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, Statement *aStatement)
  34 : mWindow(aWindow),
  35   mStatement(aStatement),
  36   mParamCount(0)
  37 {
  38   NS_ASSERTION(mStatement != nullptr, "mStatement is null");
  39   (void)mStatement->GetParameterCount(&mParamCount);
  40 }
  41
  42 JSObject*
  43 StatementParams::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
  44 {
  45   return dom::MozStorageStatementParamsBinding::Wrap(aCx, this, aGivenProto);
  46 }
  47
  48 void
  49 StatementParams::NamedGetter(JSContext* aCx,
  50                              const nsAString& aName,
  51                              bool& aFound,
  52                              JS::MutableHandle<JS::Value> aResult,
  53                              mozilla::ErrorResult& aRv)
  54 {
  55   if (!mStatement) {
  56     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
  57     return;
  58   }
  59
  60   // Unfortunately there's no API that lets us return the parameter value.
  61   aFound = false;
  62 }
  63
  64 void
  65 StatementParams::NamedSetter(JSContext* aCx,
  66                              const nsAString& aName,
  67                              JS::Handle<JS::Value> aValue,
  68                              mozilla::ErrorResult& aRv)
  69 {
  70   if (!mStatement) {
  71     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
  72     return;
  73   }
  74
  75   NS_ConvertUTF16toUTF8 name(aName);
  76
  77   // Check to see if there's a parameter with this name.
  78   nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCx, aValue));
  79   if (!variant) {
  80     aRv.Throw(NS_ERROR_UNEXPECTED);
  81     return;
  82   }
  83
  84   aRv = mStatement->BindByName(name, variant);
  85 }
  86
  87 void
  88 StatementParams::GetSupportedNames(nsTArray<nsString>& aNames)
  89 {
  90   if (!mStatement) {
  91     return;
  92   }
  93
  94   for (uint32_t i = 0; i < mParamCount; i++) {
  95     // Get the name of our parameter.
  96     nsAutoCString name;
  97     nsresult rv = mStatement->GetParameterName(i, name);
  98     if (NS_WARN_IF(NS_FAILED(rv))) {
  99       return;
 100     }
 101
 102     // But drop the first character, which is going to be a ':'.
 103     name = Substring(name, 1);
 104     aNames.AppendElement(NS_ConvertUTF8toUTF16(name));
 105   }
 106 }
 107
 108 void
 109 StatementParams::IndexedGetter(JSContext* aCx,
 110                                uint32_t aIndex,
 111                                bool& aFound,
 112                                JS::MutableHandle<JS::Value> aResult,
 113                                mozilla::ErrorResult& aRv)
 114 {
 115   if (!mStatement) {
 116     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
 117     return;
 118   }
 119
 120   // Unfortunately there's no API that lets us return the parameter value.
 121   aFound = false;
 122 }
 123
 124 void
 125 StatementParams::IndexedSetter(JSContext* aCx,
 126                                uint32_t aIndex,
 127                                JS::Handle<JS::Value> aValue,
 128                                mozilla::ErrorResult& aRv)
 129 {
 130   if (!mStatement) {
 131     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
 132     return;
 133   }
 134
 135   nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCx, aValue));
 136   if (!variant) {
 137     aRv.Throw(NS_ERROR_UNEXPECTED);
 138     return;
 139   }
 140
 141   aRv = mStatement->BindByIndex(aIndex, variant);
 142 }
 143
 144 } // namespace storage
 145 } // namespace mozilla