Add m-esr52 at 52.6.0

1 files changed, 1990 insertions, 0 deletions

diff --git a/toolkit/components/places/nsAnnotationService.cpp b/toolkit/components/places/nsAnnotationService.cpp
new file mode 100644
index 0000000000..9d62bd34a8
--- /dev/null
+++ b/toolkit/components/places/nsAnnotationService.cpp
@@ -0,0 +1,1990 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ArrayUtils.h"
+
+#include "nsAnnotationService.h"
+#include "nsNavHistory.h"
+#include "nsPlacesTables.h"
+#include "nsPlacesIndexes.h"
+#include "nsPlacesMacros.h"
+#include "Helpers.h"
+
+#include "nsNetUtil.h"
+#include "nsIVariant.h"
+#include "nsString.h"
+#include "nsVariant.h"
+#include "mozilla/storage.h"
+
+#include "GeckoProfiler.h"
+
+#include "nsNetCID.h"
+
+using namespace mozilla;
+using namespace mozilla::places;
+
+#define ENSURE_ANNO_TYPE(_type, _statement)                                    \
+  PR_BEGIN_MACRO                                                               \
+  int32_t type = _statement->AsInt32(kAnnoIndex_Type);                         \
+  NS_ENSURE_TRUE(type == nsIAnnotationService::_type, NS_ERROR_INVALID_ARG);   \
+  PR_END_MACRO
+
+#define NOTIFY_ANNOS_OBSERVERS(_notification)                                  \
+  PR_BEGIN_MACRO                                                               \
+  for (int32_t i = 0; i < mObservers.Count(); i++)                             \
+    mObservers[i]->_notification;                                              \
+  PR_END_MACRO
+
+const int32_t nsAnnotationService::kAnnoIndex_ID = 0;
+const int32_t nsAnnotationService::kAnnoIndex_PageOrItem = 1;
+const int32_t nsAnnotationService::kAnnoIndex_NameID = 2;
+const int32_t nsAnnotationService::kAnnoIndex_Content = 3;
+const int32_t nsAnnotationService::kAnnoIndex_Flags = 4;
+const int32_t nsAnnotationService::kAnnoIndex_Expiration = 5;
+const int32_t nsAnnotationService::kAnnoIndex_Type = 6;
+const int32_t nsAnnotationService::kAnnoIndex_DateAdded = 7;
+const int32_t nsAnnotationService::kAnnoIndex_LastModified = 8;
+
+namespace mozilla {
+namespace places {
+
+////////////////////////////////////////////////////////////////////////////////
+//// AnnotatedResult
+
+AnnotatedResult::AnnotatedResult(const nsCString& aGUID,
+                                 nsIURI* aURI,
+                                 int64_t aItemId,
+                                 const nsACString& aAnnotationName,
+                                 nsIVariant* aAnnotationValue)
+: mGUID(aGUID)
+, mURI(aURI)
+, mItemId(aItemId)
+, mAnnotationName(aAnnotationName)
+, mAnnotationValue(aAnnotationValue)
+{
+}
+
+AnnotatedResult::~AnnotatedResult()
+{
+}
+
+NS_IMETHODIMP
+AnnotatedResult::GetGuid(nsACString& _guid)
+{
+  _guid = mGUID;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AnnotatedResult::GetUri(nsIURI** _uri)
+{
+  NS_IF_ADDREF(*_uri = mURI);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AnnotatedResult::GetItemId(int64_t* _itemId)
+{
+  *_itemId = mItemId;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AnnotatedResult::GetAnnotationName(nsACString& _annotationName)
+{
+  _annotationName = mAnnotationName;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AnnotatedResult::GetAnnotationValue(nsIVariant** _annotationValue)
+{
+  NS_IF_ADDREF(*_annotationValue = mAnnotationValue);
+  return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS(AnnotatedResult, mozIAnnotatedResult)
+
+} // namespace places
+} // namespace mozilla
+
+PLACES_FACTORY_SINGLETON_IMPLEMENTATION(nsAnnotationService, gAnnotationService)
+
+NS_IMPL_ISUPPORTS(nsAnnotationService
+, nsIAnnotationService
+, nsIObserver
+, nsISupportsWeakReference
+)
+
+
+nsAnnotationService::nsAnnotationService()
+  : mHasSessionAnnotations(false)
+{
+  NS_ASSERTION(!gAnnotationService,
+               "Attempting to create two instances of the service!");
+  gAnnotationService = this;
+}
+
+
+nsAnnotationService::~nsAnnotationService()
+{
+  NS_ASSERTION(gAnnotationService == this,
+               "Deleting a non-singleton instance of the service");
+  if (gAnnotationService == this)
+    gAnnotationService = nullptr;
+}
+
+
+nsresult
+nsAnnotationService::Init()
+{
+  mDB = Database::GetDatabase();
+  NS_ENSURE_STATE(mDB);
+
+  nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
+  if (obsSvc) {
+    (void)obsSvc->AddObserver(this, TOPIC_PLACES_SHUTDOWN, true);
+  }
+
+  return NS_OK;
+}
+
+nsresult
+nsAnnotationService::SetAnnotationStringInternal(nsIURI* aURI,
+                                                 int64_t aItemId,
+                                                 const nsACString& aName,
+                                                 const nsAString& aValue,
+                                                 int32_t aFlags,
+                                                 uint16_t aExpiration)
+{
+  mozStorageTransaction transaction(mDB->MainConn(), false);
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartSetAnnotation(aURI, aItemId, aName, aFlags, aExpiration,
+                                   nsIAnnotationService::TYPE_STRING,
+                                   statement);
+  NS_ENSURE_SUCCESS(rv, rv);
+  mozStorageStatementScoper scoper(statement);
+
+  rv = statement->BindStringByName(NS_LITERAL_CSTRING("content"), aValue);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = transaction.Commit();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetPageAnnotation(nsIURI* aURI,
+                                       const nsACString& aName,
+                                       nsIVariant* aValue,
+                                       int32_t aFlags,
+                                       uint16_t aExpiration)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG(aValue);
+
+  uint16_t dataType;
+  nsresult rv = aValue->GetDataType(&dataType);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  switch (dataType) {
+    case nsIDataType::VTYPE_INT8:
+    case nsIDataType::VTYPE_UINT8:
+    case nsIDataType::VTYPE_INT16:
+    case nsIDataType::VTYPE_UINT16:
+    case nsIDataType::VTYPE_INT32:
+    case nsIDataType::VTYPE_UINT32:
+    case nsIDataType::VTYPE_BOOL: {
+      int32_t valueInt;
+      rv = aValue->GetAsInt32(&valueInt);
+      if (NS_SUCCEEDED(rv)) {
+        NS_ENSURE_SUCCESS(rv, rv);
+        rv = SetPageAnnotationInt32(aURI, aName, valueInt, aFlags, aExpiration);
+        NS_ENSURE_SUCCESS(rv, rv);
+        return NS_OK;
+      }
+      // Fall through int64_t case otherwise.
