oracle.cabo.ui.data.bind
Class DefaultingBoundValue

java.lang.Object
  |
  +--oracle.cabo.ui.data.bind.DefaultingBoundValue

All Implemented Interfaces:

BoundValue

Direct Known Subclasses:

DefaultingBoundValue, ToColorBoundValue, ToDateBoundValue

public class DefaultingBoundValue

extends java.lang.Object

implements BoundValue

A BoundValue implementation that wraps another and returns a provided default value in place of null.

Constructor Summary

DefaultingBoundValue(BoundValue wrapped, BoundValue defaultBoundValue)
Creates a DefaultingBoundValue.

DefaultingBoundValue(BoundValue wrapped, java.lang.Object defaultValue)
Creates a DefaultingBoundValue.

Method Summary

java.lang.Object	getValue(RenderingContext context) Called to retrieve a value based on the current rendering context.
protected java.lang.Object	getWrappedValue(RenderingContext context)

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultingBoundValue

public DefaultingBoundValue(BoundValue wrapped,
                            java.lang.Object defaultValue)

Creates a DefaultingBoundValue.

Parameters:

wrapped - the BoundValue to try first

defaultValue - the value to return if wrapped returns null

DefaultingBoundValue

public DefaultingBoundValue(BoundValue wrapped,
                            BoundValue defaultBoundValue)

Creates a DefaultingBoundValue.

Parameters:

wrapped - the BoundValue to try first

defaultBoundValue - the BoundValue to use if wrapped returns null

Method Detail

getValue

public java.lang.Object getValue(RenderingContext context)

Description copied from interface: BoundValue

Called to retrieve a value based on the current rendering context.

Specified by:

getValue in interface BoundValue

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

Parameters:

context - the rendering context

getWrappedValue

protected java.lang.Object getWrappedValue(RenderingContext context)