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
该接口为Bee框架使用的底层接口,不建议用户直接使用
The interface of operating database with SQL statement directly
The SQL string in this interface is the SQL statement that DB can recognize
BeeSql is the underlying interface used by Bee framework, and it is not recommended for users to use it directly

从以下版本开始:

1.0

作者:

Kingstar Create on 2013-6-30 22:05:36

方法概要

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.
long	insertAndReturnId(String sql)
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.
<T> List<T>	moreTableSelect(String sql, T entity) 多表查询的方法.根据sql查询数据,数据类型与entity类型一致 According to SQL query more table data, data type is consistent with entity type.
List<String[]>	select(String sql) 查询并将每一行结果转成String数组.Select and transform every record to string array.
<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 According to SQL query data, data type is consistent with entity type.
String	selectFun(String sql) 用函数查询结果.Select result with function.
String	selectJson(String sql) 查询结果,并以json格式返回.Select and return json format result.
List<Map<String,Object>>	selectMapList(String sql) 查询并将每一行结果转成Map.Select and transform every record to Map.
<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
According to SQL query data, data type is consistent with entity type.

参数:

sql - SQL select statement

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:

可包含多个实体(多条记录)的list. list can contain more than one entity.

moreTableSelect

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

多表查询的方法.根据sql查询数据,数据类型与entity类型一致
According to SQL query more table data, data type is consistent with entity type.

参数:

sql - SQL select statement

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:

可包含多个实体(多条记录)的list. list can contain more than one entity.

从以下版本开始:

1.7

selectSomeField

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

查询部分字段.Select some field.

参数:

sql - SQL select statement

entity -

返回:

entity的list,这些entity只有查询的部分字段会设值.list entity which just has some field.

selectFun

String selectFun(String sql)

用函数查询结果.Select result with function. SQL function: max,min,avg,sum,count.

参数:

sql - SQL select statement

返回:

函数统计的值.如果统计的结果集为空,除了count返回0,其它都返回空字符.

select

List<String[]> select(String sql)

查询并将每一行结果转成String数组.Select and transform every record to string array.

参数:

sql - SQL select statement

返回:

List,每个元素是一行记录转换成的string数组. List, every element is string array(transform from record).

selectMapList

List<Map<String,Object>> selectMapList(String sql)

查询并将每一行结果转成Map.Select and transform every record to Map.

参数:

sql - SQL select statement

返回:

List,每个元素是一行记录转换成的Map. List, every element is a Map(transform from record).

从以下版本开始:

1.9

selectJson

String selectJson(String sql)

查询结果,并以json格式返回.Select and return json format result.

参数:

sql - SQL select statement

返回:

json格式结果集.json format result .

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:

成功操作的记录行数. the number of affected successfully records.

insertAndReturnId

long insertAndReturnId(String sql)

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:

受影响的行数 Affected rows.

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 - 一个批次提交的命令数目 the size of commands in a batch

返回:

受影响的行数 Affected rows.