components/invalidation/object_id_invalidation_map.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_INVALIDATION_OBJECT_ID_INVALIDATION_MAP_H_
   6 #define COMPONENTS_INVALIDATION_OBJECT_ID_INVALIDATION_MAP_H_
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "components/invalidation/invalidation.h"
  12 #include "components/invalidation/invalidation_export.h"
  13 #include "components/invalidation/invalidation_util.h"
  14 #include "components/invalidation/single_object_invalidation_set.h"
  15
  16 namespace syncer {
  17
  18 // A set of notifications with some helper methods to organize them by object ID
  19 // and version number.
  20 class INVALIDATION_EXPORT ObjectIdInvalidationMap {
  21   public:
  22    // Creates an invalidation map that includes an 'unknown version'
  23    // invalidation for each specified ID in |ids|.
  24    static ObjectIdInvalidationMap InvalidateAll(const ObjectIdSet& ids);
  25
  26    ObjectIdInvalidationMap();
  27    ~ObjectIdInvalidationMap();
  28
  29    // Returns set of ObjectIds for which at least one invalidation is present.
  30    ObjectIdSet GetObjectIds() const;
  31
  32    // Returns true if this map contains no invalidations.
  33    bool Empty() const;
  34
  35    // Returns true if both maps contain the same set of invalidations.
  36    bool operator==(const ObjectIdInvalidationMap& other) const;
  37
  38    // Inserts a new invalidation into this map.
  39    void Insert(const Invalidation& invalidation);
  40
  41    // Returns a new map containing the subset of invaliations from this map
  42    // whose IDs were in the specified |ids| set.
  43    ObjectIdInvalidationMap GetSubsetWithObjectIds(const ObjectIdSet& ids) const;
  44
  45    // Returns the subset of invalidations with IDs matching |id|.
  46    const SingleObjectInvalidationSet& ForObject(
  47        invalidation::ObjectId id) const;
  48
  49    // Returns the contents of this map in a single vector.
  50    void GetAllInvalidations(std::vector<syncer::Invalidation>* out) const;
  51
  52    // Call Acknowledge() on all contained Invalidations.
  53    void AcknowledgeAll() const;
  54
  55    // Serialize this map to a value.
  56    scoped_ptr<base::ListValue> ToValue() const;
  57
  58    // Deserialize the value into a map and use it to re-initialize this object.
  59    bool ResetFromValue(const base::ListValue& value);
  60
  61    // Prints the contentes of this map as a human-readable string.
  62    std::string ToString() const;
  63
  64   private:
  65    typedef std::map<invalidation::ObjectId,
  66                     SingleObjectInvalidationSet,
  67                     ObjectIdLessThan> IdToListMap;
  68
  69    ObjectIdInvalidationMap(const IdToListMap& map);
  70
  71    IdToListMap map_;
  72 };
  73
  74 }  // namespace syncer
  75
  76 #endif  // COMPONENTS_INVALIDATION_OBJECT_ID_INVALIDATION_MAP_H_