ScrollableModel Interface
- public interface ScrollableModel
extends Serializable
This file contains an interface for any scrollable model
It helps manage large returned value by returning only
a set of cached value objects (if used properly), reducing
the traffic and the memory usage with this simple interface.
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All Known Implementing Classes
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DefaultScrollableModel
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All Superinterfaces
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Serializable
public int |
-
getCount ()
- gets the total number of elements managed by
the Scrollable Model.
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public Class |
-
getModelClass ()
- All objects managed by the scrollable model
are of the same class.
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public int |
-
getNbPages ()
- Gets the total number of pages over the scrollable model
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public Object [] |
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getPage (int pageIndex)
- Gets a page worth of Objects, given a page index.
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public int |
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getPageSize ()
- gets the page size for an instance of a scrollable model
i.e. '10' means 10 value objects are kept in one page.
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public Object |
-
getValueAt (int valueIndex)
- Gets the value (hopefully a value object)
based on the index the value
|
public void |
-
setValueAt (Serializable value, int valueIndex)
- Sets the value of an element based on its index
in the list of values managed by the scrollable model.
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getCount() Method
public int getCount()
gets the total number of elements managed by
the Scrollable Model.
Returns
- the count of all elements.
getModelClass() Method
public Class
getModelClass()
All objects managed by the scrollable model
are of the same class. This method retrieves
that class
Returns
- the Class of all objects managed by the scrollable model.
getNbPages() Method
public int getNbPages()
Gets the total number of pages over the scrollable model
Returns
- the number of pages
getPage(int) Method
public Object
[] getPage(int pageIndex)
Gets a page worth of Objects, given a page index.
Parameters
-
pageIndex
- the index in the list of pages
Returns
- an array of objects for that page.
getPageSize() Method
public int getPageSize()
gets the page size for an instance of a scrollable model
i.e. '10' means 10 value objects are kept in one page.
Returns
- the size of all pages
getValueAt(int) Method
public Object
getValueAt(int valueIndex)
Gets the value (hopefully a value object)
based on the index the value
Parameters
-
valueIndex
- the index for the value to retrieve
Returns
- the corresponding value as an Object
setValueAt(Serializable, int) Method
public void setValueAt(Serializable
value,
int valueIndex)
Sets the value of an element based on its index
in the list of values managed by the scrollable model.
Parameters
-
value
- the 'value object' at a location in the list
-
valueIndex
- the location of the value object in the list