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 {
  22 public:
  23   NS_DECL_THREADSAFE_ISUPPORTS
  24   NS_DECL_MOZISTORAGEROW
  25   NS_DECL_MOZISTORAGEVALUEARRAY
  26
  27   Row() : mNumCols(0) {}
  28
  29   /**
  30    * Initializes the object with the given statement.  Copies the values from
  31    * the statement.
  32    *
  33    * @param aStatement
  34    *        The sqlite statement to pull results from.
  35    */
  36   nsresult initialize(sqlite3_stmt *aStatement);
  37
  38 private:
  39   ~Row() {}
  40
  41   /**
  42    * The number of columns in this tuple.
  43    */
  44   uint32_t mNumCols;
  45
  46   /**
  47    * Stores the data in the tuple.
  48    */
  49   nsCOMArray<nsIVariant> mData;
  50
  51   /**
  52    * Maps a given name to a column index.
  53    */
  54   nsDataHashtable<nsCStringHashKey, uint32_t> mNameHashtable;
  55 };
  56
  57 } // namespace storage
  58 } // namespace mozilla
  59
  60 #endif // mozStorageRow_h