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Overview

Constructors

• SimpleGraph

Methods

• add_graph - Add the triples in the supplied graph to the current graph
• add_json - Add the triples parsed from the supplied JSON to the graph
• add_labelling_property
• add_literal_triple - Adds a triple with a literal object to the graph
• add_rdf - Add the triples parsed from the supplied RDF to the graph - let ARC guess the input
• add_rdfxml - Add the triples parsed from the supplied RDF/XML to the graph
• add_resource_triple - Adds a triple with a resource object to the graph
• add_turtle - Add the triples parsed from the supplied Turtle to the graph
• diff - diff returns a simpleIndex consisting of all the statements in array1 that weren't found in any of the subsequent arrays
• from_json - Replace the triples in the graph with those parsed from the supplied JSON
• from_rdfxml - Replace the triples in the graph with those parsed from the supplied RDF/XML
• from_turtle - Replace the triples in the graph with those parsed from the supplied Turtle
• get_description
• get_first_literal - Fetch the first literal value for a given subject and predicate.
• get_first_resource - Fetch the first resource value for a given subject and predicate.
• get_index - Get a copy of the graph's triple index
• get_label
• get_literal_triple_values - Fetch the literal values for a given subject and predicate.
• get_prefix
• get_resource_triple_values - Fetch the resource values for a given subject and predicate.
• get_subject_properties - Fetch the properties of a given subject and predicate.
• get_subject_property_values - Fetch the values for a given subject and predicate.
• get_subject_subgraph - Fetch a subgraph where all triples have given subject
• get_subjects - Fetch an array of all the subjects
• get_subjects_of_type - Fetch an array of all the subject that have and rdf type that matches that given
• get_subjects_where_literal - Fetch an array of all the subjects where the predicate and object match a ?s $p $o triple in the graph and the object is a literal value
• get_subjects_where_resource - Fetch an array of all the subjects where the predicate and object match a ?s $p $o triple in the graph and the object is a resource
• get_triples -
• has_literal_triple - Tests whether the graph contains the given triple
• has_resource_triple - Tests whether the graph contains the given triple
• has_triples_about - Tests whether the graph contains a triple with the given subject
• is_empty - Tests whether the graph contains any triples
• make_resource_array - Constructs an array containing the type of the resource and its value
• merge - merge merges all rdf/json-style arrays passed as parameters
• qname_to_uri - Convert a QName to a URI using registered namespace prefixes
• reify
• remove_all_triples - Clears all triples out of the graph
• remove_literal_triple
• remove_property_values - Removes all triples with the given subject and predicate
• remove_resource_triple - Remove a triple with a resource object from the graph
• remove_triples_about - Remove all triples having the supplied subject
• replace_resource
• set_namespace_mapping - Map a portion of a URI to a short prefix for use when serialising the graph
• subject_has_property - Tests whether the graph contains a triple with the given subject and predicate
• to_html - Serialise the graph to HTML
• to_json - Serialise the graph to JSON
• to_ntriples - Serialise the graph to N-Triples
• to_rdfxml - Serialise the graph to RDF/XML
• to_turtle - Serialise the graph to Turtle
• update_prefix_mappings
• uri_to_qname - Convert a URI to a QName using registered namespace prefixes

Fields

Constructor Detail

SimpleGraph

public SimpleGraph(mixed graph)

Method Detail

add_graph

public void add_graph(mixed g)

Add the triples in the supplied graph to the current graph

Param:

SimpleGraph g the graph to read

add_json

public void add_json(mixed json)

Add the triples parsed from the supplied JSON to the graph

See:

http://n2.talis.com/wiki/RDF_JSON_Specification

Param:

string json the JSON to parse

add_labelling_property

public void add_labelling_property(mixed p)

add_literal_triple

public void add_literal_triple(mixed s, mixed p, mixed o, mixed lang, mixed dt)

Adds a triple with a literal object to the graph

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate of the triple as a URI

string o the object of the triple as a string

string lang the language code of the triple's object (optional)

string dt the datatype URI of the triple's object (optional)

Return:

boolean true if the triple was new, false if it already existed in the graph

add_rdf

public void add_rdf(mixed rdf, mixed base)

Add the triples parsed from the supplied RDF to the graph - let ARC guess the input

Param:

string rdf the RDF to parse

string base the base URI against which relative URIs in the RDF document will be resolved

Author:

Keith Alexander

add_rdfxml

public void add_rdfxml(mixed rdfxml, mixed base)

