org.shept.persistence.provider
Class AbstractScrollingListProvider

java.lang.Object
  org.shept.persistence.provider.AbstractScrollingListProvider

All Implemented Interfaces:

ScrollingListProvider

Direct Known Subclasses:

AbstractHibernateListProvider

public abstract class AbstractScrollingListProvider
extends Object
implements ScrollingListProvider

Version:

$$Id: AbstractScrollingListProvider.java 34 2010-08-20 16:46:49Z aha $$

Author:

Andi

Field Summary

protected org.springframework.dao.support.DaoSupport	dao
protected boolean	eol
protected FilterDefinition	filterDefinition
protected int	loaded
protected int	loadSize
protected org.apache.commons.logging.Log	logger Logger that is available to subclasses
protected org.springframework.beans.support.SortDefinition	sortDefinition

Constructor Summary

AbstractScrollingListProvider()

Method Summary

org.springframework.dao.support.DaoSupport	getDao()
FilterDefinition	getFilterDefinition()
int	getLoadSize()
org.springframework.beans.support.SortDefinition	getSortDefinition()
protected void	incrementLoadSizeAfterFetch(int numberOfRows)
boolean	isEol()
abstract List<?>	loadListFirst() Read the first chunk of elements from the underlying datasource.
abstract List<?>	loadListNext() Read a subsequent portion of elements from the underlying datasource
void	setDao(org.springframework.dao.support.DaoSupport dao) Set the data access object which depends on the persistence layer in use
void	setFilterDefinition(FilterDefinition filterProvider)
void	setLoadSize(int loadSize) set the load size which will be used for paging
void	setSortDefinition(org.springframework.beans.support.SortDefinition sortDefinition)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Logger that is available to subclasses

loadSize

protected int loadSize

loaded

protected int loaded

eol

protected boolean eol

filterDefinition

protected FilterDefinition filterDefinition

sortDefinition

protected org.springframework.beans.support.SortDefinition sortDefinition

dao

protected org.springframework.dao.support.DaoSupport dao

Constructor Detail

AbstractScrollingListProvider

public AbstractScrollingListProvider()

Method Detail

getDao

public org.springframework.dao.support.DaoSupport getDao()

Specified by:

getDao in interface ScrollingListProvider

Returns:

the data access object which depends on the persistence layer in use

setDao

public void setDao(org.springframework.dao.support.DaoSupport dao)

Description copied from interface: ScrollingListProvider

Set the data access object which depends on the persistence layer in use

Specified by:

setDao in interface ScrollingListProvider

Parameters:

dao - the dao to set

getLoadSize

public int getLoadSize()

Specified by:

getLoadSize in interface ScrollingListProvider

Returns:

Number of records to read from the database initially and subsequently (if paging is supported)

isEol

public boolean isEol()

Specified by:

isEol in interface ScrollingListProvider

Returns:

true if end-of-lines is reached (no further results available)

loadListFirst

public abstract List<?> loadListFirst()

Description copied from interface: ScrollingListProvider

Read the first chunk of elements from the underlying datasource.

Specified by:

loadListFirst in interface ScrollingListProvider

Returns:

the resulting list of elements

loadListNext

public abstract List<?> loadListNext()

Description copied from interface: ScrollingListProvider

Read a subsequent portion of elements from the underlying datasource

Specified by:

loadListNext in interface ScrollingListProvider

Returns:

the resulting list of elements

setLoadSize

public void setLoadSize(int loadSize)

Description copied from interface: ScrollingListProvider

set the load size which will be used for paging

Specified by:

setLoadSize in interface ScrollingListProvider

getFilterDefinition

public FilterDefinition getFilterDefinition()

Specified by:

getFilterDefinition in interface ScrollingListProvider

Returns:

the filterProvider

setFilterDefinition

public void setFilterDefinition(FilterDefinition filterProvider)

Specified by:

setFilterDefinition in interface ScrollingListProvider

Parameters:

filterProvider - the filterProvider to set

getSortDefinition

public org.springframework.beans.support.SortDefinition getSortDefinition()

Specified by:

getSortDefinition in interface ScrollingListProvider

Returns:

the sortDefinition

setSortDefinition

public void setSortDefinition(org.springframework.beans.support.SortDefinition sortDefinition)

Specified by:

setSortDefinition in interface ScrollingListProvider

Parameters:

sortDefinition - the sortDefinition to set

incrementLoadSizeAfterFetch

protected void incrementLoadSizeAfterFetch(int numberOfRows)

Parameters:

-