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


com.hp.hpl.jena.reasoner.rulesys.impl.FRuleEngineI

All known Subclasses:   com.hp.hpl.jena.reasoner.rulesys.impl.RETEEngine,  com.hp.hpl.jena.reasoner.rulesys.impl.FRuleEngine,
FRuleEngineI
public interface FRuleEngineI (Code)
Rule engines implement the internals of forward rule inference graphs and the forward part of hybrid graphs. This interface abstracts the interface onto such engines to allow a graph to switch between direct and RETE style implementations.
author:
   Dave Reynolds
version:
   $Revision: 1.9 $ on $Date: 2008/01/02 12:06:15 $




Method Summary
public  voidadd(Triple t)
     Add one triple to the data graph, run any rules triggered by the new data item, recursively adding any generated triples.
public  booleandelete(Triple t)
     Remove one triple to the data graph.
public  voidfastInit(Finder inserts)
     Process all available data.
public  longgetNRulesFired()
    
public  ObjectgetRuleStore()
     Access the precomputed internal rule form.
public  voidinit(boolean ignoreBrules, Finder inserts)
     Process all available data.
public  voidsetDerivationLogging(boolean recordDerivations)
    
public  voidsetRuleStore(Object ruleStore)
     Set the internal rule from from a precomputed state.
public  booleanshouldTrace()
     Return true if the internal engine state means that tracing is worthwhile.



Method Detail
add
public void add(Triple t)(Code)
Add one triple to the data graph, run any rules triggered by the new data item, recursively adding any generated triples.



delete
public boolean delete(Triple t)(Code)
Remove one triple to the data graph. true if the effects could be correctly propagated orfalse if not (in which case the entire engine should be restarted).



fastInit
public void fastInit(Finder inserts)(Code)
Process all available data. This version expects that all the axioms have already be preprocessed and the rules have been compiled
Parameters:
  inserts - the set of triples to be processed, normally this is theraw data graph but may include additional deductions made by preprocessing hooks



getNRulesFired
public long getNRulesFired()(Code)
Return the number of rules fired since this rule engine instance was created and initialized



getRuleStore
public Object getRuleStore()(Code)
Access the precomputed internal rule form. Used when precomputing the internal axiom closures.



init
public void init(boolean ignoreBrules, Finder inserts)(Code)
Process all available data. This should be called once a deductions graph has be prepared and loaded with any precomputed deductions. It will process the rule axioms and all relevant existing exiting data entries.
Parameters:
  ignoreBrules - set to true if rules written in backward notation should be ignored
Parameters:
  inserts - the set of triples to be processed, normally this is theraw data graph but may include additional deductions made by preprocessing hooks



setDerivationLogging
public void setDerivationLogging(boolean recordDerivations)(Code)
Set to true to enable derivation caching



setRuleStore
public void setRuleStore(Object ruleStore)(Code)
Set the internal rule from from a precomputed state.



shouldTrace
public boolean shouldTrace()(Code)
Return true if the internal engine state means that tracing is worthwhile. It will return false during the axiom bootstrap phase.



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