org.ontoware.rdf2go.model.node
Interface Node

All Superinterfaces:

java.lang.Comparable<Node>, NodeOrVariable

All Known Subinterfaces:

BlankNode, DatatypeLiteral, LanguageTagLiteral, Literal, PlainLiteral, Resource, URI

All Known Implementing Classes:

ResourceImpl, URIImpl

public interface Node
extends NodeOrVariable, java.lang.Comparable<Node>

Marker interface for RDF types (URI, BlankNode, Literal) The following sorting order is defined by different Node types: URI > BlankNode > PlainLiteral > LanguageTaggedLiteral > DatatypedLiteral Nodes are expected to have correct implementations of equals(Object other) and hashcode()

Author:

voelkel

Method Summary

BlankNode	asBlankNode() A convenience method for a cast to org.ontoware.rdf2go.model.node.BlankNode
DatatypeLiteral	asDatatypeLiteral() A convenience method for a cast to org.ontoware.rdf2go.model.node.DatatypeLiteral
LanguageTagLiteral	asLanguageTagLiteral() A convenience method for a cast to org.ontoware.rdf2go.model.node.LanguageTagLiteral
Literal	asLiteral() A convenience method for a cast to org.ontoware.rdf2go.model.node.Literal
Resource	asResource() A convenience method for a cast to org.ontoware.rdf2go.model.node.Resource
URI	asURI() A convenience method for a cast to org.ontoware.rdf2go.model.node.URI
java.lang.String	toSPARQL() A convenience function to create SPARQL queries from nodes

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

asResource

Resource asResource()
                    throws java.lang.ClassCastException

A convenience method for a cast to org.ontoware.rdf2go.model.node.Resource

Returns:

this Node casted as a Resource

Throws:

java.lang.ClassCastException - if the node is not a Resource

asLiteral

Literal asLiteral()
                  throws java.lang.ClassCastException

A convenience method for a cast to org.ontoware.rdf2go.model.node.Literal

Returns:

this Node casted as a Literal

Throws:

java.lang.ClassCastException - if the node is not a Literal

asDatatypeLiteral

DatatypeLiteral asDatatypeLiteral()
                                  throws java.lang.ClassCastException

A convenience method for a cast to org.ontoware.rdf2go.model.node.DatatypeLiteral

Returns:

this Node casted as a DatatypeLiteral

Throws:

java.lang.ClassCastException - if the node is not a DatatypeLiteral

asLanguageTagLiteral

LanguageTagLiteral asLanguageTagLiteral()
                                        throws java.lang.ClassCastException

A convenience method for a cast to org.ontoware.rdf2go.model.node.LanguageTagLiteral

Returns:

this Node casted as a LanguageTagLiteral

Throws:

java.lang.ClassCastException - if the node is not a LanguageTagLiteral

asURI

URI asURI()
          throws java.lang.ClassCastException

A convenience method for a cast to org.ontoware.rdf2go.model.node.URI

Returns:

this Node casted as a URI

Throws:

java.lang.ClassCastException - if the node is not a URI

asBlankNode

BlankNode asBlankNode()
                      throws java.lang.ClassCastException

A convenience method for a cast to org.ontoware.rdf2go.model.node.BlankNode

Returns:

this Node casted as a BlankNode

Throws:

java.lang.ClassCastException - if the node is not a BlankNode

toSPARQL

java.lang.String toSPARQL()

A convenience function to create SPARQL queries from nodes

Returns:

this node in SPARQL syntax. A URI is wrapped in '<' and '>'. A literal is wrapped in '"' chars and escaped.