com.klg.jclass.datasource
Class Store

java.lang.Object
  |
  +--com.klg.jclass.datasource.Store

All Implemented Interfaces:

Serializable, StoreModel

public class Store

extends Object

implements StoreModel, Serializable

Provides storage and retrieval for DataTableData. Maps between bookmarks and row indexes.

See Also:

Serialized Form

Field Summary

protected Vector	idxToBookmarkMap
protected Hashtable	rowCache

Constructor Summary

Store()

Method Summary

void	addRow(long bookmark, Object row) Add a row.
void	addRow(long bookmark, Object row, int ordinal) Insert a row.
void	clear() Clear all rows.
long	getBookmark(int ordinal) Return the bookmark of the row at ordinal.
int	getIndex(long bookmark) Get index.
Object	getRow(long bookmark) Given a bookmark, return the row
int	getRowCount() Return the number of rows in this store
void	removeRow(long bookmark) Remove a row.

Methods inherited from class java.lang.Object

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

Field Detail

idxToBookmarkMap

protected Vector idxToBookmarkMap

rowCache

protected Hashtable rowCache

Constructor Detail

Store

public Store()

Method Detail

getRowCount

public int getRowCount()

Return the number of rows in this store

Specified by:

getRowCount in interface StoreModel

Returns:

an int which is the number of rows in this store

getRow

public Object getRow(long bookmark)

Given a bookmark, return the row

Specified by:

getRow in interface StoreModel

Parameters:

bookmark - the long which uniquely identifies a row

Returns:

the row object for this bookmark

addRow

public void addRow(long bookmark,
                   Object row)

Add a row.

Specified by:

addRow in interface StoreModel

addRow

public void addRow(long bookmark,
                   Object row,
                   int ordinal)

Insert a row.

Specified by:

addRow in interface StoreModel

removeRow

public void removeRow(long bookmark)

Remove a row.

Specified by:

removeRow in interface StoreModel

Parameters:

bookmark - the long bookmark of the row to be removed

getIndex

public int getIndex(long bookmark)

Get index.

Specified by:

getIndex in interface StoreModel

Parameters:

bookmark - a long which uniquely identifies a row

Returns:

its ordinal position

getBookmark

public long getBookmark(int ordinal)

Return the bookmark of the row at ordinal.

Specified by:

getBookmark in interface StoreModel

Returns:

the long bookmark of the row at ordinal

clear

public void clear()

Clear all rows.

Specified by:

clear in interface StoreModel