oracle.cabo.ui.collection
Class FlaggedAttributeMap

java.lang.Object
  |
  +--oracle.cabo.ui.collection.ArrayAttributeMap
        |
        +--oracle.cabo.ui.collection.FlaggedAttributeMap

All Implemented Interfaces:

AttributeMap

public final class FlaggedAttributeMap

extends ArrayAttributeMap

AttributeMap that stores a bitflag indicating the presence of an indexed AttributeKey in the AttributeMap. The use of the bitflags makes determining that no value for an indexed AttributeKey exists extremely fast. As gets for indexed AttributeKeys that do not exist in the AttributeMap make up the vast majority of gets on AttributeMaps used as storage for UINodes, using a FlaggedAttributeMap is a huge improvement over ArrayAttributeMap for performance. In fact, given the small size overhead of maintaining the flags, the FlaggedAttributeMap is the best general purpose AttributeMap to use for storing the attributes of UINodes.

See Also:

IndexedAttributeMap

Constructor Summary

FlaggedAttributeMap()

FlaggedAttributeMap(int size)

FlaggedAttributeMap(int size, int increment)

Method Summary

java.lang.Object	getAttribute(RenderingContext context, AttributeKey key) Returns the value in the AttributeMap specified by the key.
protected void	putAttribute(AttributeKey key, java.lang.Object value)
protected void	removeAttribute(AttributeKey key)

Methods inherited from class oracle.cabo.ui.collection.ArrayAttributeMap

attributeKeys, clone, setAttribute, size, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FlaggedAttributeMap

public FlaggedAttributeMap()

FlaggedAttributeMap

public FlaggedAttributeMap(int size)

FlaggedAttributeMap

public FlaggedAttributeMap(int size,
                           int increment)

Method Detail

getAttribute

public java.lang.Object getAttribute(RenderingContext context,
                                     AttributeKey key)

Description copied from interface: AttributeMap

Returns the value in the AttributeMap specified by the key.

Overrides:

getAttribute in class ArrayAttributeMap

putAttribute

protected void putAttribute(AttributeKey key,
                            java.lang.Object value)

Overrides:

putAttribute in class ArrayAttributeMap

removeAttribute

protected void removeAttribute(AttributeKey key)

Overrides:

removeAttribute in class ArrayAttributeMap