如何在java中使用H2數據庫的全文搜索功能？

Question

任何人都可以在java程序的幫助下解釋如何使用H2嵌入式數據庫的全文搜索。

執行「SELECT * FROM FT_SEARCH_DATA（'word'，0，0）」返回選擇查詢字符串。我是否需要再次執行這個以獲得最終結果？

Answer 1

使用H2全文索引的Java程序是the unit test program。從那裏的例子：

Connection conn = ... 
    Statement stat = conn.createStatement(); 
    stat.execute("CREATE ALIAS IF NOT EXISTS FT_INIT FOR \"org.h2.fulltext.FullText.init\""); 
    stat.execute("CALL FT_INIT()"); 
    FullText.setIgnoreList(conn, "to,this"); 
    FullText.setWhitespaceChars(conn, " ,.-"); 
    stat.execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR)"); 
    stat.execute("INSERT INTO TEST VALUES(1, 'Welcome to this world, One_Word')"); 
    stat.execute("CALL FT_CREATE_INDEX('PUBLIC', 'TEST', NULL)"); 
    ResultSet rs; 
    rs = stat.executeQuery("SELECT * FROM FT_SEARCH('Welcome', 0, 0)"); 
    assertTrue(rs.next()); 
    assertEquals("QUERY", rs.getMetaData().getColumnLabel(1)); 
    assertEquals("SCORE", rs.getMetaData().getColumnLabel(2)); 
    assertEquals("\"PUBLIC\".\"TEST\" WHERE \"ID\"=1", rs.getString(1)); 
    assertEquals("1.0", rs.getString(2)); 
    rs = stat.executeQuery("SELECT * FROM FT_SEARCH_DATA('One', 0, 0)"); 
    assertFalse(rs.next()); 
    rs = stat.executeQuery("SELECT * FROM FT_SEARCH_DATA('One_Word', 0, 0)"); 
    assertTrue(rs.next()); 
    rs = stat.executeQuery("SELECT * FROM FT_SEARCH_DATA('Welcome', 0, 0)"); 
    assertTrue(rs.next()); 

還有一個SQL script example。也許你對Javadocs for the FullText class感興趣 - 這將解釋什麼FT_SEARCH_DATA/searchData返回。