+      MOZ_FALLTHROUGH;
+    }
+    case nsIDataType::VTYPE_INT64:
+    case nsIDataType::VTYPE_UINT64: {
+      int64_t valueLong;
+      rv = aValue->GetAsInt64(&valueLong);
+      if (NS_SUCCEEDED(rv)) {
+        NS_ENSURE_SUCCESS(rv, rv);
+        rv = SetPageAnnotationInt64(aURI, aName, valueLong, aFlags, aExpiration);
+        NS_ENSURE_SUCCESS(rv, rv);
+        return NS_OK;
+      }
+      // Fall through double case otherwise.
+      MOZ_FALLTHROUGH;
+    }
+    case nsIDataType::VTYPE_FLOAT:
+    case nsIDataType::VTYPE_DOUBLE: {
+      double valueDouble;
+      rv = aValue->GetAsDouble(&valueDouble);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = SetPageAnnotationDouble(aURI, aName, valueDouble, aFlags, aExpiration);
+      NS_ENSURE_SUCCESS(rv, rv);
+      return NS_OK;
+    }
+    case nsIDataType::VTYPE_CHAR:
+    case nsIDataType::VTYPE_WCHAR:
+    case nsIDataType::VTYPE_DOMSTRING:
+    case nsIDataType::VTYPE_CHAR_STR:
+    case nsIDataType::VTYPE_WCHAR_STR:
+    case nsIDataType::VTYPE_STRING_SIZE_IS:
+    case nsIDataType::VTYPE_WSTRING_SIZE_IS:
+    case nsIDataType::VTYPE_UTF8STRING:
+    case nsIDataType::VTYPE_CSTRING:
+    case nsIDataType::VTYPE_ASTRING: {
+      nsAutoString stringValue;
+      rv = aValue->GetAsAString(stringValue);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = SetPageAnnotationString(aURI, aName, stringValue, aFlags, aExpiration);
+      NS_ENSURE_SUCCESS(rv, rv);
+      return NS_OK;
+    }
+  }
+
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetItemAnnotation(int64_t aItemId,
+                                       const nsACString& aName,
+                                       nsIVariant* aValue,
+                                       int32_t aFlags,
+                                       uint16_t aExpiration,
+                                       uint16_t aSource)
+{
+  PROFILER_LABEL("AnnotationService", "SetItemAnnotation",
+    js::ProfileEntry::Category::OTHER);
+
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG(aValue);
+
+  if (aExpiration == EXPIRE_WITH_HISTORY)
+    return NS_ERROR_INVALID_ARG;
+
+  uint16_t dataType;
+  nsresult rv = aValue->GetDataType(&dataType);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  switch (dataType) {
+    case nsIDataType::VTYPE_INT8:
+    case nsIDataType::VTYPE_UINT8:
+    case nsIDataType::VTYPE_INT16:
+    case nsIDataType::VTYPE_UINT16:
+    case nsIDataType::VTYPE_INT32:
+    case nsIDataType::VTYPE_UINT32:
+    case nsIDataType::VTYPE_BOOL: {
+      int32_t valueInt;
+      rv = aValue->GetAsInt32(&valueInt);
+      if (NS_SUCCEEDED(rv)) {
+        NS_ENSURE_SUCCESS(rv, rv);
+        rv = SetItemAnnotationInt32(aItemId, aName, valueInt, aFlags, aExpiration, aSource);
+        NS_ENSURE_SUCCESS(rv, rv);
+        return NS_OK;
+      }
+      // Fall through int64_t case otherwise.
+      MOZ_FALLTHROUGH;
+    }
+    case nsIDataType::VTYPE_INT64:
+    case nsIDataType::VTYPE_UINT64: {
+      int64_t valueLong;
+      rv = aValue->GetAsInt64(&valueLong);
+      if (NS_SUCCEEDED(rv)) {
+        NS_ENSURE_SUCCESS(rv, rv);
+        rv = SetItemAnnotationInt64(aItemId, aName, valueLong, aFlags, aExpiration, aSource);
+        NS_ENSURE_SUCCESS(rv, rv);
+        return NS_OK;
+      }
+      // Fall through double case otherwise.
