com.bigdata.blueprints

Class DefaultBlueprintsValueFactory

java.lang.Object

com.bigdata.blueprints.DefaultBlueprintsValueFactory

All Implemented Interfaces:

BlueprintsValueFactory

Direct Known Subclasses:

BigdataRDFFactory

public class DefaultBlueprintsValueFactory
extends Object
implements BlueprintsValueFactory

Default implementation of a BlueprintsValueFactory for converting blueprints data to RDF and back again. Uses simple namespacing and URL encoding to round trip URIs.

Author:

mikepersonick

Field Summary

Fields

Modifier and Type	Field and Description
org.openrdf.model.URI	EDGE URI used to represent a Edge.
String	EDGE_NAMESPACE Namespace for edges.
String	GRAPH_NAMESPACE Namespace for non vertex and edge data (property names).
org.openrdf.model.URI	LABEL URI used for labeling edges.
org.openrdf.model.URI	TYPE URI used for typing elements.
org.openrdf.model.URI	VERTEX URI used to represent a Vertex.
String	VERTEX_NAMESPACE Namespace for vertices.
protected org.openrdf.model.ValueFactory	vf The Sesame value factory for URIs and Literals.

Constructor Summary

Constructors

Constructor and Description
DefaultBlueprintsValueFactory(String graphNamespace, String vertexNamespace, String edgeNamespace, org.openrdf.model.URI type, org.openrdf.model.URI vertex, org.openrdf.model.URI edge, org.openrdf.model.URI label) Construct an instance with a simple Sesame ValueFactoryImpl.
DefaultBlueprintsValueFactory(org.openrdf.model.ValueFactory vf, String graphNamespace, String vertexNamespace, String edgeNamespace, org.openrdf.model.URI type, org.openrdf.model.URI vertex, org.openrdf.model.URI edge, org.openrdf.model.URI label) Construct an instance with the specified ValueFactoryImpl.

Method Summary

Methods

Modifier and Type	Method and Description
Object	fromLiteral(org.openrdf.model.Literal l) Create a blueprints property value from a datatyped literal.
String	fromURI(org.openrdf.model.URI uri) Round-trip a URI back into a graph element ID or property name.
org.openrdf.model.URI	getEdgeURI() Return the URI used to identify edges.
org.openrdf.model.URI	getLabelURI() Return the URI used for labeling edges.
org.openrdf.model.URI	getTypeURI() Return the URI used for typing elements.
org.openrdf.model.URI	getVertexURI() Return the URI used to identify vertices.
org.openrdf.model.URI	toEdgeURI(Object key) Create an edge URI from a blueprints edge id.
org.openrdf.model.Literal	toLiteral(Object value) Create a datatyped literal from a blueprints property value.
org.openrdf.model.URI	toPropertyURI(String property) Create a property URI from a blueprints property name.
org.openrdf.model.URI	toURI(com.tinkerpop.blueprints.Element e) Create an element URI from a blueprints element id.
org.openrdf.model.URI	toVertexURI(Object key) Create a vertex URI from a blueprints vertex id.

Methods inherited from class java.lang.Object

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

Field Detail

GRAPH_NAMESPACE

public final String GRAPH_NAMESPACE

Namespace for non vertex and edge data (property names).

VERTEX_NAMESPACE

public final String VERTEX_NAMESPACE

Namespace for vertices.

EDGE_NAMESPACE

public final String EDGE_NAMESPACE

Namespace for edges.

TYPE

public final org.openrdf.model.URI TYPE

URI used for typing elements.

VERTEX

public final org.openrdf.model.URI VERTEX

URI used to represent a Vertex.

EDGE

public final org.openrdf.model.URI EDGE

URI used to represent a Edge.

LABEL

public final org.openrdf.model.URI LABEL

URI used for labeling edges.

vf

protected final org.openrdf.model.ValueFactory vf

The Sesame value factory for URIs and Literals.

Constructor Detail

DefaultBlueprintsValueFactory

public DefaultBlueprintsValueFactory(String graphNamespace,
                             String vertexNamespace,
                             String edgeNamespace,
                             org.openrdf.model.URI type,
                             org.openrdf.model.URI vertex,
                             org.openrdf.model.URI edge,
                             org.openrdf.model.URI label)

Construct an instance with a simple Sesame ValueFactoryImpl.

DefaultBlueprintsValueFactory

public DefaultBlueprintsValueFactory(org.openrdf.model.ValueFactory vf,
                             String graphNamespace,
                             String vertexNamespace,
                             String edgeNamespace,
                             org.openrdf.model.URI type,
                             org.openrdf.model.URI vertex,
                             org.openrdf.model.URI edge,
                             org.openrdf.model.URI label)

Construct an instance with the specified ValueFactoryImpl.

Method Detail

getTypeURI

public org.openrdf.model.URI getTypeURI()

Description copied from interface: BlueprintsValueFactory

Return the URI used for typing elements.

Specified by:

getTypeURI in interface BlueprintsValueFactory

getVertexURI

public org.openrdf.model.URI getVertexURI()

Description copied from interface: BlueprintsValueFactory

Return the URI used to identify vertices.

Specified by:

getVertexURI in interface BlueprintsValueFactory

getEdgeURI

public org.openrdf.model.URI getEdgeURI()

Description copied from interface: BlueprintsValueFactory

Return the URI used to identify edges.

Specified by:

getEdgeURI in interface BlueprintsValueFactory

getLabelURI

public org.openrdf.model.URI getLabelURI()

Description copied from interface: BlueprintsValueFactory

Return the URI used for labeling edges.

Specified by:

getLabelURI in interface BlueprintsValueFactory

toVertexURI

public org.openrdf.model.URI toVertexURI(Object key)

Create a vertex URI from a blueprints vertex id.

Specified by:

toVertexURI in interface BlueprintsValueFactory

toEdgeURI

public org.openrdf.model.URI toEdgeURI(Object key)

Create an edge URI from a blueprints edge id.

Specified by:

toEdgeURI in interface BlueprintsValueFactory

toURI

public org.openrdf.model.URI toURI(com.tinkerpop.blueprints.Element e)

Create an element URI from a blueprints element id.

Specified by:

toURI in interface BlueprintsValueFactory

toPropertyURI

public org.openrdf.model.URI toPropertyURI(String property)

Create a property URI from a blueprints property name.

Specified by:

toPropertyURI in interface BlueprintsValueFactory

fromURI

public String fromURI(org.openrdf.model.URI uri)

Round-trip a URI back into a graph element ID or property name.

Specified by:

fromURI in interface BlueprintsValueFactory

toLiteral

public org.openrdf.model.Literal toLiteral(Object value)

Create a datatyped literal from a blueprints property value.

Supports: Float, Double, Integer, Long, Boolean, Short, Byte, and String.

Specified by:

toLiteral in interface BlueprintsValueFactory

fromLiteral

public Object fromLiteral(org.openrdf.model.Literal l)

Create a blueprints property value from a datatyped literal.

Return a graph property from a datatyped literal using its XSD datatype.

Supports: Float, Double, Integer, Long, Boolean, Short, Byte, and String.

Specified by:

fromLiteral in interface BlueprintsValueFactory