oracle.cabo.ui.data.provider
Class FixedDataProvider

java.lang.Object
  |
  +--oracle.cabo.ui.data.provider.FixedDataProvider

All Implemented Interfaces:

DataProvider

public class FixedDataProvider

extends java.lang.Object

implements DataProvider

This DataProvider wraps a single DataObject. It can work one of two ways:

1. Return the DataObject only for a specific namespace and name. This is the safest option.
2. Always return the DataObject. This is more dangerous. When using FixedDataProvider in this way, clients must be very careful to wrap it in another provider that will check the namespace and name - TableDataProvider is especially useful.

See Also:

TableDataProvider

Constructor Summary

FixedDataProvider(DataObject data)
Creates a FixedDataProvider.

FixedDataProvider(java.lang.String namespace, java.lang.String name, DataObject data)
Creates a FixedDataProvider.

Method Summary

void	cleanup(RenderingContext context) RenderingContext implementations must call cleanup() once after the last callto getDataObject().
DataObject	getDataObject(RenderingContext cntxt, java.lang.String namespace, java.lang.String name) Returns the data object if the namespace and name are an exact match.
void	init(RenderingContext context) RenderingContext implementations must call init() once before calling getDataObject().

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedDataProvider

public FixedDataProvider(DataObject data)

Creates a FixedDataProvider.

Parameters:

data - the data object instance

FixedDataProvider

public FixedDataProvider(java.lang.String namespace,
                         java.lang.String name,
                         DataObject data)

Creates a FixedDataProvider.

Parameters:

namespace - the namespace for the data object

name - the name of the data object

data - the data object instance

Method Detail

getDataObject

public DataObject getDataObject(RenderingContext cntxt,
                                java.lang.String namespace,
                                java.lang.String name)

Returns the data object if the namespace and name are an exact match.

Specified by:

getDataObject in interface DataProvider

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

Parameters:

context - the current rendering context

namespace - the namespace of the requested DataObject

name - the name of the requested DataObject

Returns:

the DataObject for the specified namespace and name, or null if no such dataObject exists.

init

public void init(RenderingContext context)

RenderingContext implementations must call init() once before calling getDataObject(). In general, they should try to call it as early as possible.

Specified by:

init in interface DataProvider

cleanup

public void cleanup(RenderingContext context)

RenderingContext implementations must call cleanup() once after the last callto getDataObject().

Specified by:

cleanup in interface DataProvider