org.pinus4j.datalayer.iterator

Class AbstractRecordIterator<E>

java.lang.Object

org.pinus4j.datalayer.jdbc.AbstractJdbcQuery

org.pinus4j.datalayer.iterator.AbstractRecordIterator<E>

All Implemented Interfaces:

Iterator<E>, IDataQuery, IRecordIterator<E>

Direct Known Subclasses:

GlobalRecordIterator, ShardingRecordIterator

public abstract class AbstractRecordIterator<E>
extends AbstractJdbcQuery
implements IRecordIterator<E>

抽象数据库记录迭代器.

Author:

duanbn

Field Summary

Fields

Modifier and Type	Field and Description
protected Class<E>	clazz
protected long	latestId
protected long	maxId
protected String	pkName
protected IQuery	query
protected Queue<E>	recordQ
protected int	step
static int	STEP

Fields inherited from class org.pinus4j.datalayer.jdbc.AbstractJdbcQuery

dbCluster, primaryCache, secondCache

Constructor Summary

Constructors

Constructor and Description
AbstractRecordIterator(Class<E> clazz)

Method Summary

Modifier and Type	Method and Description
abstract long	getMaxId()
int	getStep()
E	next()
List<E>	nextMore() 批量返回
void	remove()
void	setQuery(IQuery query) 设置遍历时查询的条件
void	setStep(int step) 设置批量读取记录的条数

Methods inherited from class org.pinus4j.datalayer.jdbc.AbstractJdbcQuery

getDBCluster, getPrimaryCache, getSecondCache, isCacheAvailable, isSecondCacheAvailable, selectByPksWithCache, selectByPkWithCache, selectByPkWithCache, selectByQuery, selectBySql, selectCount, selectCountWithCache, selectGlobalByPksWithCache, selectGlobalByQuery, selectGlobalBySql, selectGlobalCount, selectGlobalCountWithCache, selectGlobalPksByQuery, selectPksByQuery, setDBCluster, setPrimaryCache, setSecondCache

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.pinus4j.datalayer.IRecordIterator

getCount

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext

Field Detail

STEP

public static final int STEP

See Also:

Constant Field Values

clazz

protected Class<E> clazz

pkName

protected String pkName

query

protected IQuery query

recordQ

protected Queue<E> recordQ

step

protected int step

latestId

protected long latestId

maxId

protected long maxId

Constructor Detail

AbstractRecordIterator

public AbstractRecordIterator(Class<E> clazz)

Method Detail

next

public E next()

Specified by:

next in interface Iterator<E>

remove

public void remove()

Specified by:

remove in interface Iterator<E>

nextMore

public List<E> nextMore()

Description copied from interface: IRecordIterator

批量返回

Specified by:

nextMore in interface IRecordIterator<E>

Returns:

setQuery

public void setQuery(IQuery query)

Description copied from interface: IRecordIterator

设置遍历时查询的条件

Specified by:

setQuery in interface IRecordIterator<E>

getMaxId

public abstract long getMaxId()

getStep

public int getStep()

setStep

public void setStep(int step)

Description copied from interface: IRecordIterator

设置批量读取记录的条数

Specified by:

setStep in interface IRecordIterator<E>