+      MOZ_FALLTHROUGH;
+    }
+    case nsIDataType::VTYPE_FLOAT:
+    case nsIDataType::VTYPE_DOUBLE: {
+      double valueDouble;
+      rv = aValue->GetAsDouble(&valueDouble);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = SetItemAnnotationDouble(aItemId, aName, valueDouble, aFlags, aExpiration, aSource);
+      NS_ENSURE_SUCCESS(rv, rv);
+      return NS_OK;
+    }
+    case nsIDataType::VTYPE_CHAR:
+    case nsIDataType::VTYPE_WCHAR:
+    case nsIDataType::VTYPE_DOMSTRING:
+    case nsIDataType::VTYPE_CHAR_STR:
+    case nsIDataType::VTYPE_WCHAR_STR:
+    case nsIDataType::VTYPE_STRING_SIZE_IS:
+    case nsIDataType::VTYPE_WSTRING_SIZE_IS:
+    case nsIDataType::VTYPE_UTF8STRING:
+    case nsIDataType::VTYPE_CSTRING:
+    case nsIDataType::VTYPE_ASTRING: {
+      nsAutoString stringValue;
+      rv = aValue->GetAsAString(stringValue);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = SetItemAnnotationString(aItemId, aName, stringValue, aFlags, aExpiration, aSource);
+      NS_ENSURE_SUCCESS(rv, rv);
+      return NS_OK;
+    }
+  }
+
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetPageAnnotationString(nsIURI* aURI,
+                                             const nsACString& aName,
+                                             const nsAString& aValue,
+                                             int32_t aFlags,
+                                             uint16_t aExpiration)
+{
+  NS_ENSURE_ARG(aURI);
+
+  nsresult rv = SetAnnotationStringInternal(aURI, 0, aName, aValue,
+                                            aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationSet(aURI, aName));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetItemAnnotationString(int64_t aItemId,
+                                             const nsACString& aName,
+                                             const nsAString& aValue,
+                                             int32_t aFlags,
+                                             uint16_t aExpiration,
+                                             uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  if (aExpiration == EXPIRE_WITH_HISTORY)
+    return NS_ERROR_INVALID_ARG;
+
+  nsresult rv = SetAnnotationStringInternal(nullptr, aItemId, aName, aValue,
+                                            aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationSet(aItemId, aName, aSource));
+
+  return NS_OK;
+}
+
+
+nsresult
+nsAnnotationService::SetAnnotationInt32Internal(nsIURI* aURI,
+                                                int64_t aItemId,
+                                                const nsACString& aName,
+                                                int32_t aValue,
+                                                int32_t aFlags,
+                                                uint16_t aExpiration)
+{
+  mozStorageTransaction transaction(mDB->MainConn(), false);
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartSetAnnotation(aURI, aItemId, aName, aFlags, aExpiration,
+                                   nsIAnnotationService::TYPE_INT32,
+                                   statement);
+  NS_ENSURE_SUCCESS(rv, rv);
+  mozStorageStatementScoper scoper(statement);
+
+  rv = statement->BindInt32ByName(NS_LITERAL_CSTRING("content"), aValue);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = transaction.Commit();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetPageAnnotationInt32(nsIURI* aURI,
+                                            const nsACString& aName,
+                                            int32_t aValue,
+                                            int32_t aFlags,
+                                            uint16_t aExpiration)
+{
+  NS_ENSURE_ARG(aURI);
+
+  nsresult rv = SetAnnotationInt32Internal(aURI, 0, aName, aValue,
+                                           aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationSet(aURI, aName));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetItemAnnotationInt32(int64_t aItemId,
+                                            const nsACString& aName,
+                                            int32_t aValue,
+                                            int32_t aFlags,
+                                            uint16_t aExpiration,
+                                            uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  if (aExpiration == EXPIRE_WITH_HISTORY)
+    return NS_ERROR_INVALID_ARG;
+
+  nsresult rv = SetAnnotationInt32Internal(nullptr, aItemId, aName, aValue,
+                                           aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationSet(aItemId, aName, aSource));
+
+  return NS_OK;
+}
+
+
+nsresult
+nsAnnotationService::SetAnnotationInt64Internal(nsIURI* aURI,
+                                                int64_t aItemId,
+                                                const nsACString& aName,
+                                                int64_t aValue,
+                                                int32_t aFlags,
+                                                uint16_t aExpiration)
+{
+  mozStorageTransaction transaction(mDB->MainConn(), false);
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartSetAnnotation(aURI, aItemId, aName, aFlags, aExpiration,
+                                   nsIAnnotationService::TYPE_INT64,
+                                   statement);
+  NS_ENSURE_SUCCESS(rv, rv);
+  mozStorageStatementScoper scoper(statement);
+
+  rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("content"), aValue);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = transaction.Commit();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetPageAnnotationInt64(nsIURI* aURI,
+                                            const nsACString& aName,
+                                            int64_t aValue,
+                                            int32_t aFlags,
+                                            uint16_t aExpiration)
+{
+  NS_ENSURE_ARG(aURI);
+
+  nsresult rv = SetAnnotationInt64Internal(aURI, 0, aName, aValue,
+                                           aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationSet(aURI, aName));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetItemAnnotationInt64(int64_t aItemId,
+                                            const nsACString& aName,
+                                            int64_t aValue,
+                                            int32_t aFlags,
+                                            uint16_t aExpiration,
+                                            uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  if (aExpiration == EXPIRE_WITH_HISTORY)
+    return NS_ERROR_INVALID_ARG;
+
+  nsresult rv = SetAnnotationInt64Internal(nullptr, aItemId, aName, aValue,
+                                           aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationSet(aItemId, aName, aSource));
+
+  return NS_OK;
+}
+
+
+nsresult
+nsAnnotationService::SetAnnotationDoubleInternal(nsIURI* aURI,
+                                                 int64_t aItemId,
+                                                 const nsACString& aName,
+                                                 double aValue,
+                                                 int32_t aFlags,
+                                                 uint16_t aExpiration)
+{
+  mozStorageTransaction transaction(mDB->MainConn(), false);
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartSetAnnotation(aURI, aItemId, aName, aFlags, aExpiration,
+                                   nsIAnnotationService::TYPE_DOUBLE,
+                                   statement);
+  NS_ENSURE_SUCCESS(rv, rv);
+  mozStorageStatementScoper scoper(statement);
+
