09 Lucene索引库查询 - query子类查询

@Test
public void testMatchAllDocsQuery() throws Exception {
  IndexSearcher indexSearcher = getIndexSearcher();
  //创建查询条件
  Query query = new MatchAllDocsQuery();
  //执行查询
  printResult(query, indexSearcher);
}

//使用Termquery查询
@Test
public void testTermQuery() throws Exception {
  IndexSearcher indexSearcher = getIndexSearcher();
  //创建查询对象
  Query query = new TermQuery(new Term("content", "lucene"));
  //执行查询
  TopDocs topDocs = indexSearcher.search(query, 10);
  //共查询到的document个数
  System.out.println("查询结果总数量：" + topDocs.totalHits);
  //遍历查询结果
  for (ScoreDoc scoreDoc : topDocs.scoreDocs) {
    Document document = indexSearcher.doc(scoreDoc.doc);
    System.out.println(document.get("filename"));
    //System.out.println(document.get("content"));
    System.out.println(document.get("path"));
    System.out.println(document.get("size"));
  }
  //关闭indexreader
  indexSearcher.getIndexReader().close();
}

//数值范围查询
@Test
public void testNumericRangeQuery() throws Exception {
  IndexSearcher indexSearcher = getIndexSearcher();
  //创建查询
  //参数：
  //1.域名
  //2.最小值
  //3.最大值
  //4.是否包含最小值
  //5.是否包含最大值
  Query query = NumericRangeQuery.newLongRange("size", 1l, 1000l, true, true);
  //执行查询
  printResult(query, indexSearcher);
}

//组合条件查询
@Test
public void testBooleanQuery() throws Exception {
  IndexSearcher indexSearcher = getIndexSearcher();
  //创建一个布尔查询对象
  BooleanQuery query = new BooleanQuery();
  //创建第一个查询条件
  Query query1 = new TermQuery(new Term("filename", "apache"));
  Query query2 = new TermQuery(new Term("content", "apache"));
  //组合查询条件
  query.add(query1, Occur.MUST);
  query.add(query2, Occur.MUST);
  //执行查询
  printResult(query, indexSearcher);
}