com.sas.commands.relational
Class ScrollPreviousRowPageCommand

com.sas.commands.relational.ScrollPreviousRowPageCommand

All Implemented Interfaces:

CommandSupportedInterface, DynamicAttributeCommandInterface, BaseEntityInterface, BaseEntityValueInterface, EntityKeyInterface, com.sas.lang.StringDataInterface, com.sas.PublicClonable, com.sas.util.Command, com.sas.util.SimpleCommand, java.lang.Cloneable, java.rmi.Remote

public class ScrollPreviousRowPageCommand

This class implements scrolling back a page of rows command.

Field Summary

Fields inherited from interface com.sas.commands.DynamicAttributeCommandInterface

COMMAND_NAME_PREFIX

Constructor Summary

ScrollPreviousRowPageCommand()
Default constructor

ScrollPreviousRowPageCommand(java.lang.String name)
Constructor that accepts a command name

ScrollPreviousRowPageCommand(java.lang.String name, java.lang.String actionClass)
Constructor that accepts a command name and an action class type

Method Summary

boolean	isSupported(ActionSupportFilter actionFilter) Returns a boolean indicating whether the command is supported for the area specified on the ActionSupportFilter argument.
void	scrollExecute(java.lang.Object out) This method is called by the execute() method on the BaseScrollCommand.

Methods inherited from class com.sas.commands.relational.BaseScrollCommand

execute, getModel, setModel

Methods inherited from class com.sas.commands.BaseCommand

getLocale, getName, getNextCommandName, getText, isExecutable, isUndoable, setLocale, setName, setText, undo

Methods inherited from class com.sas.entities.BaseEntity

clone, containsAttributeNamed, equals, equals, getAttribute, getAttribute, getAttributeCount, getAttributes, getEntityKey, getPropertyDescriptors, getStringAttribute, listAttributeNames, removeAllAttributes, removeAttribute, reset, sameEntity, setAttribute, setAttributes, setEntityKey, toString

Methods inherited from interface com.sas.entities.BaseEntityValueInterface

getAttribute, setAttribute

Methods inherited from interface com.sas.util.Command

clone

Constructor Detail

ScrollPreviousRowPageCommand

public ScrollPreviousRowPageCommand()

Default constructor

ScrollPreviousRowPageCommand

public ScrollPreviousRowPageCommand(java.lang.String name)

Constructor that accepts a command name

Parameters:

name - the name of this command

ScrollPreviousRowPageCommand

public ScrollPreviousRowPageCommand(java.lang.String name,
                                    java.lang.String actionClass)

Constructor that accepts a command name and an action class type

Parameters:

name - the name of this command

actionClass - the name of the action class for this command

Method Detail

scrollExecute

public void scrollExecute(java.lang.Object out)

This method is called by the execute() method on the BaseScrollCommand. This method performs the scroll operation.

Overrides:

scrollExecute in class BaseScrollCommand

Parameters:

out - The output stream to which the results of this command should be written.

isSupported

public boolean isSupported(ActionSupportFilter actionFilter)

Returns a boolean indicating whether the command is supported for the area specified on the ActionSupportFilter argument. The implementation on this class always return true. Extensions of this class should override this method if there are conditions where the command may not be available or supported.

Specified by:

isSupported in interface CommandSupportedInterface

Specified by:

isSupported in class BaseScrollCommand

Parameters:

actionFilter - The object that describes the current area.

Returns:

a boolean indicating whether the command is supported.

See Also:

BaseAction.setReturnStatus(int)