oracle.cabo.ui.data.servlet
Class PageContextDataObject

java.lang.Object
  |
  +--oracle.cabo.ui.data.servlet.PageContextDataObject

All Implemented Interfaces:

DataObject, MutableDataObject

public class PageContextDataObject

extends java.lang.Object

implements MutableDataObject

Turns the attributes of a PageContext object into a DataObject, so they can be used as generic data objects for any interface that takes DataObjects. The attributes are searched for using the findAttribute() function, so they'll be looked for using the scoping rules of that function.

Constructor Summary

PageContextDataObject()
Creates a PageContextDataObject that will dynamically locate a PageContext object off of the RenderingContext.

PageContextDataObject(javax.servlet.jsp.PageContext pageContext)
Creates a PageContextDataObject attached to a fixed PageContext.

Method Summary

java.lang.Object	selectValue(RenderingContext context, java.lang.Object select) Given a select string, returns the value matching that selection.
void	updateValue(RenderingContext context, java.lang.Object select, java.lang.Object value) Given a select string, updates the value matching that selection.

Methods inherited from class java.lang.Object

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

Constructor Detail

PageContextDataObject

public PageContextDataObject()

Creates a PageContextDataObject that will dynamically locate a PageContext object off of the RenderingContext.

PageContextDataObject

public PageContextDataObject(javax.servlet.jsp.PageContext pageContext)

Creates a PageContextDataObject attached to a fixed PageContext.

Method Detail

selectValue

public java.lang.Object selectValue(RenderingContext context,
                                    java.lang.Object select)

Description copied from interface: DataObject

Given a select string, returns the value matching that selection. It is legal to return null if the select key doesn't match anything.

Specified by:

selectValue in interface DataObject

Following copied from interface: oracle.cabo.ui.data.DataObject

Parameters:

context - the current rendering context

select - a select criterion, syntax as defined by the data object

updateValue

public void updateValue(RenderingContext context,
                        java.lang.Object select,
                        java.lang.Object value)

Description copied from interface: MutableDataObject

Given a select string, updates the value matching that selection.

Specified by:

updateValue in interface MutableDataObject

Following copied from interface: oracle.cabo.ui.data.MutableDataObject

Parameters:

context - the current rendering context

select - a select criterion, syntax as defined by the data object

value - the new value associated with this select criterion