org.progeeks.meta.util
Class CachingMetaObjectListAdapter

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList
          org.progeeks.meta.util.MetaObjectListAdapter
              org.progeeks.meta.util.CachingMetaObjectListAdapter

All Implemented Interfaces:

java.lang.Iterable, java.util.Collection, java.util.List

public class CachingMetaObjectListAdapter
extends MetaObjectListAdapter

Specialization of the MetaObjectListAdapter that knows it can keep track of and manage its own list of unwrapped objects. MetaObjectListAdapter is just a view and can therefore only operate lazily in case the list changes underneath it. There are cases where we start with the list of wrapped objects and then create an unwrapped list for storage. In these cases, it is safer to keep track of everything. There is still the possibility that the underlying MetaObject implementation will attempt to monkey with the list directly but keeping our own reference to the list saves us from some other problems... namely that we don't often have all of the information necessary to fully recreate a meta-object from its internal value. Therefore, we should try to keep as much info around as possible. A solution to the self-management issues would be to keep an observable list internally as the unwrapped list. That way if a meta-object impl messes with it directly then we'll know. Something for later. FIXME Note: this really only extends MetaObjectListAdapter for some polymorphism issues in AbstractMetaObject. Could probably be handled a better way.

Version:

$Revision: 1.2 $

Author:

Paul Speed

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

CachingMetaObjectListAdapter(MetaKit metaKit, MetaClass mClass, java.util.List wrappers)

Method Summary

void	add(int index, java.lang.Object value)
java.lang.Object	get(int index)
int	indexOf(java.lang.Object o)
java.lang.Object	remove(int index)
java.lang.Object	set(int index, java.lang.Object value)

Methods inherited from class org.progeeks.meta.util.MetaObjectListAdapter

fromMetaObject, getList, setList, size, toMetaObject

Methods inherited from class java.util.AbstractList

add, addAll, clear, equals, hashCode, iterator, lastIndexOf, listIterator, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Constructor Detail

CachingMetaObjectListAdapter

public CachingMetaObjectListAdapter(MetaKit metaKit,
                                    MetaClass mClass,
                                    java.util.List wrappers)

Method Detail

set

public java.lang.Object set(int index,
                            java.lang.Object value)

Specified by:

set in interface java.util.List

Overrides:

set in class MetaObjectListAdapter

add

public void add(int index,
                java.lang.Object value)

Specified by:

add in interface java.util.List

Overrides:

add in class MetaObjectListAdapter

get

public java.lang.Object get(int index)

Specified by:

get in interface java.util.List

Overrides:

get in class MetaObjectListAdapter

indexOf

public int indexOf(java.lang.Object o)

Specified by:

indexOf in interface java.util.List

Overrides:

indexOf in class MetaObjectListAdapter

remove

public java.lang.Object remove(int index)

Specified by:

remove in interface java.util.List

Overrides:

remove in class MetaObjectListAdapter