[Sync] Move //sync to //components/sync.

components/sync/syncable/syncable_columns.h

+// Copyright (c) 2012 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_SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_
+#define COMPONENTS_SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_
+
+#include "base/macros.h"
+#include "components/sync/syncable/entry_kernel.h"
+#include "components/sync/syncable/syncable_changes_version.h"
+
+namespace syncer {
+namespace syncable {
+
+struct ColumnSpec {
+  const char* name;
+  const char* spec;
+};
+
+// Must be in exact same order as fields in entry_kernel.h.
+static const ColumnSpec g_metas_columns[] = {
+    //////////////////////////////////////
+    // int64s
+    {"metahandle", "bigint primary key ON CONFLICT FAIL"},
+    {"base_version", "bigint default " CHANGES_VERSION_STRING},
+    {"server_version", "bigint default 0"},
+    // This is the item ID that we store for the embedding application.
+    {"local_external_id", "bigint default 0"},
+    {"transaction_version", "bigint default 0"},
+    // These timestamps are kept in the same format as that of the
+    // protocol (ms since Unix epoch).
+    {"mtime", "bigint default 0"},
+    {"server_mtime", "bigint default 0"},
+    {"ctime", "bigint default 0"},
+    {"server_ctime", "bigint default 0"},
+    //////////////////////////////////////
+    // Ids
+    {"id", "varchar(255) default \"r\""},
+    {"parent_id", "varchar(255) default \"r\""},
+    {"server_parent_id", "varchar(255) default \"r\""},
+    //////////////////////////////////////
+    // bits
+    {"is_unsynced", "bit default 0"},
+    {"is_unapplied_update", "bit default 0"},
+    {"is_del", "bit default 0"},
+    {"is_dir", "bit default 0"},
+    {"server_is_dir", "bit default 0"},
+    {"server_is_del", "bit default 0"},
+    //////////////////////////////////////
+    // Strings
+    {"non_unique_name", "varchar"},
+    {"server_non_unique_name", "varchar(255)"},
+    {"unique_server_tag", "varchar"},
+    {"unique_client_tag", "varchar"},
+    {"unique_bookmark_tag", "varchar"},
+    //////////////////////////////////////
+    // Blobs (serialized protos).
+    {"specifics", "blob"},
+    {"server_specifics", "blob"},
+    {"base_server_specifics", "blob"},
+    //////////////////////////////////////
+    // Blobs (positions).
+    {"server_unique_position", "blob"},
+    {"unique_position", "blob"},
+    //////////////////////////////////////
+    // AttachmentMetadata is a proto that contains all the metadata associated
+    // with an entry's attachments.  Each entry has only one AttachmentMetadata
+    // proto.  We store a single proto per entry (as opposed to one for each
+    // attachment) because it simplifies the database schema and implementation
+    // of
+    // DirectoryBackingStore.
+    {"attachment_metadata", "blob"},
+    {"server_attachment_metadata", "blob"}};
+
+// At least enforce that there are equal number of column names and fields.
+static_assert(arraysize(g_metas_columns) >= FIELD_COUNT, "missing column name");
+static_assert(arraysize(g_metas_columns) <= FIELD_COUNT, "extra column names");
+
+static inline const char* ColumnName(int field) {
+  DCHECK(field < BEGIN_TEMPS);
+  return g_metas_columns[field].name;
+}
+
+}  // namespace syncable
+}  // namespace syncer
+
+#endif  // COMPONENTS_SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_