Extract protobuf database into a new 'leveldb_proto' component

components/dom_distiller/core/dom_distiller_store.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_STORE_H_
 #define COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_STORE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "components/dom_distiller/core/article_entry.h"
-#include "components/dom_distiller/core/dom_distiller_database.h"
 #include "components/dom_distiller/core/dom_distiller_model.h"
 #include "components/dom_distiller/core/dom_distiller_observer.h"
+#include "components/leveldb_proto/core/proto_database.h"
 #include "sync/api/sync_change.h"
 #include "sync/api/sync_data.h"
 #include "sync/api/sync_error.h"
 #include "sync/api/sync_error_factory.h"
 #include "sync/api/sync_merge_result.h"
 #include "sync/api/syncable_service.h"
 #include "url/gurl.h"
 
 namespace base {
 class FilePath;
@@ skipping 41 matching lines @@
 // (changes_applied) and what is missing--i.e. entries missing for a full merge,
 // conflict resolution for normal changes-- (changes_missing).
 // 3. send a message (possibly handled asynchronously) containing
 // changes_missing to the source of the change.
 // 4. send messages (possibly handled asynchronously) containing changes_applied
 // to the other (i.e. non-source) two models.
 // TODO(cjhopman): Support deleting entries.
 class DomDistillerStore : public syncer::SyncableService,
                           public DomDistillerStoreInterface {
  public:
+  typedef std::vector<ArticleEntry> EntryVector;
+
   // Creates storage using the given database for local storage. Initializes the
   // database with |database_dir|.
-  DomDistillerStore(scoped_ptr<DomDistillerDatabaseInterface> database,
-                    const base::FilePath& database_dir);
+  DomDistillerStore(
+      scoped_ptr<leveldb_proto::ProtoDatabase<ArticleEntry> > database,
+      const base::FilePath& database_dir);
 
   // Creates storage using the given database for local storage. Initializes the
   // database with |database_dir|.  Also initializes the internal model to
   // |initial_model|.
-  DomDistillerStore(scoped_ptr<DomDistillerDatabaseInterface> database,
-                    const std::vector<ArticleEntry>& initial_data,
-                    const base::FilePath& database_dir);
+  DomDistillerStore(
+      scoped_ptr<leveldb_proto::ProtoDatabase<ArticleEntry> > database,
+      const std::vector<ArticleEntry>& initial_data,
+      const base::FilePath& database_dir);
 
   virtual ~DomDistillerStore();
 
   // DomDistillerStoreInterface implementation.
   virtual syncer::SyncableService* GetSyncableService() OVERRIDE;
   virtual bool AddEntry(const ArticleEntry& entry) OVERRIDE;
   virtual bool UpdateEntry(const ArticleEntry& entry) OVERRIDE;
   virtual bool RemoveEntry(const ArticleEntry& entry) OVERRIDE;
   virtual bool GetEntryById(const std::string& entry_id,
                             ArticleEntry* entry) OVERRIDE;
   virtual bool GetEntryByUrl(const GURL& url, ArticleEntry* entry) OVERRIDE;
   virtual std::vector<ArticleEntry> GetEntries() const OVERRIDE;
   virtual void AddObserver(DomDistillerObserver* observer) OVERRIDE;
   virtual void RemoveObserver(DomDistillerObserver* observer) OVERRIDE;
 
   // syncer::SyncableService implementation.
   virtual syncer::SyncMergeResult MergeDataAndStartSyncing(
-      syncer::ModelType type,
-      const syncer::SyncDataList& initial_sync_data,
+      syncer::ModelType type, const syncer::SyncDataList& initial_sync_data,
       scoped_ptr<syncer::SyncChangeProcessor> sync_processor,
       scoped_ptr<syncer::SyncErrorFactory> error_handler) OVERRIDE;
   virtual void StopSyncing(syncer::ModelType type) OVERRIDE;
-  virtual syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const
-      OVERRIDE;
+  virtual syncer::SyncDataList GetAllSyncData(
+      syncer::ModelType type) const OVERRIDE;
   virtual syncer::SyncError ProcessSyncChanges(
       const tracked_objects::Location& from_here,
       const syncer::SyncChangeList& change_list) OVERRIDE;
+
  private:
   void OnDatabaseInit(bool success);
   void OnDatabaseLoad(bool success, scoped_ptr<EntryVector> entries);
   void OnDatabaseSave(bool success);
 
   syncer::SyncMergeResult MergeDataWithModel(
-      const syncer::SyncDataList& data,
-      syncer::SyncChangeList* changes_applied,
+      const syncer::SyncDataList& data, syncer::SyncChangeList* changes_applied,
       syncer::SyncChangeList* changes_missing);
 
   // Convert a SyncDataList to a SyncChangeList of add or update changes based
   // on the state of the in-memory model. Also calculate the entries missing
   // from the SyncDataList.
   void CalculateChangesForMerge(const syncer::SyncDataList& data,
                                 syncer::SyncChangeList* changes_to_apply,
                                 syncer::SyncChangeList* changes_missing);
 
   bool ApplyChangesToSync(const tracked_objects::Location& from_here,
                           const syncer::SyncChangeList& change_list);
   bool ApplyChangesToDatabase(const syncer::SyncChangeList& change_list);
 
   // Applies the changes to |model_|. If the model returns an error, disables
   // syncing and database changes and returns false.
   void ApplyChangesToModel(const syncer::SyncChangeList& change_list,
                            syncer::SyncChangeList* changes_applied,
                            syncer::SyncChangeList* changes_missing);
 
   void NotifyObservers(const syncer::SyncChangeList& changes);
 
   scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
   scoped_ptr<syncer::SyncErrorFactory> error_factory_;
-  scoped_ptr<DomDistillerDatabaseInterface> database_;
+  scoped_ptr<leveldb_proto::ProtoDatabase<ArticleEntry> > database_;
   bool database_loaded_;
   ObserverList<DomDistillerObserver> observers_;
 
   DomDistillerModel model_;
 
   base::WeakPtrFactory<DomDistillerStore> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DomDistillerStore);
 };
 
 }  // namespace dom_distiller
 
 #endif  // COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_STORE_H_