sf.database.jdbc.sql

Class ResultSetIteration<T>

java.lang.Object

sf.database.jdbc.sql.ResultSetIteration<T>

Type Parameters:

T -

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<T>, Iterator<T>

public class ResultSetIteration<T>
extends Object
implements Iterator<T>, Iterable<T>, Closeable

实现结果集的迭代接口.

Author:

sxf

Field Summary

Fields

Modifier and Type	Field and Description
protected RowMapper<T>	rm
protected int	rowNum 处理的记录位置(第几条记录)：可以只针对某一条记录做特殊处理,从0开始
protected ResultSet	rs
protected ResultSetMetaData	rsmd

Constructor Summary

Constructors

Constructor and Description
ResultSetIteration()
ResultSetIteration(ResultSet rs, RowMapper<T> rm)

Method Summary

Modifier and Type	Method and Description
void	close()
protected T	fetchNext()
RowMapper<T>	getRm()
ResultSet	getRs()
boolean	hasNext() Iterator接口
static <T> ResultSetIteration<T>	iteration(ResultSet rs, RowMapper<T> mapper) Generates an Iterable, suitable for use in for-each loops.
Iterator<T>	iterator() Iterable接口
T	next() Iterator接口
void	remove()
void	reset() 重置
protected void	rethrow(SQLException e)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

rs

protected ResultSet rs

rsmd

protected ResultSetMetaData rsmd

rm

protected RowMapper<T> rm

rowNum

protected int rowNum

处理的记录位置(第几条记录)：可以只针对某一条记录做特殊处理,从0开始

Constructor Detail

ResultSetIteration

public ResultSetIteration()

ResultSetIteration

public ResultSetIteration(ResultSet rs,
                          RowMapper<T> rm)

Method Detail

reset

public void reset()

重置

fetchNext

protected T fetchNext()

hasNext

public boolean hasNext()

Iterator接口

Specified by:

hasNext in interface Iterator<T>

Returns:

next

public T next()

Iterator接口

Specified by:

next in interface Iterator<T>

Returns:

remove

public void remove()

Specified by:

remove in interface Iterator<T>

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

iterator

public Iterator<T> iterator()

Iterable接口

Specified by:

iterator in interface Iterable<T>

Returns:

rethrow

protected void rethrow(SQLException e)

getRs

public ResultSet getRs()

getRm

public RowMapper<T> getRm()

iteration

public static <T> ResultSetIteration<T> iteration(ResultSet rs,
                                                  RowMapper<T> mapper)

Generates an Iterable, suitable for use in for-each loops.

Parameters:

rs - Wrap this ResultSet in an Iterator.

Returns:

an Iterable, suitable for use in for-each loops.