online.sanen.unabo.template

类 RowExtractor2Map

java.lang.Object

online.sanen.unabo.template.RowExtractor2Map

所有已实现的接口:

RowExtractor<Map<String,Object>>

public class RowExtractor2Map
extends Object
implements RowExtractor<Map<String,Object>>

作者:

LazyToShow
Date: 2018年10月14日
Time: 下午1:18:48

构造器概要

构造器

构造器和说明
RowExtractor2Map()
RowExtractor2Map(Map<String,String> alias)

方法概要

限定符和类型	方法和说明
protected Map<String,Object>	createColumnMap(int columnCount) Create a Map instance to be used as column map.
protected String	getColumnKey(String columnName) Determine the key to use for the given column in the column Map.
protected Object	getColumnValue(ResultSet rs, int index) Retrieve a JDBC object value for the specified column.
Map<String,Object>	mapRow(ResultSet rs, int rowNum) 实现必须实现此方法来映射ResultSet中的每一行数据。

从类继承的方法 java.lang.Object

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

构造器详细资料

RowExtractor2Map

public RowExtractor2Map()

RowExtractor2Map

public RowExtractor2Map(Map<String,String> alias)

方法详细资料

mapRow

public Map<String,Object> mapRow(ResultSet rs,
                                 int rowNum)
                          throws SQLException

从接口复制的说明: RowExtractor

实现必须实现此方法来映射ResultSet中的每一行数据。这个方法不应该调用ResultSet上的next();它只应该映射当前行的值。

指定者:

mapRow 在接口中 RowExtractor<Map<String,Object>>

参数:

rs - 要映射的结果集(为当前行预初始化)

rowNum - 当前行数

返回:

the result 对象(可以是null)

抛出:

SQLException - 如果遇到获取列值的SQLException(即，不需要捕获SQLException)

createColumnMap

protected Map<String,Object> createColumnMap(int columnCount)

Create a Map instance to be used as column map.

By default, a linked case-insensitive Map will be created.

参数:

columnCount -

返回:

getColumnKey

protected String getColumnKey(String columnName)

Determine the key to use for the given column in the column Map.

参数:

columnName - the column name as returned by the ResultSet

返回:

the column key to use

另请参阅:

ResultSetMetaData.getColumnName(int)

getColumnValue

protected Object getColumnValue(ResultSet rs,
                                int index)
                         throws SQLException

Retrieve a JDBC object value for the specified column.

The default implementation uses the getObject method. Additionally, this implementation includes a "hack" to get around Oracle returning a non standard object for their TIMESTAMP datatype.

参数:

rs -

index -

返回:

抛出:

SQLException