Java Doc for GenericChoiceFrame.java in  » RSS-RDF » Jena-2.5.5 » com » hp » hpl » jena » reasoner » rulesys » impl » 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.impl 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.hp.hpl.jena.reasoner.rulesys.impl.FrameObject
      com.hp.hpl.jena.reasoner.rulesys.impl.GenericChoiceFrame

All known Subclasses:   com.hp.hpl.jena.reasoner.rulesys.impl.GenericTripleMatchFrame,  com.hp.hpl.jena.reasoner.rulesys.impl.ChoicePointFrame,  com.hp.hpl.jena.reasoner.rulesys.impl.TopLevelTripleMatchFrame,
GenericChoiceFrame
public class GenericChoiceFrame extends FrameObject (Code)
Core properties of choice frames used use to represent the OR state of the backtracking search. Specific variants of this need to preserve additional choice state.

This is used in the inner loop of the interpreter and so is a pure data structure not an abstract data type and assumes privileged access to the interpreter state.


author:
   Dave Reynolds
version:
   $Revision: 1.7 $ on $Date: 2008/01/02 12:06:17 $


Field Summary
 intcac
    
 intcpc
    
 EnvironmentFrameenvFrame
    
 inttrailIndex
    


Method Summary
public  voidinit(LPInterpreter interpreter)
     Initialize a choice point to preserve the current context of the given intepreter and then call the given set of predicates.
public  voidsetContinuation(int pc, int ac)
     Set the continuation point for this frame.

Field Detail
cac
int cac(Code)
The continuation argument counter offset in the parent clause's arg stream



cpc
int cpc(Code)
The continuation program counter offet in the parent clause's byte code



envFrame
EnvironmentFrame envFrame(Code)
The environment frame describing the state of the AND tree at this choice point



trailIndex
int trailIndex(Code)
The top of the trail stack at the time of the call





Method Detail
init
public void init(LPInterpreter interpreter)(Code)
Initialize a choice point to preserve the current context of the given intepreter and then call the given set of predicates.
Parameters:
  interpreter - the LPInterpreter whose state is to be preserved



setContinuation
public void setContinuation(int pc, int ac)(Code)
Set the continuation point for this frame.



Fields inherited from com.hp.hpl.jena.reasoner.rulesys.impl.FrameObject
FrameObject link(Code)(Java Doc)

Methods inherited from com.hp.hpl.jena.reasoner.rulesys.impl.FrameObject
public void close()(Code)(Java Doc)
public void fastLinkTo(FrameObject prior)(Code)(Java Doc)
public FrameObject getLink()(Code)(Java Doc)
public void linkTo(FrameObject prior)(Code)(Java Doc)

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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