net.sf.openschema

Class LocalChooser

java.lang.Object

net.sf.openschema.LocalChooser

Direct Known Subclasses:

GreedyChooser, RandomChooser, SimpleFocusChooser

public abstract class LocalChooser
extends Object

Abstract class for deciding which continuation to follow in the schema instantiation process.

Author:

Pablo Ariel Duboue

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LocalChooser.Decision LocalChooser Decision inner class.

Constructor Summary

Constructors

Constructor and Description
LocalChooser()

Method Summary

Modifier and Type	Method and Description
abstract LocalChooser.Decision	choose(List<Map<String,Object>> fds, List<Frame> defaultFoci, Object currentFocus, List<Frame> potentialFoci, List<Frame> focusStack, FrameSet frames) Decide which continuation to follow in the schema instantiation process.
List<Frame>	extractPotentialFoci(Map<String,Object> fd, FrameSet frames) Extract a set of potential foci from a given clause.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalChooser

public LocalChooser()

Method Detail

choose

public abstract LocalChooser.Decision choose(List<Map<String,Object>> fds,
                                             List<Frame> defaultFoci,
                                             Object currentFocus,
                                             List<Frame> potentialFoci,
                                             List<Frame> focusStack,
                                             FrameSet frames)

Decide which continuation to follow in the schema instantiation process.

extractPotentialFoci

public List<Frame> extractPotentialFoci(Map<String,Object> fd,
                                        FrameSet frames)

Extract a set of potential foci from a given clause. As the clauses store only frame names but not the frame themselves, the FrameSet is used to do that mapping.