Migrate the IndexedDB backend from Blink to Chromium

content/browser/indexed_db/indexed_db_database_impl.h

+// Copyright (c) 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_IMPL_H_
+#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_IMPL_H_
+
+#include <list>
+#include <map>
+
+#include "content/browser/indexed_db/indexed_db_callbacks_wrapper.h"
+#include "content/browser/indexed_db/indexed_db_metadata.h"
+#include "content/browser/indexed_db/indexed_db_transaction_coordinator.h"
+#include "content/browser/indexed_db/list_set.h"
+
+namespace content {
+
+class IndexedDBBackingStore;
+class IndexedDBDatabase;
+class IndexedDBFactoryImpl;
+class IndexedDBTransaction;
+
+class IndexedDBDatabaseImpl : public IndexedDBDatabase {
+ public:
+  static scoped_refptr<IndexedDBDatabaseImpl> Create(
+      const string16& name,
+      IndexedDBBackingStore* database,
+      IndexedDBFactoryImpl*,
+      const string16& unique_identifier);
+  scoped_refptr<IndexedDBBackingStore> BackingStore() const;
+
+  static const int64_t InvalidId = 0;
+  int64_t id() const { return metadata_.id; }
+  void AddObjectStore(const IndexedDBObjectStoreMetadata&,
+                      int64_t new_max_object_store_id);
+  void RemoveObjectStore(int64_t object_store_id);
+  void AddIndex(int64_t object_store_id,
+                const IndexedDBIndexMetadata&,
+                int64_t new_max_index_id);
+  void RemoveIndex(int64_t object_store_id, int64_t index_id);
+
+  void OpenConnection(scoped_refptr<IndexedDBCallbacksWrapper>,
+                      scoped_refptr<IndexedDBDatabaseCallbacksWrapper>,
+                      int64_t transaction_id,
+                      int64_t version);
+  void DeleteDatabase(scoped_refptr<IndexedDBCallbacksWrapper>);
+  const IndexedDBDatabaseMetadata& metadata() const { return metadata_; }
+
+  // IndexedDBDatabase
+  virtual void CreateObjectStore(int64_t transaction_id,
+                                 int64_t object_store_id,
+                                 const string16& name,
+                                 const IndexedDBKeyPath&,
+                                 bool auto_increment) OVERRIDE;
+  virtual void DeleteObjectStore(int64_t transaction_id,
+                                 int64_t object_store_id) OVERRIDE;
+  virtual void CreateTransaction(
+      int64_t transaction_id,
+      scoped_refptr<IndexedDBDatabaseCallbacksWrapper>,
+      const std::vector<int64_t>& object_store_ids,
+      unsigned short mode) OVERRIDE;
+  virtual void Close(scoped_refptr<IndexedDBDatabaseCallbacksWrapper>) OVERRIDE;
+
+  virtual void Commit(int64_t transaction_id) OVERRIDE;
+  virtual void Abort(int64_t transaction_id) OVERRIDE;
+  virtual void Abort(int64_t transaction_id,
+                     scoped_refptr<IndexedDBDatabaseError>) OVERRIDE;
+
+  virtual void CreateIndex(int64_t transaction_id,
+                           int64_t object_store_id,
+                           int64_t index_id,
+                           const string16& name,
+                           const IndexedDBKeyPath&,
+                           bool unique,
+                           bool multi_entry) OVERRIDE;
+  virtual void DeleteIndex(int64_t transaction_id,
+                           int64_t object_store_id,
+                           int64_t index_id) OVERRIDE;
+
+  IndexedDBTransactionCoordinator& transaction_coordinator() {
+    return transaction_coordinator_;
+  }
+
+  void TransactionStarted(IndexedDBTransaction*);
+  void TransactionFinished(IndexedDBTransaction*);
+  void TransactionFinishedAndCompleteFired(IndexedDBTransaction*);
+  void TransactionFinishedAndAbortFired(IndexedDBTransaction*);
+
+  virtual void Get(int64_t transaction_id,
+                   int64_t object_store_id,
+                   int64_t index_id,
+                   scoped_ptr<IndexedDBKeyRange>,
+                   bool key_only,
+                   scoped_refptr<IndexedDBCallbacksWrapper>) OVERRIDE;
+  virtual void Put(int64_t transaction_id,
+                   int64_t object_store_id,
+                   std::vector<char>* value,
+                   scoped_ptr<IndexedDBKey>,
