HistoryListNode.java

package org.maltparser.parser.history;

import org.maltparser.core.exception.MaltChainedException;
import org.maltparser.parser.history.action.GuideUserAction;

/**
 *
 * @author Johan Hall
 */
public class HistoryListNode implements HistoryNode {

    private HistoryNode previousNode;
    private GuideUserAction action;
//	private double score;
    private int position;

    public HistoryListNode(HistoryNode previousNode, GuideUserAction action) {
        setPreviousNode(previousNode);
        setAction(action);
//		setScore(score);
        if (previousNode != null) {
            setPosition(previousNode.getPosition() + 1);
        } else {
            setPosition(1);
        }
    }

//	public HistoryListNode(HistoryNode previousNode, GuideUserAction action, double score) {
//		setPreviousNode(previousNode);
//		setAction(action);
//		setScore(score);
//		if (previousNode != null) {
//			setPosition(previousNode.getPosition()+1);
//		} else {
//			setPosition(1);
//		}	
//	}
    public HistoryNode getPreviousNode() {
        return previousNode;
    }

    public GuideUserAction getAction() {
        return action;
    }

    public void setPreviousNode(HistoryNode node) {
        this.previousNode = node;
    }

    public void setAction(GuideUserAction action) {
        this.action = action;
    }

//	public double getScore() {
//		return score;
//	}
//
//	public void setScore(double score) {
//		this.score = score;
//	}
    private void setPosition(int p) {
        position = p;
    }

    public int getPosition() {
        return position;
    }

    public void clear() throws MaltChainedException {
        setPreviousNode(null);
        setAction(null);
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append(action);
        return sb.toString();
    }
}