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Lucene使用SortField对多个字段进行排序

2015-04-03 10:36 344 查看

/*

* 这里的类实现的功能是对多个字段进行排序

* 比单个难度要大，但是有相应的方法，可以满足不同项目的不同需求

* */

package score;

import java.io.IOException;

import org.apache.lucene.analysis.standard.StandardAnalyzer;

import org.apache.lucene.document.Document;

import org.apache.lucene.document.Field;

import org.apache.lucene.index.IndexWriter;

import org.apache.lucene.index.Term;

import org.apache.lucene.search.Hits;

import org.apache.lucene.search.IndexSearcher;

import org.apache.lucene.search.RangeQuery;

import org.apache.lucene.search.Sort;

import org.apache.lucene.search.SortField;

public class SortFieldTest {

public SortFieldTest(String INDEX_STORE_PATH){

try{

IndexWriter writer = new IndexWriter(INDEX_STORE_PATH, new StandardAnalyzer(), true);

writer.setUseCompoundFile(false);

//首先定义文本

Document doc1 = new Document();

Field f1 = new Field("bookNumber", "0000001", Field.Store.YES, Field.Index.UN_TOKENIZED);

Field f2 = new Field("bookname", "钢铁是怎样炼成的", Field.Store.YES, Field.Index.TOKENIZED);

Field f3 = new Field("publishdate", "1970-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc1.add(f1);

doc1.add(f2);

doc1.add(f3);

Document doc2 = new Document();

f1 = new Field("bookNumber", "0000002", Field.Store.YES, Field.Index.UN_TOKENIZED);

f2 = new Field("bookname", "钢铁战士", Field.Store.YES, Field.Index.TOKENIZED);

f3 = new Field("publishdate", "1980-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc2.add(f1);

doc2.add(f2);

doc2.add(f3);

Document doc3 = new Document();

f1 = new Field("bookNumber", "0000003", Field.Store.YES, Field.Index.UN_TOKENIZED);

f2 = new Field("bookname", "篱笆女人和狗", Field.Store.YES, Field.Index.TOKENIZED);

f3 = new Field("publishdate", "1990-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc3.add(f1);

doc3.add(f2);

doc3.add(f3);

Document doc4 = new Document();

f1 = new Field("bookNumber", "0000004", Field.Store.YES, Field.Index.UN_TOKENIZED);

f2 = new Field("bookname", "女人是水做的", Field.Store.YES, Field.Index.TOKENIZED);

f3 = new Field("publishdate", "1999-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc4.add(f1);

doc4.add(f2);

doc4.add(f3);

Document doc5 = new Document();

f1 = new Field("bookNumber", "0000005", Field.Store.YES, Field.Index.UN_TOKENIZED);

f2 = new Field("bookname", "英雄儿女", Field.Store.YES, Field.Index.TOKENIZED);

f3 = new Field("publishdate", "2002-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc5.add(f1);

doc5.add(f2);

doc5.add(f3);

Document doc6 = new Document();

f1 = new Field("bookNumber", "0000006", Field.Store.YES, Field.Index.UN_TOKENIZED);

f2 = new Field("bookname", "白毛女", Field.Store.YES, Field.Index.TOKENIZED);

f3 = new Field("publishdate", "1985-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc6.add(f1);

doc6.add(f2);

doc6.add(f3);

Document doc7 = new Document();

f1 = new Field("bookNumber", "0000007", Field.Store.YES, Field.Index.UN_TOKENIZED);

f2 = new Field("bookname", "我的兄弟和女儿", Field.Store.YES, Field.Index.TOKENIZED);

f3 = new Field("publishdate", "1978-01-01", Field.Store.YES, Field.Index.UN_TOKENIZED);

doc7.add(f1);

doc7.add(f2);

doc7.add(f3);

//将书信息加入索引

writer.addDocument(doc1);

writer.addDocument(doc2);

writer.addDocument(doc3);

writer.addDocument(doc4);

writer.addDocument(doc5);

writer.addDocument(doc6);

writer.addDocument(doc7);

writer.close();

//构建一个查询

IndexSearcher searcher = new IndexSearcher(INDEX_STORE_PATH);

Term begin = new Term("publishdate", "1950-01-01");

Term end = new Term("publishdate", "2002-01-01");

RangeQuery rq = new RangeQuery(begin, end, false);

//构建两个SortField

Sort sort = new Sort();

//按照publishdate排序，降序

SortField sf1 = new SortField("publishdate", SortField.STRING, true);

//按bookNumber排序，升序

SortField sf2 = new SortField("bookname", SortField.INT, false);

//先按照publishdate排，在按照bookNumber排

sort.setSort(new SortField[]{sf1, sf2});

Hits hits = searcher.search(rq, sort);

for(int i = 0; i < hits.length(); i++){

Document doc = hits.doc(i);

System.out.print("书名：");

System.out.println(doc.get("bookname"));

System.out.print("得分 :");

System.out.println(hits.score(i));

System.out.print("内部ID :");

System.out.println(hits.id(i));

System.out.print("书号 : ");

System.out.println(doc.get("bookNumber"));

System.out.print("发行日期 : ");

System.out.println(doc.get("publishdate"));

System.out.println("===========================");

}

}catch(IOException e){

e.printStackTrace();

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

SortFieldTest sft = new SortFieldTest("E:\\Lucene项目\\索引文件");

}

}

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