+  rv = statement->BindDoubleByName(NS_LITERAL_CSTRING("content"), aValue);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = transaction.Commit();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetPageAnnotationDouble(nsIURI* aURI,
+                                             const nsACString& aName,
+                                             double aValue,
+                                             int32_t aFlags,
+                                             uint16_t aExpiration)
+{
+  NS_ENSURE_ARG(aURI);
+
+  nsresult rv = SetAnnotationDoubleInternal(aURI, 0, aName, aValue,
+                                            aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationSet(aURI, aName));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::SetItemAnnotationDouble(int64_t aItemId,
+                                             const nsACString& aName,
+                                             double aValue,
+                                             int32_t aFlags,
+                                             uint16_t aExpiration,
+                                             uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  if (aExpiration == EXPIRE_WITH_HISTORY)
+    return NS_ERROR_INVALID_ARG;
+
+  nsresult rv = SetAnnotationDoubleInternal(nullptr, aItemId, aName, aValue,
+                                            aFlags, aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationSet(aItemId, aName, aSource));
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationString(nsIURI* aURI,
+                                             const nsACString& aName,
+                                             nsAString& _retval)
+{
+  NS_ENSURE_ARG(aURI);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_STRING, statement);
+  rv = statement->GetString(kAnnoIndex_Content, _retval);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationString(int64_t aItemId,
+                                             const nsACString& aName,
+                                             nsAString& _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_STRING, statement);
+  rv = statement->GetString(kAnnoIndex_Content, _retval);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotation(nsIURI* aURI,
+                                       const nsACString& aName,
+                                       nsIVariant** _retval)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+
+  nsCOMPtr<nsIWritableVariant> value = new nsVariant();
+  int32_t type = statement->AsInt32(kAnnoIndex_Type);
+  switch (type) {
+    case nsIAnnotationService::TYPE_INT32:
+    case nsIAnnotationService::TYPE_INT64:
+    case nsIAnnotationService::TYPE_DOUBLE: {
+      rv = value->SetAsDouble(statement->AsDouble(kAnnoIndex_Content));
+      break;
+    }
+    case nsIAnnotationService::TYPE_STRING: {
+      nsAutoString valueString;
+      rv = statement->GetString(kAnnoIndex_Content, valueString);
+      if (NS_SUCCEEDED(rv))
+        rv = value->SetAsAString(valueString);
+      break;
+    }
+    default: {
+      rv = NS_ERROR_UNEXPECTED;
+      break;
+    }
+  }
+
+  if (NS_SUCCEEDED(rv)) {
+    value.forget(_retval);
+  }
+
+  return rv;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotation(int64_t aItemId,
+                                       const nsACString& aName,
+                                       nsIVariant** _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+
+  nsCOMPtr<nsIWritableVariant> value = new nsVariant();
+  int32_t type = statement->AsInt32(kAnnoIndex_Type);
+  switch (type) {
+    case nsIAnnotationService::TYPE_INT32:
+    case nsIAnnotationService::TYPE_INT64:
+    case nsIAnnotationService::TYPE_DOUBLE: {
+      rv = value->SetAsDouble(statement->AsDouble(kAnnoIndex_Content));
+      break;
+    }
+    case nsIAnnotationService::TYPE_STRING: {
+      nsAutoString valueString;
+      rv = statement->GetString(kAnnoIndex_Content, valueString);
+      if (NS_SUCCEEDED(rv))
+        rv = value->SetAsAString(valueString);
+      break;
+    }
+    default: {
+      rv = NS_ERROR_UNEXPECTED;
+      break;
+    }
+  }
+
+  if (NS_SUCCEEDED(rv)) {
+    value.forget(_retval);
+  }
+
+  return rv;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationInt32(nsIURI* aURI,
+                                        const nsACString& aName,
+                                        int32_t* _retval)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_INT32, statement);
+  *_retval = statement->AsInt32(kAnnoIndex_Content);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationInt32(int64_t aItemId,
+                                            const nsACString& aName,
+                                            int32_t* _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_INT32, statement);
+  *_retval = statement->AsInt32(kAnnoIndex_Content);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationInt64(nsIURI* aURI,
+                                            const nsACString& aName,
+                                            int64_t* _retval)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_INT64, statement);
+  *_retval = statement->AsInt64(kAnnoIndex_Content);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationInt64(int64_t aItemId,
+                                            const nsACString& aName,
+                                            int64_t* _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_INT64, statement);
+  *_retval = statement->AsInt64(kAnnoIndex_Content);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationType(nsIURI* aURI,
+                                           const nsACString& aName,
+                                           uint16_t* _retval)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  *_retval = statement->AsInt32(kAnnoIndex_Type);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationType(int64_t aItemId,
+                                           const nsACString& aName,
+                                           uint16_t* _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  *_retval = statement->AsInt32(kAnnoIndex_Type);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationDouble(nsIURI* aURI,
+                                             const nsACString& aName,
+                                             double* _retval)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_DOUBLE, statement);
+  *_retval = statement->AsDouble(kAnnoIndex_Content);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationDouble(int64_t aItemId,
+                                             const nsACString& aName,
+                                             double* _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  ENSURE_ANNO_TYPE(TYPE_DOUBLE, statement);
+  *_retval = statement->AsDouble(kAnnoIndex_Content);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationInfo(nsIURI* aURI,
+                                           const nsACString& aName,
+                                           int32_t* _flags,
+                                           uint16_t* _expiration,
+                                           uint16_t* _storageType)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_flags);
+  NS_ENSURE_ARG_POINTER(_expiration);
+  NS_ENSURE_ARG_POINTER(_storageType);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(aURI, 0, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  *_flags = statement->AsInt32(kAnnoIndex_Flags);
+  *_expiration = (uint16_t)statement->AsInt32(kAnnoIndex_Expiration);
+  int32_t type = (uint16_t)statement->AsInt32(kAnnoIndex_Type);
+  if (type == 0) {
+    // For annotations created before explicit typing,
+    // we can't determine type, just return as string type.
