org.dromara.hutool.db.handler

Class NumberHandler

java.lang.Object

org.dromara.hutool.db.handler.NumberHandler

All Implemented Interfaces:

Serializable, RsHandler<Number>

public class NumberHandler
extends Object
implements RsHandler<Number>

处理为数字结果，当查询结果为单个数字时使用此处理器（例如select count(1)）

Author:

loolly

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static NumberHandler	INSTANCE 单例

Constructor Summary

Constructors

Constructor and Description
NumberHandler()

Method Summary

Modifier and Type	Method and Description
Number	handle(ResultSet rs) 处理结果集 结果集处理后不需要关闭

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final NumberHandler INSTANCE

单例

Constructor Detail

NumberHandler

public NumberHandler()

Method Detail

handle

public Number handle(ResultSet rs)
              throws SQLException

Description copied from interface: RsHandler

处理结果集
结果集处理后不需要关闭

Specified by:

handle in interface RsHandler<Number>

Parameters:

rs - 结果集

Returns:

处理后生成的对象

Throws:

SQLException - SQL异常