixes, using PREFIX

writePrefixesOldStyle

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

Write prefixes, using @prefix

dataset

@Deprecated
public static DatasetGraph dataset(Graph graph)

Deprecated. Use DatasetGraphFactory.wrap(Graph)

Returns dataset that wraps a graph

Parameters:

graph -

Returns:

DatasetGraph

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

prefixMap

public static PrefixMap prefixMap(Graph graph)

adapter

public static WriterGraphRIOTBase adapter(WriterDatasetRIOT writer)