termnode.java

自己写的search engine, 有 boolean search, fuzzy search

package searchingEngine.dataPreprocessing.invertedFile;

import java.util.*;
import java.io.Serializable;

public class TermNode implements Serializable, Comparable<TermNode> {
	public final String term;
	public final LinkedList<DocNode> doc_list;
	public final int df;
	private double idf = -1.0;
	
	public TermNode(String term) {
		this.term = term;
		this.doc_list = new LinkedList<DocNode>();;
		this.df = 0;
	}
	
	public TermNode(String term, LinkedList<DocNode> doc_list) {
		this.term = term;
		this.doc_list = doc_list;
		df = doc_list.size();
	}
	public void setIdf(double idf) {
		this.idf=idf;
	}
	
	public double getIdf(){
		return idf;
	}
	
	public int compareTo(TermNode arg0) {
		return term.compareToIgnoreCase(arg0.term);
		
	}
	
	public int compareTo(String arg0) {
		return term.compareToIgnoreCase(arg0);
	}
	
	public boolean equals(TermNode arg0) {
		return term.intern() == arg0.term.intern();
	}
	
	public boolean equals(String arg0) {
		return term.intern() == arg0.intern();
	}
	public String toString(){
		String result = term + " " + df + " " + idf + " [ ";
		for (int i = 0;i<doc_list.size() ; i++ ){
			result+= doc_list.get(i) + " ";
		}
		return result + "]";
	}
}