org.openjdk.jmc.common.item

Class CachingAccessor<T>

java.lang.Object

org.openjdk.jmc.common.item.CachingAccessor<T>

Type Parameters:

T - the type of member values returned by this accessor

All Implemented Interfaces:

IMemberAccessor<T,IItem>

class CachingAccessor<T>
extends java.lang.Object
implements IMemberAccessor<T,IItem>

An accessor that can be used for multiple types. It keeps a cache of accessors for the types of the items that getMember(org.openjdk.jmc.common.item.IItem) is called with.

Note that this class is not thread safe.

Field Summary

Fields

Modifier and Type	Field and Description
private IAccessorFactory<T>	attribute
private java.util.Map<IType<?>,IMemberAccessor<? extends T,IItem>>	fieldsToMerge
private IMemberAccessor<? extends T,IItem>	lastField
private IType<IItem>	lastType

Constructor Summary

Constructors

Constructor and Description
CachingAccessor(IAccessorFactory<T> attribute)

Method Summary

Modifier and Type	Method and Description
T	getMember(IItem inObject) Gets a member value from a container object.

Methods inherited from class java.lang.Object

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

Field Detail

attribute

private final IAccessorFactory<T> attribute

fieldsToMerge

private final java.util.Map<IType<?>,IMemberAccessor<? extends T,IItem>> fieldsToMerge

lastType

private IType<IItem> lastType

lastField

private IMemberAccessor<? extends T,IItem> lastField

Constructor Detail

CachingAccessor

CachingAccessor(IAccessorFactory<T> attribute)

Method Detail

getMember

public T getMember(IItem inObject)

Description copied from interface: IMemberAccessor

Gets a member value from a container object.

Specified by:

getMember in interface IMemberAccessor<T,IItem>

Parameters:

inObject - Container object

Returns:

member value or null if it can't be found from the provided container