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mozStorageBindingParamsArray.cpp (2241B)

      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 #include "mozStorageBindingParamsArray.h"
      8 #include "mozStorageBindingParams.h"
      9 #include "StorageBaseStatementInternal.h"
     10 
     11 namespace mozilla {
     12 namespace storage {
     13 
     14 ////////////////////////////////////////////////////////////////////////////////
     15 //// BindingParamsArray
     16 
     17 BindingParamsArray::BindingParamsArray(
     18    StorageBaseStatementInternal* aOwningStatement)
     19    : mOwningStatement(aOwningStatement), mLocked(false) {}
     20 
     21 void BindingParamsArray::lock() {
     22  NS_ASSERTION(mLocked == false, "Array has already been locked!");
     23  mLocked = true;
     24 
     25  // We also no longer need to hold a reference to our statement since it owns
     26  // us.
     27  mOwningStatement = nullptr;
     28 }
     29 
     30 const StorageBaseStatementInternal* BindingParamsArray::getOwner() const {
     31  return mOwningStatement;
     32 }
     33 
     34 NS_IMPL_ISUPPORTS(BindingParamsArray, mozIStorageBindingParamsArray)
     35 
     36 ///////////////////////////////////////////////////////////////////////////////
     37 //// mozIStorageBindingParamsArray
     38 
     39 NS_IMETHODIMP
     40 BindingParamsArray::NewBindingParams(mozIStorageBindingParams** _params) {
     41  NS_ENSURE_FALSE(mLocked, NS_ERROR_UNEXPECTED);
     42 
     43  nsCOMPtr<mozIStorageBindingParams> params(
     44      mOwningStatement->newBindingParams(this));
     45  NS_ENSURE_TRUE(params, NS_ERROR_UNEXPECTED);
     46 
     47  params.forget(_params);
     48  return NS_OK;
     49 }
     50 
     51 NS_IMETHODIMP
     52 BindingParamsArray::AddParams(mozIStorageBindingParams* aParameters) {
     53  NS_ENSURE_FALSE(mLocked, NS_ERROR_UNEXPECTED);
     54 
     55  BindingParams* params = static_cast<BindingParams*>(aParameters);
     56 
     57  // Check to make sure that this set of parameters was created with us.
     58  if (params->getOwner() != this) return NS_ERROR_UNEXPECTED;
     59 
     60  mArray.AppendElement(params);
     61 
     62  // Lock the parameters only after we've successfully added them.
     63  params->lock();
     64 
     65  return NS_OK;
     66 }
     67 
     68 NS_IMETHODIMP
     69 BindingParamsArray::GetLength(uint32_t* _length) {
     70  *_length = length();
     71  return NS_OK;
     72 }
     73 
     74 }  // namespace storage
     75 }  // namespace mozilla