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 "mozStorageStatementParams.h"
   8
   9 #include "nsJSUtils.h"
  10 #include "nsString.h"
  11
  12 #include "jsapi.h"
  13
  14 #include "mozilla/ErrorResult.h"
  15 #include "mozilla/dom/MozStorageStatementParamsBinding.h"
  16 #include "mozStoragePrivateHelpers.h"
  17 #include "mozStorageStatement.h"
  18
  19 namespace mozilla {
  20 namespace storage {
  21
  22 ////////////////////////////////////////////////////////////////////////////////
  23 //// StatementParams
  24
  25 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(StatementParams, mWindow)
  26
  27 NS_INTERFACE_TABLE_HEAD(StatementParams)
  28   NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
  29   NS_INTERFACE_TABLE(StatementParams, nsISupports)
  30   NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(StatementParams)
  31 NS_INTERFACE_MAP_END
  32
  33 NS_IMPL_CYCLE_COLLECTING_ADDREF(StatementParams)
  34 NS_IMPL_CYCLE_COLLECTING_RELEASE(StatementParams)
  35
  36 StatementParams::StatementParams(nsPIDOMWindowInner* aWindow,
  37                                  Statement* aStatement)
  38     : mWindow(aWindow), mStatement(aStatement), mParamCount(0) {
  39   NS_ASSERTION(mStatement != nullptr, "mStatement is null");
  40   (void)mStatement->GetParameterCount(&mParamCount);
  41 }
  42
  43 JSObject* StatementParams::WrapObject(JSContext* aCx,
  44                                       JS::Handle<JSObject*> aGivenProto) {
  45   return dom::MozStorageStatementParams_Binding::Wrap(aCx, this, aGivenProto);
  46 }
  47
  48 void StatementParams::NamedGetter(JSContext* aCx, const nsAString& aName,
  49                                   bool& aFound,
  50                                   JS::MutableHandle<JS::Value> aResult,
  51                                   mozilla::ErrorResult& aRv) {
  52   if (!mStatement) {
  53     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
  54     return;
  55   }
  56
  57   // Unfortunately there's no API that lets us return the parameter value.
  58   aFound = false;
  59 }
  60
  61 void StatementParams::NamedSetter(JSContext* aCx, const nsAString& aName,
  62                                   JS::Handle<JS::Value> aValue,
  63                                   mozilla::ErrorResult& aRv) {
  64   if (!mStatement) {
  65     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
  66     return;
  67   }
  68
  69   NS_ConvertUTF16toUTF8 name(aName);
  70
  71   // Check to see if there's a parameter with this name.
  72   nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCx, aValue));
  73   if (!variant) {
  74     aRv.Throw(NS_ERROR_UNEXPECTED);
  75     return;
  76   }
  77
  78   aRv = mStatement->BindByName(name, variant);
  79 }
  80
  81 void StatementParams::GetSupportedNames(nsTArray<nsString>& aNames) {
  82   if (!mStatement) {
  83     return;
  84   }
  85
  86   for (uint32_t i = 0; i < mParamCount; i++) {
  87     // Get the name of our parameter.
  88     nsAutoCString name;
  89     nsresult rv = mStatement->GetParameterName(i, name);
  90     if (NS_WARN_IF(NS_FAILED(rv))) {
  91       return;
  92     }
  93
  94     // But drop the first character, which is going to be a ':'.
  95     name = Substring(name, 1);
  96     aNames.AppendElement(NS_ConvertUTF8toUTF16(name));
  97   }
  98 }
  99
 100 void StatementParams::IndexedGetter(JSContext* aCx, uint32_t aIndex,
 101                                     bool& aFound,
 102                                     JS::MutableHandle<JS::Value> aResult,
 103                                     mozilla::ErrorResult& aRv) {
 104   if (!mStatement) {
 105     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
 106     return;
 107   }
 108
 109   // Unfortunately there's no API that lets us return the parameter value.
 110   aFound = false;
 111 }
 112
 113 void StatementParams::IndexedSetter(JSContext* aCx, uint32_t aIndex,
 114                                     JS::Handle<JS::Value> aValue,
 115                                     mozilla::ErrorResult& aRv) {
 116   if (!mStatement) {
 117     aRv.Throw(NS_ERROR_NOT_INITIALIZED);
 118     return;
 119   }
 120
 121   nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCx, aValue));
 122   if (!variant) {
 123     aRv.Throw(NS_ERROR_UNEXPECTED);
 124     return;
 125   }
 126
 127   aRv = mStatement->BindByIndex(aIndex, variant);
 128 }
 129
 130 }  // namespace storage
 131 }  // namespace mozilla