io.konig.core

Interface Traversal

All Known Implementing Classes:

TraversalImpl

public interface Traversal

Method Summary

Modifier and Type	Method and Description
Traversal	addLiteral(String property, String value) Add a literal property value to all vertices in this traversal.
Traversal	addLiteral(org.openrdf.model.URI property, String value) Add a literal property value to all vertices in this traversal.
Traversal	addObject(String property, String iri) Add an object property to all vertices in this traversal.
Traversal	addProperty(org.openrdf.model.URI property, org.openrdf.model.Value value) Add a property to all vertices in this traversal
Traversal	addV(org.openrdf.model.Resource... iri) Add one or more vertices to the underlying graph
void	addValues(Set<org.openrdf.model.Value> set) Add the values in this traversal to a given Set.
Traversal	distinct() Filter the elements in this traversal so that each value is unique.
org.openrdf.model.URI	firstIRI(org.openrdf.model.URI predicate)
org.openrdf.model.Literal	firstLiteral(org.openrdf.model.URI predicate)
org.openrdf.model.Value	firstValue(org.openrdf.model.URI predicate) Iterate over the vertices in this traversal and get the value from the first edge having the specified predicate.
Vertex	firstVertex() From the current set of vertices in this traversal, get the first one.
Vertex	firstVertex(org.openrdf.model.URI predicate) Iterate over the vertices in this traversal, get the object of the first outgoing edge having the specified predicate, and return it as a Vertex.
Traversal	has(org.openrdf.model.URI property) Filter this traversal to those elements that have the specified property.
Traversal	hasValue(org.openrdf.model.URI property, String value) Filter this traversal to those elements that have the specified property value
Traversal	hasValue(org.openrdf.model.URI property, org.openrdf.model.Value value) Filter this traversal to those elements that have the specified property value
Traversal	in(org.openrdf.model.URI predicate) Move from the current set of vertices in this traversal to a new set of vertices by following incoming edges labeled by a given predicate.
Traversal	inTransitive(org.openrdf.model.URI predicate) Move inward from the current set of vertices in this traversal to the transitive closure of a given predicate.
Traversal	isIRI() Filter this traversal so that it includes only named individuals, i.e.
Traversal	out(org.openrdf.model.URI predicate) Move from the current set of vertices in this traversal to a new set of vertices by following outgoing edges labeled by a given predicate.
Traversal	outTransitive(org.openrdf.model.URI predicate) Move outward from the current set of vertices in this traversal to the transitive closure of a given predicate.
int	size() Get the number of elements in this traversal
Set<org.openrdf.model.URI>	toUriSet()
List<org.openrdf.model.Value>	toValueList()
List<Vertex>	toVertexList()
Traversal	union(Set<? extends org.openrdf.model.Value> set)
Traversal	union(org.openrdf.model.Value... v) Add a value to this Traversal.
Traversal	union(Vertex v) Add a vertex to this Traversal.

Method Detail

has

Traversal has(org.openrdf.model.URI property)

Filter this traversal to those elements that have the specified property.

Parameters:

property - The property used to filter the elements.

Returns:

A new traversal that is a filtered copy of this one.

size

int size()

Get the number of elements in this traversal

Returns:

the number of elements in this traversal

hasValue

Traversal hasValue(org.openrdf.model.URI property,
                   org.openrdf.model.Value value)

Filter this traversal to those elements that have the specified property value

Parameters:

property - The property used to filter the elements

value - The target value of the property

Returns:

A new Traversal that is a filtered copy of this one.

hasValue

Traversal hasValue(org.openrdf.model.URI property,
                   String value)

Filter this traversal to those elements that have the specified property value

Parameters:

property - The property used to filter the elements

value - The string value of the property

Returns:

A new Traversal that is a filtered copy of this one.

isIRI

Traversal isIRI()

Filter this traversal so that it includes only named individuals, i.e. resources identified by an IRI.

Returns:

A new Traversal that is a filtered copy of this one.

addProperty

Traversal addProperty(org.openrdf.model.URI property,
                      org.openrdf.model.Value value)

Add a property to all vertices in this traversal

Parameters:

property - The IRI for the property being added

value - The value of the property being added.