+    *_storageType = nsIAnnotationService::TYPE_STRING;
+  }
+  else
+    *_storageType = type;
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationInfo(int64_t aItemId,
+                                           const nsACString& aName,
+                                           int32_t* _flags,
+                                           uint16_t* _expiration,
+                                           uint16_t* _storageType)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_flags);
+  NS_ENSURE_ARG_POINTER(_expiration);
+  NS_ENSURE_ARG_POINTER(_storageType);
+
+  nsCOMPtr<mozIStorageStatement> statement;
+  nsresult rv = StartGetAnnotation(nullptr, aItemId, aName, statement);
+  if (NS_FAILED(rv))
+    return rv;
+
+  mozStorageStatementScoper scoper(statement);
+  *_flags = statement->AsInt32(kAnnoIndex_Flags);
+  *_expiration = (uint16_t)statement->AsInt32(kAnnoIndex_Expiration);
+  int32_t type = (uint16_t)statement->AsInt32(kAnnoIndex_Type);
+  if (type == 0) {
+    // For annotations created before explicit typing,
+    // we can't determine type, just return as string type.
+    *_storageType = nsIAnnotationService::TYPE_STRING;
+  }
+  else {
+    *_storageType = type;
+  }
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPagesWithAnnotation(const nsACString& aName,
+                                            uint32_t* _resultCount,
+                                            nsIURI*** _results)
+{
+  NS_ENSURE_TRUE(!aName.IsEmpty(), NS_ERROR_INVALID_ARG);
+  NS_ENSURE_ARG_POINTER(_resultCount);
+  NS_ENSURE_ARG_POINTER(_results);
+
+  *_resultCount = 0;
+  *_results = nullptr;
+  nsCOMArray<nsIURI> results;
+
+  nsresult rv = GetPagesWithAnnotationCOMArray(aName, &results);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Convert to raw array.
+  if (results.Count() == 0)
+    return NS_OK;
+
+  *_resultCount = results.Count();
+  results.Forget(_results);
+
+  return NS_OK;
+}
+
+
+nsresult
+nsAnnotationService::GetPagesWithAnnotationCOMArray(const nsACString& aName,
+                                                    nsCOMArray<nsIURI>* _results)
+{
+  nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
+    "SELECT h.url "
+    "FROM moz_anno_attributes n "
+    "JOIN moz_annos a ON n.id = a.anno_attribute_id "
+    "JOIN moz_places h ON h.id = a.place_id "
+    "WHERE n.name = :anno_name"
+  );
+  NS_ENSURE_STATE(stmt);
+  mozStorageStatementScoper scoper(stmt);
+
+  nsresult rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasMore = false;
+  while (NS_SUCCEEDED(rv = stmt->ExecuteStep(&hasMore)) &&
+         hasMore) {
+    nsAutoCString uristring;
+    rv = stmt->GetUTF8String(0, uristring);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // convert to a URI, in case of some invalid URI, just ignore this row
+    // so we can mostly continue.
+    nsCOMPtr<nsIURI> uri;
+    rv = NS_NewURI(getter_AddRefs(uri), uristring);
+    if (NS_FAILED(rv))
+      continue;
+
+    bool added = _results->AppendObject(uri);
+    NS_ENSURE_TRUE(added, NS_ERROR_OUT_OF_MEMORY);
+  }
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemsWithAnnotation(const nsACString& aName,
+                                            uint32_t* _resultCount,
+                                            int64_t** _results)
+{
+  NS_ENSURE_TRUE(!aName.IsEmpty(), NS_ERROR_INVALID_ARG);
+  NS_ENSURE_ARG_POINTER(_resultCount);
+  NS_ENSURE_ARG_POINTER(_results);
+
+  *_resultCount = 0;
+  *_results = nullptr;
+  nsTArray<int64_t> results;
+
+  nsresult rv = GetItemsWithAnnotationTArray(aName, &results);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Convert to raw array.
+  if (results.Length() == 0)
+    return NS_OK;
+
+  *_results = static_cast<int64_t*>
+                         (moz_xmalloc(results.Length() * sizeof(int64_t)));
+  NS_ENSURE_TRUE(*_results, NS_ERROR_OUT_OF_MEMORY);
+
+  *_resultCount = results.Length();
+  for (uint32_t i = 0; i < *_resultCount; i ++) {
+    (*_results)[i] = results[i];
+  }
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetAnnotationsWithName(const nsACString& aName,
+                                            uint32_t* _count,
+                                            mozIAnnotatedResult*** _annotations)
+{
+  NS_ENSURE_ARG(!aName.IsEmpty());
+  NS_ENSURE_ARG_POINTER(_annotations);
+
+  *_count = 0;
+  *_annotations = nullptr;
+  nsCOMArray<mozIAnnotatedResult> annotations;
+
+  nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
+    "SELECT h.guid, h.url, -1, a.type, a.content "
+    "FROM moz_anno_attributes n "
+    "JOIN moz_annos a ON n.id = a.anno_attribute_id "
+    "JOIN moz_places h ON h.id = a.place_id "
+    "WHERE n.name = :anno_name "
+    "UNION ALL "
+    "SELECT b.guid, h.url, b.id, a.type, a.content "
+    "FROM moz_anno_attributes n "
+    "JOIN moz_items_annos a ON n.id = a.anno_attribute_id "
+    "JOIN moz_bookmarks b ON b.id = a.item_id "
+    "LEFT JOIN moz_places h ON h.id = b.fk "
+    "WHERE n.name = :anno_name "
+  );
+  NS_ENSURE_STATE(stmt);
+  mozStorageStatementScoper scoper(stmt);
+
+  nsresult rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"),
+                                           aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasMore = false;
+  while (NS_SUCCEEDED(rv = stmt->ExecuteStep(&hasMore)) && hasMore) {
+    nsAutoCString guid;
+    rv = stmt->GetUTF8String(0, guid);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIURI> uri;
+    bool uriIsNull = false;
+    rv = stmt->GetIsNull(1, &uriIsNull);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!uriIsNull) {
+      nsAutoCString url;
+      rv = stmt->GetUTF8String(1, url);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = NS_NewURI(getter_AddRefs(uri), url);
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+
+    int64_t itemId = stmt->AsInt64(2);
+    int32_t type = stmt->AsInt32(3);
+
+    nsCOMPtr<nsIWritableVariant> variant = new nsVariant();
+    switch (type) {
+      case nsIAnnotationService::TYPE_INT32: {
+        rv = variant->SetAsInt32(stmt->AsInt32(4));
+        break;
+      }
+      case nsIAnnotationService::TYPE_INT64: {
+        rv = variant->SetAsInt64(stmt->AsInt64(4));
+        break;
+      }
+      case nsIAnnotationService::TYPE_DOUBLE: {
+        rv = variant->SetAsDouble(stmt->AsDouble(4));
+        break;
+      }
+      case nsIAnnotationService::TYPE_STRING: {
+        nsAutoString valueString;
+        rv = stmt->GetString(4, valueString);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = variant->SetAsAString(valueString);
+        break;
+      }
+      default:
+        MOZ_ASSERT(false, "Unsupported annotation type");
+        // Move to the next result.