+                   PutMode,
+                   scoped_refptr<IndexedDBCallbacksWrapper>,
+                   const std::vector<int64_t>& index_ids,
+                   const std::vector<IndexKeys>&) OVERRIDE;
+  virtual void SetIndexKeys(int64_t transaction_id,
+                            int64_t object_store_id,
+                            scoped_ptr<IndexedDBKey> primary_key,
+                            const std::vector<int64_t>& index_ids,
+                            const std::vector<IndexKeys>&) OVERRIDE;
+  virtual void SetIndexesReady(int64_t transaction_id,
+                               int64_t object_store_id,
+                               const std::vector<int64_t>& index_ids) OVERRIDE;
+  virtual void OpenCursor(int64_t transaction_id,
+                          int64_t object_store_id,
+                          int64_t index_id,
+                          scoped_ptr<IndexedDBKeyRange>,
+                          IndexedDB::CursorDirection,
+                          bool key_only,
+                          TaskType,
+                          scoped_refptr<IndexedDBCallbacksWrapper>) OVERRIDE;
+  virtual void Count(int64_t transaction_id,
+                     int64_t object_store_id,
+                     int64_t index_id,
+                     scoped_ptr<IndexedDBKeyRange>,
+                     scoped_refptr<IndexedDBCallbacksWrapper>) OVERRIDE;
+  virtual void DeleteRange(int64_t transaction_id,
+                           int64_t object_store_id,
+                           scoped_ptr<IndexedDBKeyRange>,
+                           scoped_refptr<IndexedDBCallbacksWrapper>) OVERRIDE;
+  virtual void Clear(int64_t transaction_id,
+                     int64_t object_store_id,
+                     scoped_refptr<IndexedDBCallbacksWrapper>) OVERRIDE;
+
+ private:
+  IndexedDBDatabaseImpl(const string16& name,
+                        IndexedDBBackingStore* database,
+                        IndexedDBFactoryImpl*,
+                        const string16& unique_identifier);
+  virtual ~IndexedDBDatabaseImpl();
+
+  bool IsOpenConnectionBlocked() const;
+  bool OpenInternal();
+  void RunVersionChangeTransaction(
+      scoped_refptr<IndexedDBCallbacksWrapper>,
+      scoped_refptr<IndexedDBDatabaseCallbacksWrapper>,
+      int64_t transaction_id,
+      int64_t requested_version);
+  void RunVersionChangeTransactionFinal(
+      scoped_refptr<IndexedDBCallbacksWrapper>,
+      scoped_refptr<IndexedDBDatabaseCallbacksWrapper>,
+      int64_t transaction_id,
+      int64_t requested_version);
+  size_t ConnectionCount() const;
+  void ProcessPendingCalls();
+
+  bool IsDeleteDatabaseBlocked() const;
+  void DeleteDatabaseFinal(scoped_refptr<IndexedDBCallbacksWrapper>);
+
+  class VersionChangeOperation;
+
+  // When a "versionchange" transaction aborts, these restore the back-end
+  // object hierarchy.
+  class VersionChangeAbortOperation;
+
+  scoped_refptr<IndexedDBBackingStore> backing_store_;
+  IndexedDBDatabaseMetadata metadata_;
+
+  string16 identifier_;
+  // This might not need to be a scoped_refptr since the factory's lifetime is
+  // that of the page group, but it's better to be conservitive than sorry.
+  scoped_refptr<IndexedDBFactoryImpl> factory_;
+
+  IndexedDBTransactionCoordinator transaction_coordinator_;
+  IndexedDBTransaction* running_version_change_transaction_;
+
+  typedef std::map<int64_t, IndexedDBTransaction*> TransactionMap;
+  TransactionMap transactions_;
+
+  class PendingOpenCall;
+  typedef std::list<PendingOpenCall*> PendingOpenCallList;
+  PendingOpenCallList pending_open_calls_;
+  scoped_ptr<PendingOpenCall> pending_run_version_change_transaction_call_;
+  scoped_ptr<PendingOpenCall> pending_second_half_open_;
+
+  class PendingDeleteCall;
+  typedef std::list<PendingDeleteCall*> PendingDeleteCallList;
+  PendingDeleteCallList pending_delete_calls_;
+
+  typedef list_set<scoped_refptr<IndexedDBDatabaseCallbacksWrapper> >
+      DatabaseCallbacksSet;
+  DatabaseCallbacksSet database_callbacks_set_;
+
+  bool closing_connection_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_IMPL_H_