cn.gongler.util.db

类 DbUtil

java.lang.Object

cn.gongler.util.db.DbUtil

public class DbUtil
extends Object

2013.01.18

作者:

gongler

嵌套类概要

嵌套类

限定符和类型	类和说明
static interface	DbUtil.RowHandler

方法概要

限定符和类型	方法和说明
static boolean	Execute(Connection conn, String sql, Object... args)
static void	ExecuteQuery(Connection conn, String query, DbUtil.RowHandler hander)
static void	ExecuteQuery(Connection conn, String query, DbUtil.RowHandler hander, Object... args)
static boolean	ExecuteSimpleCall(Connection conn, String sql, Object... args) 调用无OUT参数、无返回值的存储过程
static int	ExecuteUpdate(Connection conn, PreparedStatement smt, Object... args)
static int	ExecuteUpdate(Connection conn, String sql, Object... args)
static <S extends PreparedStatement> S	PreparedStatementWithArgs(S smt, Object... args)
static void	Rollback(Connection conn)
static <T,R> R	Stream(Connection conn, ExceptionFunction<ResultSet,T> t, ExceptionFunction<java.util.stream.Stream<T>,R> mapper, String query, Object... args)
static <T> java.util.stream.Stream<T>	Stream(Connection conn, ExceptionFunction<ResultSet,T> t, String query, Object... args) try (Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@222.223.9.162:21521:tsgjgps1", "ts", "tsgprs1")) { System.out.println("" + conn); long count = Stream(conn, r -> r.getString("pack_note"), "select * from ext_pack_send_queue where rownum《?"
static <T> java.util.stream.Stream<T>	Stream(ResultSet rs, ExceptionFunction<ResultSet,T> t)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

Rollback

public static void Rollback(Connection conn)

ExecuteUpdate

public static int ExecuteUpdate(Connection conn,
                                String sql,
                                Object... args)

ExecuteUpdate

public static int ExecuteUpdate(Connection conn,
                                PreparedStatement smt,
                                Object... args)

Execute

public static boolean Execute(Connection conn,
                              String sql,
                              Object... args)

ExecuteSimpleCall

public static boolean ExecuteSimpleCall(Connection conn,
                                        String sql,
                                        Object... args)

调用无OUT参数、无返回值的存储过程

参数:

conn - 连接

sql - 查询语句

args - 参数

返回:

成功与否

ExecuteQuery

public static void ExecuteQuery(Connection conn,
                                String query,
                                DbUtil.RowHandler hander)

ExecuteQuery

public static void ExecuteQuery(Connection conn,
                                String query,
                                DbUtil.RowHandler hander,
                                Object... args)

PreparedStatementWithArgs

public static <S extends PreparedStatement> S PreparedStatementWithArgs(S smt,
                                                                        Object... args)
                                                                 throws SQLException

抛出:

SQLException

Stream

public static <T> java.util.stream.Stream<T> Stream(ResultSet rs,
                                                    ExceptionFunction<ResultSet,T> t)

Stream

public static <T,R> R Stream(Connection conn,
                             ExceptionFunction<ResultSet,T> t,
                             ExceptionFunction<java.util.stream.Stream<T>,R> mapper,
                             String query,
                             Object... args)

Stream

public static <T> java.util.stream.Stream<T> Stream(Connection conn,
                                                    ExceptionFunction<ResultSet,T> t,
                                                    String query,
                                                    Object... args)

 try (Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@222.223.9.162:21521:tsgjgps1", "ts", "tsgprs1")) {
 System.out.println("" + conn);
 long count = Stream(conn, r -> r.getString("pack_note"), "select * from ext_pack_send_queue where rownum《?", 10).limit(100).peek(System.out::println).sorted().count();
 System.out.println("count=" + count);
 }
 

类型参数:

T - T

参数:

conn - 连接

t - 处理

query - 查询语句

args - 参数

返回:

返回结果