+        continue;
+    }
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<mozIAnnotatedResult> anno = new AnnotatedResult(guid, uri, itemId,
+                                                             aName, variant);
+    NS_ENSURE_TRUE(annotations.AppendObject(anno), NS_ERROR_OUT_OF_MEMORY);
+  }
+
+  // Convert to raw array.
+  if (annotations.Count() == 0)
+    return NS_OK;
+
+  *_count = annotations.Count();
+  annotations.Forget(_annotations);
+
+  return NS_OK;
+}
+
+
+nsresult
+nsAnnotationService::GetItemsWithAnnotationTArray(const nsACString& aName,
+                                                  nsTArray<int64_t>* _results)
+{
+  nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
+    "SELECT a.item_id "
+    "FROM moz_anno_attributes n "
+    "JOIN moz_items_annos a ON n.id = a.anno_attribute_id "
+    "WHERE n.name = :anno_name"
+  );
+  NS_ENSURE_STATE(stmt);
+  mozStorageStatementScoper scoper(stmt);
+
+  nsresult rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasMore = false;
+  while (NS_SUCCEEDED(stmt->ExecuteStep(&hasMore)) &&
+         hasMore) {
+    if (!_results->AppendElement(stmt->AsInt64(0)))
+      return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetPageAnnotationNames(nsIURI* aURI,
+                                            uint32_t* _count,
+                                            nsIVariant*** _result)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_count);
+  NS_ENSURE_ARG_POINTER(_result);
+
+  *_count = 0;
+  *_result = nullptr;
+
+  nsTArray<nsCString> names;
+  nsresult rv = GetAnnotationNamesTArray(aURI, 0, &names);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (names.Length() == 0)
+    return NS_OK;
+
+  *_result = static_cast<nsIVariant**>
+                        (moz_xmalloc(sizeof(nsIVariant*) * names.Length()));
+  NS_ENSURE_TRUE(*_result, NS_ERROR_OUT_OF_MEMORY);
+
+  for (uint32_t i = 0; i < names.Length(); i ++) {
+    nsCOMPtr<nsIWritableVariant> var = new nsVariant();
+    if (!var) {
+      // need to release all the variants we've already created
+      for (uint32_t j = 0; j < i; j ++)
+        NS_RELEASE((*_result)[j]);
+      free(*_result);
+      *_result = nullptr;
+      return NS_ERROR_OUT_OF_MEMORY;
+    }
+    var->SetAsAUTF8String(names[i]);
+    NS_ADDREF((*_result)[i] = var);
+  }
+  *_count = names.Length();
+
+  return NS_OK;
+}
+
+
+nsresult
+nsAnnotationService::GetAnnotationNamesTArray(nsIURI* aURI,
+                                              int64_t aItemId,
+                                              nsTArray<nsCString>* _result)
+{
+  _result->Clear();
+
+  bool isItemAnnotation = (aItemId > 0);
+  nsCOMPtr<mozIStorageStatement> statement;
+  if (isItemAnnotation) {
+    statement = mDB->GetStatement(
+      "SELECT n.name "
+      "FROM moz_anno_attributes n "
+      "JOIN moz_items_annos a ON a.anno_attribute_id = n.id "
+      "WHERE a.item_id = :item_id"
+    );
+  }
+  else {
+    statement = mDB->GetStatement(
+      "SELECT n.name "
+      "FROM moz_anno_attributes n "
+      "JOIN moz_annos a ON a.anno_attribute_id = n.id "
+      "JOIN moz_places h ON h.id = a.place_id "
+      "WHERE h.url_hash = hash(:page_url) AND h.url = :page_url"
+    );
+  }
+  NS_ENSURE_STATE(statement);
+  mozStorageStatementScoper scoper(statement);
+
+  nsresult rv;
+  if (isItemAnnotation)
+    rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("item_id"), aItemId);
+  else
+    rv = URIBinder::Bind(statement, NS_LITERAL_CSTRING("page_url"), aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasResult = false;
+  while (NS_SUCCEEDED(statement->ExecuteStep(&hasResult)) &&
+         hasResult) {
+    nsAutoCString name;
+    rv = statement->GetUTF8String(0, name);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!_result->AppendElement(name))
+      return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::GetItemAnnotationNames(int64_t aItemId,
+                                            uint32_t* _count,
+                                            nsIVariant*** _result)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_count);
+  NS_ENSURE_ARG_POINTER(_result);
+
+  *_count = 0;
+  *_result = nullptr;
+
+  nsTArray<nsCString> names;
+  nsresult rv = GetAnnotationNamesTArray(nullptr, aItemId, &names);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (names.Length() == 0)
+    return NS_OK;
+
+  *_result = static_cast<nsIVariant**>
+                        (moz_xmalloc(sizeof(nsIVariant*) * names.Length()));
+  NS_ENSURE_TRUE(*_result, NS_ERROR_OUT_OF_MEMORY);
+
+  for (uint32_t i = 0; i < names.Length(); i ++) {
+    nsCOMPtr<nsIWritableVariant> var = new nsVariant();
+    if (!var) {
+      // need to release all the variants we've already created
+      for (uint32_t j = 0; j < i; j ++)
+        NS_RELEASE((*_result)[j]);
+      free(*_result);
+      *_result = nullptr;
+      return NS_ERROR_OUT_OF_MEMORY;
+    }
+    var->SetAsAUTF8String(names[i]);
+    NS_ADDREF((*_result)[i] = var);
+  }
+  *_count = names.Length();
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::PageHasAnnotation(nsIURI* aURI,
+                                       const nsACString& aName,
+                                       bool* _retval)
+{
+  NS_ENSURE_ARG(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsresult rv = HasAnnotationInternal(aURI, 0, aName, _retval);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::ItemHasAnnotation(int64_t aItemId,
+                                       const nsACString& aName,
+                                       bool* _retval)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsresult rv = HasAnnotationInternal(nullptr, aItemId, aName, _retval);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+/**
+ * @note We don't remove anything from the moz_anno_attributes table. If we
+ *       delete the last item of a given name, that item really should go away.
