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Java Source Code / Java Documentation » RSS RDF » Jena 2.5.5 » com.hp.hpl.jena.rdf.model 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


com.hp.hpl.jena.rdf.model.RDFNode

RDFNode
public interface RDFNode extends FrontsNode(Code)
Interface covering RDF resources and literals. Allows probing whether a node is a literal/[blank, URI]resource, moving nodes from model to model, and viewing them as different Java types using the .as() polymorphism.
author:
   bwm, kers




Method Summary
public  RDFNodeas(Class view)
     RDFNodes can be converted to different implementation types.
public  booleancanAs(Class view)
     Answer true iff this RDFNode can be viewed as an instance of view: that is, if it has already been viewed in this way, or if it has an attached model in which it has properties that permit it to be viewed in this way.
public  RDFNodeinModel(Model m)
     Answer a .equals() version of this node, except that it's in the model m.
public  booleanisAnon()
     Answer true iff this RDFNode is an anonynous resource.
public  booleanisLiteral()
     Answer true iff this RDFNode is a literal resource.
public  booleanisResource()
     Answer true iff this RDFNode is a URI resource or an anonynous resource (ie is not a literal).
public  booleanisURIResource()
     Answer true iff this RDFNode is an named resource.
public  StringtoString()
     Answer a String representation of the node.
public  ObjectvisitWith(RDFVisitor rv)
     Apply the appropriate method of the visitor to this node's content and return the result.



Method Detail
as
public RDFNode as(Class view)(Code)
RDFNodes can be converted to different implementation types. Convert this RDFNode to a type supporting the viewinterface. The resulting RDFNode should be an instance of view and should have any internal invariants as specified.

If the RDFNode has no Model attached, it can only be .as()ed to a type it (this particular RDFNOde) already has.

If the RDFNode cannot be converted, an UnsupportedPolymorphism exception is thrown..




canAs
public boolean canAs(Class view)(Code)
Answer true iff this RDFNode can be viewed as an instance of view: that is, if it has already been viewed in this way, or if it has an attached model in which it has properties that permit it to be viewed in this way. If canAs returns true, as on the same view should deliver an instance of that class.



inModel
public RDFNode inModel(Model m)(Code)
Answer a .equals() version of this node, except that it's in the model m.
Parameters:
  m - a model to move the node to this, if it's already in m (or no model), a copy in m otherwise



isAnon
public boolean isAnon()(Code)
Answer true iff this RDFNode is an anonynous resource. Useful for one-off tests: see also visitWith() for making literal/anon/URI choices.



isLiteral
public boolean isLiteral()(Code)
Answer true iff this RDFNode is a literal resource. Useful for one-off tests: see also visitWith() for making literal/anon/URI choices.



isResource
public boolean isResource()(Code)
Answer true iff this RDFNode is a URI resource or an anonynous resource (ie is not a literal). Useful for one-off tests: see also visitWith() for making literal/anon/URI choices.



isURIResource
public boolean isURIResource()(Code)
Answer true iff this RDFNode is an named resource. Useful for one-off tests: see also visitWith() for making literal/anon/URI choices.



toString
public String toString()(Code)
Answer a String representation of the node. The form of the string depends on the type of the node and is intended for human consumption, not machine analysis.



visitWith
public Object visitWith(RDFVisitor rv)(Code)
Apply the appropriate method of the visitor to this node's content and return the result.
Parameters:
  rv - an RDFVisitor with a method for URI/blank/literal nodes the result returned by the selected method



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