org.pinus4j.datalayer

Class SQLBuilder

java.lang.Object

org.pinus4j.datalayer.SQLBuilder

public class SQLBuilder
extends Object

SQL工具类.

Author:

duanbn

Field Summary

Fields

Modifier and Type	Field and Description
private static Map<String,String>	_selectCountCache select count语句缓存.
private static IEntityMetaManager	entityMetaManager
static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
SQLBuilder()

Method Summary

Methods

Modifier and Type	Method and Description
private static Object	_getRsValue(ResultSet rs, Field f, int i)
static SQL	buildDeleteByPks(Class<?> clazz, int tableIndex, List<EntityPK> pks) 拼装sql.
static SQL	buildSelectByPks(EntityPK[] pks, List<DefaultQueryImpl.OrderBy> orders, Class<?> clazz, int tableIndex) 拼装select sql.
static <T> SQL	buildSelectByQuery(Class<T> clazz, int tableIndex, IQuery<T> query) 拼装sql.
static PreparedStatement	buildSelectBySql(Connection conn, SQL sql, int tableIndex) 拼装sql.
static PreparedStatement	buildSelectBySqlGlobal(Connection conn, SQL sql)
static <T> SQL	buildSelectCountByQuery(Class<T> clazz, int tableIndex, IQuery<T> query)
static String	buildSelectCountGlobalSql(Class<?> clazz)
static String	buildSelectCountSql(Class<?> clazz, int tableIndex) 拼装sql.
static <T> SQL	buildSelectPkByQuery(Class<T> clazz, int tableIndex, IQuery<T> query) 拼装sql.
static <T> List<T>	createResultObject(Class<T> clazz, ResultSet rs) 给定数据库查询结果集创建数据对性.
static List<Map<String,Object>>	createResultObject(ResultSet rs) 给定数据库查询结果集创建数据对性.
static <T> Map<EntityPK,T>	createResultObjectAsMap(Class<T> clazz, ResultSet rs) 将数据转换为数据对象
static void	debugSQL(String sql)
static void	debugSQLParam(List<Object> params) 打印SQL日志.
static Object	formatValue(Object value) 格式化数据库值.
static SQL	getInsert(Object entity, int tableIndex) 根据指定对象创建一个SQL语句.
static SQL	getUpdate(Object entity, int tableIndex) 获取update PreparedStatement.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

_selectCountCache

private static final Map<String,String> _selectCountCache

select count语句缓存.

entityMetaManager

private static IEntityMetaManager entityMetaManager

Constructor Detail

SQLBuilder

public SQLBuilder()

Method Detail

buildSelectPkByQuery

public static <T> SQL buildSelectPkByQuery(Class<T> clazz,
                           int tableIndex,
                           IQuery<T> query)

拼装sql. SELECT pkName FROM tableName {IQuery.getSql()}

Returns:

sql语句.

buildSelectByQuery

public static <T> SQL buildSelectByQuery(Class<T> clazz,
                         int tableIndex,
                         IQuery<T> query)

拼装sql. SELECT {fields} FROM tableName {IQuery.getSql()}

Returns:

sql语句.

buildSelectCountByQuery

public static <T> SQL buildSelectCountByQuery(Class<T> clazz,
                              int tableIndex,
                              IQuery<T> query)

buildSelectBySqlGlobal

public static PreparedStatement buildSelectBySqlGlobal(Connection conn,
                                       SQL sql)
                                                throws SQLException

Throws:

SQLException

buildSelectBySql

public static PreparedStatement buildSelectBySql(Connection conn,
                                 SQL sql,
                                 int tableIndex)
                                          throws SQLException

拼装sql. 根据SQL对象生成查询语句, 此sql语句不能包含limit

Parameters:

conn - 数据库连接

sql - 查询对象

tableIndex - 分表下标

Returns:

PreparedStatement

Throws:

SQLException

buildSelectCountGlobalSql

public static String buildSelectCountGlobalSql(Class<?> clazz)

buildSelectCountSql

public static String buildSelectCountSql(Class<?> clazz,
                         int tableIndex)

拼装sql. SELECT count(*) FROM tableName

Parameters:

clazz - 数据对象class

tableIndex - 分表下标

Returns:

SELECT count(*) FROM tableName

buildSelectByPks

public static SQL buildSelectByPks(EntityPK[] pks,
                   List<DefaultQueryImpl.OrderBy> orders,
                   Class<?> clazz,
                   int tableIndex)
                            throws SQLException

拼装select sql. SELECT field, field FROM tableName WHERE pk in (?, ?, ?)

Parameters:

clazz - 数据对象

tableIndex - 表下标

pks - 主键

Returns:

sql语句

Throws:

SQLException

buildDeleteByPks

public static SQL buildDeleteByPks(Class<?> clazz,
                   int tableIndex,
                   List<EntityPK> pks)
                            throws SQLException

拼装sql. DELETE FROM tableName WHERE pk in (...)

Returns:

DELETE语句

Throws:

SQLException

getUpdate

public static SQL getUpdate(Object entity,
            int tableIndex)
                     throws SQLException

获取update PreparedStatement.

Parameters:

conn - 数据库连接

entities - 数据对象

tableIndex - 分表下标

Returns:

PreparedStatement

Throws:

SQLException

getInsert

public static SQL getInsert(Object entity,
            int tableIndex)
                     throws SQLException

根据指定对象创建一个SQL语句.

Parameters:

conn - 数据库连接引用

entity - 数据对象

tableIndex - 分表下标

Returns:

SQL语句

Throws:

SQLException - 操作失败

createResultObject

public static List<Map<String,Object>> createResultObject(ResultSet rs)
                                                   throws SQLException

给定数据库查询结果集创建数据对性.

Parameters:

rs - 数据库查询结果集

Returns:

数据对象列表

Throws:

SQLException

createResultObject

public static <T> List<T> createResultObject(Class<T> clazz,
                             ResultSet rs)
                                  throws SQLException

给定数据库查询结果集创建数据对性.

Parameters:

clazz - 数据对象class

rs - 数据库查询结果集

Returns:

数据对象列表

Throws:

SQLException

createResultObjectAsMap

public static <T> Map<EntityPK,T> createResultObjectAsMap(Class<T> clazz,
                                          ResultSet rs)
                                               throws SQLException

将数据转换为数据对象

Parameters:

clazz - 数据对象

rs - 结果集

Returns:

{pkValue, Object}

Throws:

SQLException

_getRsValue

private static Object _getRsValue(ResultSet rs,
                 Field f,
                 int i)
                           throws SQLException

Throws:

SQLException

formatValue

public static Object formatValue(Object value)

格式化数据库值. 过滤特殊字符

debugSQL

public static void debugSQL(String sql)

debugSQLParam

public static void debugSQLParam(List<Object> params)

打印SQL日志.