org.teasoft.bee.osql

接口 BeeSql

public interface BeeSql

直接用sql语句操作数据库的接口 在该接口中的sql字符串要是DB能识别的SQL语句 The interface of operating database with SQL statement directly The SQL string in this interface is the SQL statement that DB can recognize

从以下版本开始:

1.0

作者:

Kingstar Create on 2013-6-30 下午10:05:36

方法概要

方法

限定符和类型	方法和说明
int[]	batch(String[] sqls) 提交一批命令到数据库 Submits a batch of commands to the database.
int[]	batch(String[] sqls, int batchSize) 提交一批命令到数据库 Submits a batch of commands to the database.
int	modify(String sql) 操作update,insert,delete.对应Jdbc的executeUpdate方法 operate update,insert,delete. corresponding to Jdbc executeUpdate method.
List<String[]>	select(String sql)
<T> List<T>	select(String sql, T entity) 根据sql查询数据,数据类型与entity类型一致
String	selectFun(String sql) SQL function: max,min,avg,sum,count.
String	selectJson(String sql) 返回json格式结果的查询操作
<T> List<T>	selectSomeField(String sql, T entity) 查询部分字段 select some field

方法详细资料

select

<T> List<T> select(String sql,
                 T entity)

根据sql查询数据,数据类型与entity类型一致

参数:

sql -

entity - 与表对应的实体对象,且不能为空 entity corresponding to table and can not be null.

返回:

返回的list可包含多个实体(多条记录) return list can contain more than one entity

selectSomeField

<T> List<T> selectSomeField(String sql,
                          T entity)

查询部分字段 select some field

参数:

sql - select sql string

entity -

返回:

selectFun

String selectFun(String sql)
                 throws ObjSQLException

SQL function: max,min,avg,sum,count. 如果统计的结果集为空,除了count返回0,其它都返回空字符.

参数:

sql -

返回:

抛出:

ObjSQLException

select

List<String[]> select(String sql)

参数:

sql -

返回:

eg: select field1,field2 from beanName; return list element as: field1[#Bee#]field2

selectJson

String selectJson(String sql)

返回json格式结果的查询操作

参数:

sql - SQL statement to execute

返回:

modify

int modify(String sql)

操作update,insert,delete.对应Jdbc的executeUpdate方法 operate update,insert,delete. corresponding to Jdbc executeUpdate method.

参数:

sql - SQL statement to execute

返回:

the number of successful records 返回成功操作的记录行数

batch

int[] batch(String[] sqls)

提交一批命令到数据库 Submits a batch of commands to the database.

参数:

sqls - 要执行的sql语句数组 Array of SQL statements to execute

返回:

包含批中每个命令的一个元素的更新计数所组成的数组 an array of update counts containing one element for each command in the batch. The elements of the array are ordered according to the order in which commands were added to the batch.

batch

int[] batch(String[] sqls,
          int batchSize)

提交一批命令到数据库 Submits a batch of commands to the database.

参数:

sqls - 要执行的sql语句数组 Array of SQL statements to execute

batchSize -

返回:

包含批中每个命令的一个元素的更新计数所组成的数组 an array of update counts containing one element for each command in the batch. The elements of the array are ordered according to the order in which commands were added to the batch.