 All Implemented Interfaces:
FrontsNode
 Direct Known Subclasses:
LiteralImpl
,ResourceImpl
A specialisation of Polymorphic that models an extended node in a an extended graph. An extended node wraps a normal node, and adds additional convenience access or user affordances, though the state remains in the graph itself.

Constructor Summary

Method Summary
Modifier and TypeMethodDescription<T extends RDFNode>
Tallow subclasses to implement RDFNode & its subinterfaceasNode()
Answer the graph node that this enhanced node wraps<X extends RDFNode>
booleanAPIlevel method for polymorphic testingfinal boolean
An enhanced node is equal to another enhanced node n iff the underlying nodes are equal.getGraph()
Answer the graph containing this nodefinal int
hashCode()
The hash code of an enhanced node is defined to be the same as the underlying node.final boolean
isAnon()
An enhanced node is Anon[ymous] iff its underlying node is Blank.final boolean
An enhanced node is Literal iff its underlying node is too.final boolean
An enhanced node is a resource if it's node is a URI node, a blank node or a triple term.final boolean
An enhanced node is a statement resource iff its underlying node is a triple term (RDFstar).final boolean
An enhanced node is a URI resource iff its underlying node is too.boolean
isValid()
answer true iff this enhanced node is still underpinned in the graph by triples appropriate to its type.<X extends RDFNode>
XAnswer a facet of this node, where that facet is denoted by the given type.Methods inherited from class org.apache.jena.enhanced.Polymorphic
addView, supports

Constructor Details

EnhNode


Method Details

asNode
Answer the graph node that this enhanced node wraps Specified by:
asNode
in interfaceFrontsNode
 Returns:
 A plain node

getGraph
Answer the graph containing this node Returns:
 An enhanced graph

isAnon
public final boolean isAnon()An enhanced node is Anon[ymous] iff its underlying node is Blank. 
isLiteral
public final boolean isLiteral()An enhanced node is Literal iff its underlying node is too. 
isURIResource
public final boolean isURIResource()An enhanced node is a URI resource iff its underlying node is too. 
isStmtResource
public final boolean isStmtResource()An enhanced node is a statement resource iff its underlying node is a triple term (RDFstar). 
isResource
public final boolean isResource()An enhanced node is a resource if it's node is a URI node, a blank node or a triple term. 
viewAs
Answer a facet of this node, where that facet is denoted by the given type. Parameters:
t
 A type denoting the desired facet of the underlying node Returns:
 An enhanced nodet that corresponds to t; this may be this Java object, or a different object.

as
allow subclasses to implement RDFNode & its subinterface 
canAs
APIlevel method for polymorphic testing 
hashCode
public final int hashCode()The hash code of an enhanced node is defined to be the same as the underlying node. Specified by:
hashCode
in classPolymorphic<RDFNode>
 Returns:
 The hashcode as an int

equals
An enhanced node is equal to another enhanced node n iff the underlying nodes are equal. We generalise to allow the other object to be any class implementing asNode, because we allow other implemementations of Resource than EnhNodes, at least in principle. This is deemed to be a complete and correct interpretation of enhanced node equality, which is why this method has been marked final. Specified by:
equals
in classPolymorphic<RDFNode>
 Parameters:
o
 An object to test for equality with this node Returns:
 True if o is equal to this node.

isValid
public boolean isValid()Description copied from class:Polymorphic
answer true iff this enhanced node is still underpinned in the graph by triples appropriate to its type. Specified by:
isValid
in classPolymorphic<RDFNode>
