sync/syncable/syncable_columns.h

   1 // Copyright (c) 2012 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 SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_
   6 #define SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_
   7
   8 #include "sync/syncable/entry_kernel.h"
   9 #include "sync/syncable/syncable_changes_version.h"
  10
  11 namespace syncer {
  12 namespace syncable {
  13
  14 struct ColumnSpec {
  15   const char* name;
  16   const char* spec;
  17 };
  18
  19 // Must be in exact same order as fields in entry_kernel.h.
  20 static const ColumnSpec g_metas_columns[] = {
  21   //////////////////////////////////////
  22   // int64s
  23   {"metahandle", "bigint primary key ON CONFLICT FAIL"},
  24   {"base_version", "bigint default " CHANGES_VERSION_STRING},
  25   {"server_version", "bigint default 0"},
  26   // This is the item ID that we store for the embedding application.
  27   {"local_external_id", "bigint default 0"},
  28   {"transaction_version", "bigint default 0"},
  29   // These timestamps are kept in the same format as that of the
  30   // protocol (ms since Unix epoch).
  31   {"mtime", "bigint default 0"},
  32   {"server_mtime", "bigint default 0"},
  33   {"ctime", "bigint default 0"},
  34   {"server_ctime", "bigint default 0"},
  35   //////////////////////////////////////
  36   // Ids
  37   {"id", "varchar(255) default \"r\""},
  38   {"parent_id", "varchar(255) default \"r\""},
  39   {"server_parent_id", "varchar(255) default \"r\""},
  40   //////////////////////////////////////
  41   // bits
  42   {"is_unsynced", "bit default 0"},
  43   {"is_unapplied_update", "bit default 0"},
  44   {"is_del", "bit default 0"},
  45   {"is_dir", "bit default 0"},
  46   {"server_is_dir", "bit default 0"},
  47   {"server_is_del", "bit default 0"},
  48   //////////////////////////////////////
  49   // Strings
  50   {"non_unique_name", "varchar"},
  51   {"server_non_unique_name", "varchar(255)"},
  52   {"unique_server_tag", "varchar"},
  53   {"unique_client_tag", "varchar"},
  54   {"unique_bookmark_tag", "varchar"},
  55   //////////////////////////////////////
  56   // Blobs (serialized protos).
  57   {"specifics", "blob"},
  58   {"server_specifics", "blob"},
  59   {"base_server_specifics", "blob"},
  60   //////////////////////////////////////
  61   // Blobs (positions).
  62   {"server_unique_position", "blob"},
  63   {"unique_position", "blob"},
  64   //////////////////////////////////////
  65   // AttachmentMetadata is a proto that contains all the metadata associated
  66   // with an entry's attachments.  Each entry has only one AttachmentMetadata
  67   // proto.  We store a single proto per entry (as opposed to one for each
  68   // attachment) because it simplifies the database schema and implementation of
  69   // DirectoryBackingStore.
  70   {"attachment_metadata", "blob"},
  71   {"server_attachment_metadata", "blob"}
  72 };
  73
  74 // At least enforce that there are equal number of column names and fields.
  75 static_assert(arraysize(g_metas_columns) >= FIELD_COUNT, "missing column name");
  76 static_assert(arraysize(g_metas_columns) <= FIELD_COUNT, "extra column names");
  77
  78 static inline const char* ColumnName(int field) {
  79   DCHECK(field < BEGIN_TEMPS);
  80   return g_metas_columns[field].name;
  81 }
  82
  83 }  // namespace syncable
  84 }  // namespace syncer
  85
  86 #endif  // SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_