Java Doc for BasicForwardRuleReasoner.java in  » RSS-RDF » Jena-2.5.5 » com » hp » hpl » jena » reasoner » rulesys » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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


java.lang.Object
   com.hp.hpl.jena.reasoner.rulesys.BasicForwardRuleReasoner

All known Subclasses:   com.hp.hpl.jena.reasoner.rulesys.impl.oldCode.OWLRuleReasoner,
BasicForwardRuleReasoner
public class BasicForwardRuleReasoner implements Reasoner(Code)
Reasoner implementation which augments or transforms an RDF graph according to a set of rules. This trivial version does not support separate schema processing. The actual work is done in the inference graph implementation.
author:
   Dave Reynolds * @version $Revision: 1.19 $ on $Date: 2008/01/02 12:07:47 $


Field Summary
protected  Capabilitiescapabilities
    
protected  ReasonerFactoryfactory
    
protected  booleanrecordDerivations
    
protected  Listrules
    
protected  InfGraphschemaGraph
    
protected  booleantraceOn
    

Constructor Summary
public  BasicForwardRuleReasoner(List rules)
     Constructor.
public  BasicForwardRuleReasoner(List rules, ReasonerFactory factory)
    

Method Summary
public  voidaddDescription(Model configSpec, Resource base)
     Add a configuration description for this reasoner into a partial configuration specification model.
public  InfGraphbind(Graph data)
     Attach the reasoner to a set of RDF data to process. The reasoner may already have been bound to specific rules or ontology axioms (encoded in RDF) through earlier bindRuleset calls.
Parameters:
  data - the RDF data to be processed, some reasoners may restrictthe range of RDF which is legal here (e.g.
public  ReasonerbindSchema(Graph tbox)
     Precompute the implications of a schema graph.
public  ReasonerbindSchema(Model tbox)
     Precompute the implications of a schema Model.
public  CapabilitiesgetGraphCapabilities()
     Return the Jena Graph Capabilties that the inference graphs generated by this reasoner are expected to conform to.
public  ModelgetReasonerCapabilities()
     Return a description of the capabilities of this reasoner encoded in RDF.
public  ListgetRules()
    
public  voidsetDerivationLogging(boolean logOn)
     Switch on/off drivation logging. If set to true then the InfGraph created from the bind operation will start life with recording of derivations switched on.
public  voidsetParameter(Property parameter, Object value)
     Set a configuration paramter for the reasoner.
public  voidsetTraceOn(boolean state)
     Set the state of the trace flag.
public  booleansupportsProperty(Property property)
     Determine whether the given property is recognized and treated specially by this reasoner.

Field Detail
capabilities
protected Capabilities capabilities(Code)
The graph capabilities of the infgraphs generated by this reasoner



factory
protected ReasonerFactory factory(Code)
The parent reasoner factory which is consulted to answer capability questions



recordDerivations
protected boolean recordDerivations(Code)
Flag to set whether the inference class should record derivations



rules
protected List rules(Code)
The rules to be used by this instance of the forward engine



schemaGraph
protected InfGraph schemaGraph(Code)
A precomputed set of schema deductions



traceOn
protected boolean traceOn(Code)
Flag which, if true, enables tracing of rule actions to logger.info




Constructor Detail
BasicForwardRuleReasoner
public BasicForwardRuleReasoner(List rules)(Code)
Constructor. This is the raw version that does not reference a ReasonerFactory and so has no capabilities description.
Parameters:
  rules - a list of Rule instances which defines the ruleset to process



BasicForwardRuleReasoner
public BasicForwardRuleReasoner(List rules, ReasonerFactory factory)(Code)
Constructor
Parameters:
  rules - a list of Rule instances which defines the ruleset to process
Parameters:
  factory - the parent reasoner factory which is consulted to answer capability questions




Method Detail
addDescription
public void addDescription(Model configSpec, Resource base)(Code)
Add a configuration description for this reasoner into a partial configuration specification model.
Parameters:
  configSpec - a Model into which the configuration information should be placed
Parameters:
  base - the Resource to which the configuration parameters should be added.



bind
public InfGraph bind(Graph data) throws ReasonerException(Code)
Attach the reasoner to a set of RDF data to process. The reasoner may already have been bound to specific rules or ontology axioms (encoded in RDF) through earlier bindRuleset calls.
Parameters:
  data - the RDF data to be processed, some reasoners may restrictthe range of RDF which is legal here (e.g. syntactic restrictions in OWL). an inference graph through which the data+reasoner can be queried.
throws:
  ReasonerException - if the data is ill-formed according to theconstraints imposed by this reasoner.



bindSchema
public Reasoner bindSchema(Graph tbox) throws ReasonerException(Code)
Precompute the implications of a schema graph. The statements in the graph will be combined with the data when the final InfGraph is created.



bindSchema
public Reasoner bindSchema(Model tbox) throws ReasonerException(Code)
Precompute the implications of a schema Model. The statements in the graph will be combined with the data when the final InfGraph is created.



getGraphCapabilities
public Capabilities getGraphCapabilities()(Code)
Return the Jena Graph Capabilties that the inference graphs generated by this reasoner are expected to conform to.



getReasonerCapabilities
public Model getReasonerCapabilities()(Code)
Return a description of the capabilities of this reasoner encoded in RDF. These capabilities may be static or may depend on configuration information supplied at construction time. May be null if there are no useful capabilities registered.



getRules
public List getRules()(Code)
Return the this of Rules used by this reasoner a List of Rule objects



setDerivationLogging
public void setDerivationLogging(boolean logOn)(Code)
Switch on/off drivation logging. If set to true then the InfGraph created from the bind operation will start life with recording of derivations switched on. This is currently only of relevance to rule-based reasoners.

Default - false.




setParameter
public void setParameter(Property parameter, Object value)(Code)
Set a configuration paramter for the reasoner. The supported parameters are:
  • BasicForwaredRuleReasoner.PROPderivationLogging - set to true to enable recording all rule derivations
  • BasicForwaredRuleReasoner.PROPtraceOn - set to true to enable verbose trace information to be sent to the logger INFO channel

Parameters:
  parameter - the property identifying the parameter to be changed
Parameters:
  value - the new value for the parameter, typically this is a wrappedjava object like Boolean or Integer.



setTraceOn
public void setTraceOn(boolean state)(Code)
Set the state of the trace flag. If set to true then rule firings are logged out to the Log at "INFO" level.



supportsProperty
public boolean supportsProperty(Property property)(Code)
Determine whether the given property is recognized and treated specially by this reasoner. This is a convenience packaging of a special case of getCapabilities.
Parameters:
  property - the property which we want to ask the reasoner about, given as a Node sincethis is part of the SPI rather than API true if the given property is handled specially by the reasoner.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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