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