BooleanQuery布尔搜索

顾名思义就是布尔型查询。

package query;

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.BooleanClause;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.TermQuery;


public class BooleanQuery {
public static void main(String[] agrs){
IndexWriter writer = new IndexWriter(INDEX_STORE_PATH, new StandardAnalyzer(), true);
writer.setUseCompoundFile(false);


//创建8个文档
Document doc1 = new Document();
Document doc2 = new Document();
Document doc3 = new Document();
Document doc4 = new Document();
Document doc5 = new Document();
Document doc6 = new Document();
Document doc7 = new Document();
Document doc8 = new Document();

Field f1 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f2 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f3 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f4 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f5 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f6 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f7 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);
Field f8 = new Field("bookname", "钢铁是怎样炼成的",Field.Store.YES, Field.Index.TOKENIZED);

doc1.add(f1);
doc1.add(f2);
doc1.add(f3);
doc1.add(f4);
doc1.add(f5);
doc1.add(f6);
doc1.add(f7);
doc1.add(f8);
writer.addDocument(doc1);
writer.addDocument(doc2);
writer.addDocument(doc3);
writer.addDocument(doc4);
writer.addDocument(doc5);
writer.addDocument(doc6);
writer.addDocument(doc7);
writer.addDocument(doc8);

IndexSearcher searcher = new IndexSearcher(INDEX_STORE_PATH);

//创建两个词表
Term t1 = new Term("bookname", "女");
Term t2 = new Term("bookname", "狗");

//创建两个TermQuery
TermQuery q1 = new TermQuery(t1);
TermQuery q2 = new TermQuery(t2);

//构建BooleanQuery对象
BooleanQuery query = new BooleanQuery();

//将两个TermQuery加入到BooleanQuery的子句中去，且其关系均为必须满足
query.add(q1, BooleanClause.Occur.MUST);
query.add(q2, BooleanClause.Occur.MUST);

//打印查询结果
Hits hits = searcher.search(query);

for(int i = 0; i < hits.length(); i++){
System.out.println(hits.doc(i));
}


}


}