src/add-ons/kernel/file_systems/packagefs/indices/NameIndex.h

   1 /*
   2  * Copyright 2011, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef NAME_INDEX_H
   6 #define NAME_INDEX_H
   7
   8
   9 #include "Index.h"
  10 #include "NodeListener.h"
  11
  12
  13 template<typename Policy> class GenericIndexIterator;
  14
  15
  16 class NameIndex : public Index, private NodeListener {
  17 public:
  18                                                                 NameIndex();
  19         virtual                                         ~NameIndex();
  20
  21                         status_t                        Init(Volume* volume);
  22
  23         virtual int32                           CountEntries() const;
  24
  25 private:
  26         virtual void                            NodeAdded(Node* node);
  27         virtual void                            NodeRemoved(Node* node);
  28         virtual void                            NodeChanged(Node* node, uint32 statFields,
  29                                                                         const OldNodeAttributes& oldAttributes);
  30
  31 protected:
  32         virtual AbstractIndexIterator* InternalGetIterator();
  33         virtual AbstractIndexIterator* InternalFind(const void* key,
  34                                                                         size_t length);
  35
  36 private:
  37                         class EntryTree;
  38                         struct IteratorPolicy;
  39                         struct Iterator;
  40
  41                         friend struct IteratorPolicy;
  42
  43                         void                            _UpdateLiveQueries(Node* entry,
  44                                                                         const char* oldName, const char* newName);
  45
  46 private:
  47                         EntryTree*                      fEntries;
  48 };
  49
  50
  51 #endif  // NAME_INDEX_H