Add the triples parsed from the supplied RDF/XML to the graph

Param:

string rdfxml the RDF/XML to parse

string base the base URI against which relative URIs in the RDF/XML document will be resolved

add_resource_triple

public void add_resource_triple(mixed s, mixed p, mixed o)

Adds a triple with a resource object to the graph

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate URI of the triple

string o the object of the triple, either a URI or a blank node in the format :name

Return:

boolean true if the triple was new, false if it already existed in the graph

add_turtle

public void add_turtle(mixed turtle, mixed base)

Add the triples parsed from the supplied Turtle to the graph

See:

http://www.dajobe.org/2004/01/turtle

Param:

string turtle the Turtle to parse

string base the base URI against which relative URIs in the Turtle document will be resolved

diff

public void diff()

diff returns a simpleIndex consisting of all the statements in array1 that weren't found in any of the subsequent arrays

Param:

array1, array2, [array3, ...]

Return:

array

Author:

Keith

from_json

public void from_json(mixed json)

Replace the triples in the graph with those parsed from the supplied JSON

See:

http://n2.talis.com/wiki/RDF_JSON_Specification

Param:

string json the JSON to parse

from_rdfxml

public void from_rdfxml(mixed rdfxml, mixed base)

Replace the triples in the graph with those parsed from the supplied RDF/XML

Param:

string rdfxml the RDF/XML to parse

string base the base URI against which relative URIs in the RDF/XML document will be resolved

from_turtle

public void from_turtle(mixed turtle, mixed base)

Replace the triples in the graph with those parsed from the supplied Turtle

See:

http://www.dajobe.org/2004/01/turtle

Param:

string turtle the Turtle to parse

string base the base URI against which relative URIs in the Turtle document will be resolved

get_description

public void get_description(mixed resource_uri)

get_first_literal

public void get_first_literal(mixed s, mixed p, mixed default, mixed preferred_language)

Fetch the first literal value for a given subject and predicate. If there are multiple possible values then one is selected at random.

Param:

string s the subject to search for

string p the predicate to search for, or an array of predicates

string default a default value to use if no literal values are found

Return:

string the first literal value found or the supplied default if no values were found

get_first_resource

public void get_first_resource(mixed s, mixed p, mixed default)

Fetch the first resource value for a given subject and predicate. If there are multiple possible values then one is selected at random.

Param:

string s the subject to search for

string p the predicate to search for

string default a default value to use if no literal values are found

Return:

string the first resource value found or the supplied default if no values were found

get_index

public void get_index()

Get a copy of the graph's triple index

See:

http://n2.talis.com/wiki/RDF_PHP_Specification

get_label

public void get_label(mixed resource_uri, mixed capitalize, mixed use_qnames)

get_literal_triple_values

public void get_literal_triple_values(mixed s, mixed p)

Fetch the literal values for a given subject and predicate.

Param:

string s the subject to search for

string p the predicate to search for

Return:

array list of literals that are the objects of triples with the supplied subject and predicate

get_prefix

public void get_prefix(mixed ns)

get_resource_triple_values

public void get_resource_triple_values(mixed s, mixed p)

Fetch the resource values for a given subject and predicate.

Param:

string s the subject to search for

string p the predicate to search for

Return:

array list of URIs and blank nodes that are the objects of triples with the supplied subject and predicate

get_subject_properties

public void get_subject_properties(mixed s, mixed distinct)

Fetch the properties of a given subject and predicate.

Param:

string s the subject to search for

boolean distinct if true then duplicate properties are included only once (optional, default is true)

Return:

array list of property URIs

get_subject_property_values

public void get_subject_property_values(mixed s, mixed p)

Fetch the values for a given subject and predicate.

Param:

string s the subject to search for

string p the predicate to search for

Return:

array list of values of triples with the supplied subject and predicate

get_subject_subgraph

public void get_subject_subgraph(mixed s)

Fetch a subgraph where all triples have given subject

Param:

string s the subject to search for

Return:

SimpleGraph triples with the supplied subject

get_subjects

public void get_subjects()

Fetch an array of all the subjects

Return:

array

get_subjects_of_type

public void get_subjects_of_type(mixed t)

Fetch an array of all the subject that have and rdf type that matches that given

Param:

$t the type to match

Return:

array

get_subjects_where_literal

public void get_subjects_where_literal(mixed p, mixed o)