+ *       It will be cleaned up by expiration.
+ */
+nsresult
+nsAnnotationService::RemoveAnnotationInternal(nsIURI* aURI,
+                                              int64_t aItemId,
+                                              const nsACString& aName)
+{
+  bool isItemAnnotation = (aItemId > 0);
+  nsCOMPtr<mozIStorageStatement> statement;
+  if (isItemAnnotation) {
+    statement = mDB->GetStatement(
+      "DELETE FROM moz_items_annos "
+      "WHERE item_id = :item_id "
+        "AND anno_attribute_id = "
+          "(SELECT id FROM moz_anno_attributes WHERE name = :anno_name)"
+    );
+  }
+  else {
+    statement = mDB->GetStatement(
+      "DELETE FROM moz_annos "
+      "WHERE place_id = "
+          "(SELECT id FROM moz_places WHERE url_hash = hash(:page_url) AND url = :page_url) "
+        "AND anno_attribute_id = "
+          "(SELECT id FROM moz_anno_attributes WHERE name = :anno_name)"
+    );
+  }
+  NS_ENSURE_STATE(statement);
+  mozStorageStatementScoper scoper(statement);
+
+  nsresult rv;
+  if (isItemAnnotation)
+    rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("item_id"), aItemId);
+  else
+    rv = URIBinder::Bind(statement, NS_LITERAL_CSTRING("page_url"), aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::RemovePageAnnotation(nsIURI* aURI,
+                                          const nsACString& aName)
+{
+  NS_ENSURE_ARG(aURI);
+
+  nsresult rv = RemoveAnnotationInternal(aURI, 0, aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationRemoved(aURI, aName));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::RemoveItemAnnotation(int64_t aItemId,
+                                          const nsACString& aName,
+                                          uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  nsresult rv = RemoveAnnotationInternal(nullptr, aItemId, aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationRemoved(aItemId, aName, aSource));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::RemovePageAnnotations(nsIURI* aURI)
+{
+  NS_ENSURE_ARG(aURI);
+
+  // Should this be precompiled or a getter?
+  nsCOMPtr<mozIStorageStatement> statement = mDB->GetStatement(
+    "DELETE FROM moz_annos WHERE place_id = "
+      "(SELECT id FROM moz_places WHERE url_hash = hash(:page_url) AND url = :page_url)"
+  );
+  NS_ENSURE_STATE(statement);
+  mozStorageStatementScoper scoper(statement);
+
+  nsresult rv = URIBinder::Bind(statement, NS_LITERAL_CSTRING("page_url"), aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Update observers
+  NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationRemoved(aURI, EmptyCString()));
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::RemoveItemAnnotations(int64_t aItemId,
+                                           uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aItemId, 1);
+
+  // Should this be precompiled or a getter?
+  nsCOMPtr<mozIStorageStatement> statement = mDB->GetStatement(
+    "DELETE FROM moz_items_annos WHERE item_id = :item_id"
+  );
+  NS_ENSURE_STATE(statement);
+  mozStorageStatementScoper scoper(statement);
+
+  nsresult rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("item_id"), aItemId);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = statement->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationRemoved(aItemId, EmptyCString(),
+                                                 aSource));
+
+  return NS_OK;
+}
+
+
+/**
+ * @note If we use annotations for some standard items like GeckoFlags, it
+ *       might be a good idea to blacklist these standard annotations from this
+ *       copy function.
