Migrate the IndexedDB backend from Blink to Chromium

content/browser/indexed_db/indexed_db_index_writer.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_INDEX_WRITER_H_
+#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
+
+#include <map>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_vector.h"
+#include "content/browser/indexed_db/indexed_db_backing_store.h"
+#include "content/browser/indexed_db/indexed_db_database_impl.h"
+#include "content/browser/indexed_db/indexed_db_metadata.h"
+#include "content/common/indexed_db/indexed_db_key_path.h"
+
+namespace content {
+
+class IndexedDBDatabaseImpl;
+class IndexedDBTransaction;
+struct IndexedDBObjectStoreMetadata;
+
+// TODO(alecflett): this namespace is temporary until we move its contents out
+// to their own home.
+namespace IndexedDBObjectStoreImpl {
+
+class IndexWriter {
+ public:
+  explicit IndexWriter(const IndexedDBIndexMetadata& index_metadata);
+
+  IndexWriter(const IndexedDBIndexMetadata& index_metadata,
+              const IndexedDBDatabase::IndexKeys& index_keys);
+
+  bool VerifyIndexKeys(IndexedDBBackingStore* store,
+                       IndexedDBBackingStore::Transaction* transaction,
+                       int64 database_id,
+                       int64 object_store_id,
+                       int64 index_id,
+                       bool* can_add_keys,
+                       const IndexedDBKey& primary_key,
+                       string16* error_message = 0) const WARN_UNUSED_RESULT;
+
+  void WriteIndexKeys(const IndexedDBBackingStore::RecordIdentifier& record,
+                      IndexedDBBackingStore* store,
+                      IndexedDBBackingStore::Transaction* transaction,
+                      int64 database_id,
+                      int64 object_store_id) const;
+
+  ~IndexWriter();
+
+ private:
+  bool AddingKeyAllowed(IndexedDBBackingStore* store,
+                        IndexedDBBackingStore::Transaction* transaction,
+                        int64 database_id,
+                        int64 object_store_id,
+                        int64 index_id,
+                        const IndexedDBKey& index_key,
+                        const IndexedDBKey& primary_key,
+                        bool* allowed) const WARN_UNUSED_RESULT;
+
+  const IndexedDBIndexMetadata index_metadata_;
+  IndexedDBDatabase::IndexKeys index_keys_;
+};
+
+bool MakeIndexWriters(
+    scoped_refptr<IndexedDBTransaction> transaction,
+    IndexedDBBackingStore* store,
+    int64 database_id,
+    const IndexedDBObjectStoreMetadata& metadata,
+    const IndexedDBKey& primary_key,
+    bool key_was_generated,
+    const std::vector<int64>& index_ids,
+    const std::vector<IndexedDBDatabase::IndexKeys>& index_keys,
+    ScopedVector<IndexWriter>* index_writers,
+    string16* error_message,
+    bool* completed) WARN_UNUSED_RESULT;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_