/// <summary>constructor</summary>
/// <param name="owner">parent of index</param>
/// <param name="getKey">delegate to get key from object</param>
/// <param name="loadItem">delegate to load object if it is not found in index</param>
public Index(LruItemCache <TItem> owner, GetKeyFunc <TKey> getKey, LoadItemFunc <TKey> loadItem)
{
_owner = owner;
_index = new Dictionary <TKey, WeakReference>(_owner._capacity * 2);
_getKey = getKey;
_loadItem = loadItem;
RebuildIndex();
}
/// <summary>constructor</summary>
/// <param name="owner">parent of index</param>
/// <param name="getKey">delegate to get key from object</param>
/// <param name="loadItem">delegate to load object if it is not found in index</param>
public Index(LRUCache <ItemType> owner, GetKeyFunc <KeyType> getKey, LoadItemFunc <KeyType> loadItem)
{
Debug.Assert(owner != null, "owner argument required");
Debug.Assert(getKey != null, "GetKey delegate required");
_owner = owner;
_index = new Dictionary <KeyType, WeakReference>(_owner._capacity * 2);
_getKey = getKey;
_loadItem = loadItem;
RebuildIndex();
}
/// <summary>Add a new index to the cache</summary>
/// <typeparam name="KeyType">the type of the key value</typeparam>
/// <param name="indexName">the name to be associated with this list</param>
/// <param name="getKey">delegate to get key from object</param>
/// <param name="loadItem">delegate to load object if it is not found in index</param>
/// <returns>the newly created index</returns>
public IIndex <KeyType> AddIndex <KeyType>(String indexName, GetKeyFunc <KeyType> getKey, LoadItemFunc <KeyType> loadItem)
{
var index = new Index <KeyType>(this, getKey, loadItem);
_indexList[indexName] = index;
return(index);
}