* Copyright 2011, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef ATTRIBUTE_INDEX_H
#define ATTRIBUTE_INDEX_H
#include "Index.h"
#include "NodeListener.h"
class AttributeIndexer;
struct AttributeIndexTreeKey;
struct AttributeIndexTreeValue;
class AttributeIndex : public Index, private NodeListener {
public:
AttributeIndex();
virtual ~AttributeIndex();
status_t Init(Volume* volume, const char* name,
uint32 type, size_t keyLength);
virtual int32 CountEntries() const;
private:
virtual void NodeAdded(Node* node);
virtual void NodeRemoved(Node* node);
virtual void NodeChanged(Node* node, uint32 statFields,
const OldNodeAttributes& oldAttributes);
protected:
virtual AbstractIndexIterator* InternalGetIterator();
virtual AbstractIndexIterator* InternalFind(const void* key,
size_t length);
private:
typedef AttributeIndexTreeKey TreeKey;
typedef AttributeIndexTreeValue TreeValue;
struct TreeDefinition;
struct NodeTree;
struct IteratorPolicy;
class Iterator;
class IteratorList;
friend class Iterator;
friend struct IteratorPolicy;
friend class AttributeIndexer;
private:
void _AddIteratorToUpdate(Iterator* iterator);
private:
NodeTree* fNodes;
IteratorList* fIteratorsToUpdate;
AttributeIndexer* fIndexer;
};
#endif