Fetch an array of all the subjects where the predicate and object match a ?s $p $o triple in the graph and the object is a literal value

Param:

$p the predicate to match

$o the resource object to match

Return:

array

get_subjects_where_resource

public void get_subjects_where_resource(mixed p, mixed o)

Fetch an array of all the subjects where the predicate and object match a ?s $p $o triple in the graph and the object is a resource

Param:

$p the predicate to match

$o the resource object to match

Return:

array

get_triples

public void get_triples()

Deprecated:

this is deprecated

has_literal_triple

public void has_literal_triple(mixed s, mixed p, mixed o, mixed lang, mixed dt)

Tests whether the graph contains the given triple

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate URI of the triple

string o the object of the triple as a literal value

Return:

boolean true if the triple exists in the graph, false otherwise

has_resource_triple

public void has_resource_triple(mixed s, mixed p, mixed o)

Tests whether the graph contains the given triple

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate URI of the triple

string o the object of the triple, either a URI or a blank node in the format :name

Return:

boolean true if the triple exists in the graph, false otherwise

has_triples_about

public void has_triples_about(mixed s)

Tests whether the graph contains a triple with the given subject

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

Return:

boolean true if the graph contains any triples with the specified subject, false otherwise

is_empty

public void is_empty()

Tests whether the graph contains any triples

Return:

boolean true if the graph contains no triples, false otherwise

make_resource_array

public void make_resource_array(mixed resource)

Constructs an array containing the type of the resource and its value

Param:

string resource a URI or blank node identifier (prefixed with : e.g. :name)

Return:

array an associative array with two keys: 'type' and 'value'. Type is either bnode or uri

merge

public void merge()

merge merges all rdf/json-style arrays passed as parameters

Param:

array1, array2, [array3, ...]

Return:

array

Author:

Keith

qname_to_uri

public void qname_to_uri(mixed qname)

Convert a QName to a URI using registered namespace prefixes

Param:

string qname the QName to convert

Return:

string the URI corresponding to the QName if a suitable prefix exists, null otherwise

reify

public void reify(mixed resources, mixed nodeID_prefix)

remove_all_triples

public void remove_all_triples()

Clears all triples out of the graph

remove_literal_triple

public void remove_literal_triple(mixed s, mixed p, mixed o)

remove_property_values

public void remove_property_values(mixed s, mixed p)

Removes all triples with the given subject and predicate

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate URI of the triple

remove_resource_triple

public void remove_resource_triple(mixed s, mixed p, mixed o)

Remove a triple with a resource object from the graph

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate URI of the triple

string o the object of the triple, either a URI or a blank node in the format :name

remove_triples_about

public void remove_triples_about(mixed s)

Remove all triples having the supplied subject

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

replace_resource

public void replace_resource(mixed look_for, mixed replace_with)

set_namespace_mapping

public void set_namespace_mapping(mixed prefix, mixed uri)

Map a portion of a URI to a short prefix for use when serialising the graph

Param:

string prefix the namespace prefix to associate with the URI

string uri the URI to associate with the prefix

subject_has_property

public void subject_has_property(mixed s, mixed p)

Tests whether the graph contains a triple with the given subject and predicate

Param:

string s the subject of the triple, either a URI or a blank node in the format :name

string p the predicate URI of the triple

Return:

boolean true if a matching triple exists in the graph, false otherwise

to_html

public void to_html(mixed s)

Serialise the graph to HTML

Return:

string a HTML version of the graph

to_json

public void to_json()

Serialise the graph to JSON

See:

http://n2.talis.com/wiki/RDF_JSON_Specification

Return:

string the JSON version of the graph

to_ntriples

public void to_ntriples()

Serialise the graph to N-Triples

See:

http://www.w3.org/TR/rdf-testcases/#ntriples

Return:

string the N-Triples version of the graph

to_rdfxml

public void to_rdfxml()

Serialise the graph to RDF/XML

Return:

string the RDF/XML version of the graph

to_turtle

public void to_turtle()

Serialise the graph to Turtle

See:

http://www.dajobe.org/2004/01/turtle

Return:

string the Turtle version of the graph

update_prefix_mappings

public void update_prefix_mappings()

uri_to_qname

public void uri_to_qname(mixed uri)

Convert a URI to a QName using registered namespace prefixes

Param:

string uri the URI to convert

Return:

string the QName corresponding to the URI if a suitable prefix exists, null otherwise

Field Detail

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