storage/mozStorageRow.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozStorageRow_h
   8 #define mozStorageRow_h
   9
  10 #include "mozIStorageRow.h"
  11 #include "nsCOMArray.h"
  12 #include "nsDataHashtable.h"
  13 #include "mozilla/Attributes.h"
  14 class nsIVariant;
  15 struct sqlite3_stmt;
  16
  17 namespace mozilla {
  18 namespace storage {
  19
  20 class Row final : public mozIStorageRow {
  21  public:
  22   NS_DECL_THREADSAFE_ISUPPORTS
  23   NS_DECL_MOZISTORAGEROW
  24   NS_DECL_MOZISTORAGEVALUEARRAY
  25
  26   Row() : mNumCols(0) {}
  27
  28   /**
  29    * Initializes the object with the given statement.  Copies the values from
  30    * the statement.
  31    *
  32    * @param aStatement
  33    *        The sqlite statement to pull results from.
  34    */
  35   nsresult initialize(sqlite3_stmt* aStatement);
  36
  37  private:
  38   ~Row() {}
  39
  40   /**
  41    * The number of columns in this tuple.
  42    */
  43   uint32_t mNumCols;
  44
  45   /**
  46    * Stores the data in the tuple.
  47    */
  48   nsCOMArray<nsIVariant> mData;
  49
  50   /**
  51    * Maps a given name to a column index.
  52    */
  53   nsDataHashtable<nsCStringHashKey, uint32_t> mNameHashtable;
  54 };
  55
  56 }  // namespace storage
  57 }  // namespace mozilla
  58
  59 #endif  // mozStorageRow_h