storage/mozStorageStatementParams.cpp

   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 "nsJSUtils.h"
   8 #include "nsMemory.h"
   9 #include "nsString.h"
  10
  11 #include "jsapi.h"
  12
  13 #include "mozilla/dom/MozStorageStatementParamsBinding.h"
  14 #include "mozStoragePrivateHelpers.h"
  15
  16 namespace mozilla {
  17 namespace storage {
  18
  19 ////////////////////////////////////////////////////////////////////////////////
  20 //// StatementParams
  21
  22 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(StatementParams, mWindow)
  23
  24 NS_INTERFACE_TABLE_HEAD(StatementParams)
  25   NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
  26   NS_INTERFACE_TABLE(StatementParams, nsISupports)
  27   NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(StatementParams)
  28 NS_INTERFACE_MAP_END
  29
  30 NS_IMPL_CYCLE_COLLECTING_ADDREF(StatementParams)
  31 NS_IMPL_CYCLE_COLLECTING_RELEASE(StatementParams)
  32
  33 StatementParams::StatementParams(nsPIDOMWindowInner* aWindow,
  34                                  Statement* aStatement)
  35     : mWindow(aWindow), mStatement(aStatement), mParamCount(0) {
  36   NS_ASSERTION(mStatement != nullptr, "mStatement is null");
  37   (void)mStatement->GetParameterCount(&mParamCount);
  38 }
  39
  40 JSObject* StatementParams::WrapObject(JSContext* aCx,
  41                                       JS::Handle<JSObject*> aGivenProto) {
  42   return dom::MozStorageStatementParams_Binding::Wrap(aCx, this, aGivenProto);
  43 }
  44
  45 void StatementParams::NamedGetter(JSContext* aCx, const nsAString& aName,
  46                                   bool& aFound,
  47                                   JS::MutableHandle<JS::Value> aResult,
  48                                   mozilla::ErrorResult& aRv) {
  49   if (!mStatement) {
  50     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
  51     return;
  52   }
  53
  54   // Unfortunately there's no API that lets us return the parameter value.
  55   aFound = false;
  56 }
  57
  58 void StatementParams::NamedSetter(JSContext* aCx, const nsAString& aName,
  59                                   JS::Handle<JS::Value> aValue,
  60                                   mozilla::ErrorResult& aRv) {
  61   if (!mStatement) {
  62     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
  63     return;
  64   }
  65
  66   NS_ConvertUTF16toUTF8 name(aName);
  67
  68   // Check to see if there's a parameter with this name.
  69   nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCx, aValue));
  70   if (!variant) {
  71     aRv.Throw(NS_ERROR_UNEXPECTED);
  72     return;
  73   }
  74
  75   aRv = mStatement->BindByName(name, variant);
  76 }
  77
  78 void StatementParams::GetSupportedNames(nsTArray<nsString>& aNames) {
  79   if (!mStatement) {
  80     return;
  81   }
  82
  83   for (uint32_t i = 0; i < mParamCount; i++) {
  84     // Get the name of our parameter.
  85     nsAutoCString name;
  86     nsresult rv = mStatement->GetParameterName(i, name);
  87     if (NS_WARN_IF(NS_FAILED(rv))) {
  88       return;
  89     }
  90
  91     // But drop the first character, which is going to be a ':'.
  92     name = Substring(name, 1);
  93     aNames.AppendElement(NS_ConvertUTF8toUTF16(name));
  94   }
  95 }
  96
  97 void StatementParams::IndexedGetter(JSContext* aCx, uint32_t aIndex,
  98                                     bool& aFound,
  99                                     JS::MutableHandle<JS::Value> aResult,
 100                                     mozilla::ErrorResult& aRv) {
 101   if (!mStatement) {
 102     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
 103     return;
 104   }
 105
 106   // Unfortunately there's no API that lets us return the parameter value.
 107   aFound = false;
 108 }
 109
 110 void StatementParams::IndexedSetter(JSContext* aCx, uint32_t aIndex,
 111                                     JS::Handle<JS::Value> aValue,
 112                                     mozilla::ErrorResult& aRv) {
 113   if (!mStatement) {
 114     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
 115     return;
 116   }
 117
 118   nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCx, aValue));
 119   if (!variant) {
 120     aRv.Throw(NS_ERROR_UNEXPECTED);
 121     return;
 122   }
 123
 124   aRv = mStatement->BindByIndex(aIndex, variant);
 125 }
 126
 127 }  // namespace storage
 128 }  // namespace mozilla