Returns:

This traversal

addObject

Traversal addObject(String property,
                    String iri)

Add an object property to all vertices in this traversal. This is a convenience method that converts the supplied strings to URI values, and then invokes the addProperty method.

Parameters:

property - The IRI for the property that is being added.

iri - The IRI for the resource that is the value of the property

Returns:

This traversal

distinct

Traversal distinct()

Filter the elements in this traversal so that each value is unique.

Returns:

This traversal

union

Traversal union(Vertex v)

Add a vertex to this Traversal.

Parameters:

v - The vertex to be added.

Returns:

This traversal

union

Traversal union(org.openrdf.model.Value... v)

Add a value to this Traversal.

Parameters:

v - The value to be added.

Returns:

This traversal

union

Traversal union(Set<? extends org.openrdf.model.Value> set)

addLiteral

Traversal addLiteral(String property,
                     String value)

Add a literal property value to all vertices in this traversal.

Parameters:

property - The IRI for the property that is being added.

value - The value of the property

Returns:

This traversal

addLiteral

Traversal addLiteral(org.openrdf.model.URI property,
                     String value)

Add a literal property value to all vertices in this traversal.

Parameters:

property - The IRI for the property that is being added.

value - The value of the property

Returns:

This traversal

addV

Traversal addV(org.openrdf.model.Resource... iri)

Add one or more vertices to the underlying graph

Parameters:

iri - The vertex (or vertices) to add.

Returns:

A new Traversal containing the newly added vertices.

firstValue

org.openrdf.model.Value firstValue(org.openrdf.model.URI predicate)

Iterate over the vertices in this traversal and get the value from the first edge having the specified predicate.

Parameters:

predicate - The predicate for the value requested.

Returns:

The Value requested, or null if no such value exists.

firstVertex

Vertex firstVertex(org.openrdf.model.URI predicate)

Iterate over the vertices in this traversal, get the object of the first outgoing edge having the specified predicate, and return it as a Vertex.

Parameters:

predicate - The predicate for the Vertex requested

Returns:

The Vertex requested, or null if no such Vertex exists.

firstIRI

org.openrdf.model.URI firstIRI(org.openrdf.model.URI predicate)

out

Traversal out(org.openrdf.model.URI predicate)

Move from the current set of vertices in this traversal to a new set of vertices by following outgoing edges labeled by a given predicate.

Parameters:

predicate - The label for the edge to be traversed

Returns:

A new Traversal encapsulating the vertices at the other end of the outgoing edges with the specified predicate.

outTransitive

Traversal outTransitive(org.openrdf.model.URI predicate)

Move outward from the current set of vertices in this traversal to the transitive closure of a given predicate.

Parameters:

predicate - The predicate whose transitive closure is to be computed.

Returns:

This traversal updated with the transitive closure.

inTransitive

Traversal inTransitive(org.openrdf.model.URI predicate)

Move inward from the current set of vertices in this traversal to the transitive closure of a given predicate.

Parameters:

predicate - The predicate whose transitive closure is to be computed.

Returns:

This traversal updated with the transitive closure.

in

Traversal in(org.openrdf.model.URI predicate)

Move from the current set of vertices in this traversal to a new set of vertices by following incoming edges labeled by a given predicate.

Parameters:

predicate - The label for the edges to be traversed.

Returns:

A new Traversal encapsulating the vertices at the other end of the incoming edges.

firstVertex

Vertex firstVertex()

From the current set of vertices in this traversal, get the first one.

Returns:

The first vertex in this traversal.

toVertexList

List<Vertex> toVertexList()

toValueList

List<org.openrdf.model.Value> toValueList()

toUriSet

Set<org.openrdf.model.URI> toUriSet()

addValues

void addValues(Set<org.openrdf.model.Value> set)

Add the values in this traversal to a given Set.

Parameters:

set - The set into which values should be added.

firstLiteral

org.openrdf.model.Literal firstLiteral(org.openrdf.model.URI predicate)