+ */
+NS_IMETHODIMP
+nsAnnotationService::CopyPageAnnotations(nsIURI* aSourceURI,
+                                         nsIURI* aDestURI,
+                                         bool aOverwriteDest)
+{
+  NS_ENSURE_ARG(aSourceURI);
+  NS_ENSURE_ARG(aDestURI);
+
+  mozStorageTransaction transaction(mDB->MainConn(), false);
+
+  nsCOMPtr<mozIStorageStatement> sourceStmt = mDB->GetStatement(
+    "SELECT h.id, n.id, n.name, a2.id "
+    "FROM moz_places h "
+    "JOIN moz_annos a ON a.place_id = h.id "
+    "JOIN moz_anno_attributes n ON n.id = a.anno_attribute_id "
+    "LEFT JOIN moz_annos a2 ON a2.place_id = "
+      "(SELECT id FROM moz_places WHERE url_hash = hash(:dest_url) AND url = :dest_url) "
+                          "AND a2.anno_attribute_id = n.id "
+    "WHERE url = :source_url"
+  );
+  NS_ENSURE_STATE(sourceStmt);
+  mozStorageStatementScoper sourceScoper(sourceStmt);
+
+  nsresult rv = URIBinder::Bind(sourceStmt, NS_LITERAL_CSTRING("source_url"), aSourceURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = URIBinder::Bind(sourceStmt, NS_LITERAL_CSTRING("dest_url"), aDestURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<mozIStorageStatement> copyStmt = mDB->GetStatement(
+    "INSERT INTO moz_annos "
+    "(place_id, anno_attribute_id, content, flags, expiration, "
+     "type, dateAdded, lastModified) "
+    "SELECT (SELECT id FROM moz_places WHERE url_hash = hash(:page_url) AND url = :page_url), "
+           "anno_attribute_id, content, flags, expiration, type, "
+           ":date, :date "
+    "FROM moz_annos "
+    "WHERE place_id = :page_id "
+    "AND anno_attribute_id = :name_id"
+  );
+  NS_ENSURE_STATE(copyStmt);
+  mozStorageStatementScoper copyScoper(copyStmt);
+
+  bool hasResult;
+  while (NS_SUCCEEDED(sourceStmt->ExecuteStep(&hasResult)) && hasResult) {
+    int64_t sourcePlaceId = sourceStmt->AsInt64(0);
+    int64_t annoNameID = sourceStmt->AsInt64(1);
+    nsAutoCString annoName;
+    rv = sourceStmt->GetUTF8String(2, annoName);
+    NS_ENSURE_SUCCESS(rv, rv);
+    int64_t annoExistsOnDest = sourceStmt->AsInt64(3);
+
+    if (annoExistsOnDest) {
+      if (!aOverwriteDest)
+        continue;
+      rv = RemovePageAnnotation(aDestURI, annoName);
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+
+    // Copy the annotation.
+    mozStorageStatementScoper scoper(copyStmt);
+    rv = URIBinder::Bind(copyStmt, NS_LITERAL_CSTRING("page_url"), aDestURI);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), sourcePlaceId);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("name_id"), annoNameID);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("date"), PR_Now());
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = copyStmt->Execute();
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    NOTIFY_ANNOS_OBSERVERS(OnPageAnnotationSet(aDestURI, annoName));
+  }
+
+  rv = transaction.Commit();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::CopyItemAnnotations(int64_t aSourceItemId,
+                                         int64_t aDestItemId,
+                                         bool aOverwriteDest,
+                                         uint16_t aSource)
+{
+  NS_ENSURE_ARG_MIN(aSourceItemId, 1);
+  NS_ENSURE_ARG_MIN(aDestItemId, 1);
+
+  mozStorageTransaction transaction(mDB->MainConn(), false);
+
+  nsCOMPtr<mozIStorageStatement> sourceStmt = mDB->GetStatement(
+    "SELECT n.id, n.name, a2.id "
+    "FROM moz_bookmarks b "
+    "JOIN moz_items_annos a ON a.item_id = b.id "
+    "JOIN moz_anno_attributes n ON n.id = a.anno_attribute_id "
+    "LEFT JOIN moz_items_annos a2 ON a2.item_id = :dest_item_id "
+                                "AND a2.anno_attribute_id = n.id "
+    "WHERE b.id = :source_item_id"
+  );
+  NS_ENSURE_STATE(sourceStmt);
+  mozStorageStatementScoper sourceScoper(sourceStmt);
+
+  nsresult rv = sourceStmt->BindInt64ByName(NS_LITERAL_CSTRING("source_item_id"), aSourceItemId);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = sourceStmt->BindInt64ByName(NS_LITERAL_CSTRING("dest_item_id"), aDestItemId);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<mozIStorageStatement> copyStmt = mDB->GetStatement(
+      "INSERT OR REPLACE INTO moz_items_annos "
+      "(item_id, anno_attribute_id, content, flags, expiration, "
+       "type, dateAdded, lastModified) "
+      "SELECT :dest_item_id, anno_attribute_id, content, flags, expiration, "
+             "type, :date, :date "
+      "FROM moz_items_annos "
+      "WHERE item_id = :source_item_id "
+      "AND anno_attribute_id = :name_id"
+  );
+  NS_ENSURE_STATE(copyStmt);
+  mozStorageStatementScoper copyScoper(copyStmt);
+
+  bool hasResult;
+  while (NS_SUCCEEDED(sourceStmt->ExecuteStep(&hasResult)) && hasResult) {
+    int64_t annoNameID = sourceStmt->AsInt64(0);
+    nsAutoCString annoName;
+    rv = sourceStmt->GetUTF8String(1, annoName);
+    NS_ENSURE_SUCCESS(rv, rv);
+    int64_t annoExistsOnDest = sourceStmt->AsInt64(2);
+
+    if (annoExistsOnDest) {
+      if (!aOverwriteDest)
+        continue;
+      rv = RemoveItemAnnotation(aDestItemId, annoName, aSource);
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+
+    // Copy the annotation.
+    mozStorageStatementScoper scoper(copyStmt);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("dest_item_id"), aDestItemId);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("source_item_id"), aSourceItemId);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("name_id"), annoNameID);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = copyStmt->BindInt64ByName(NS_LITERAL_CSTRING("date"), PR_Now());
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = copyStmt->Execute();
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    NOTIFY_ANNOS_OBSERVERS(OnItemAnnotationSet(aDestItemId, annoName, aSource));
+  }
+
+  rv = transaction.Commit();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::AddObserver(nsIAnnotationObserver* aObserver)
+{
+  NS_ENSURE_ARG(aObserver);
+
+  if (mObservers.IndexOfObject(aObserver) >= 0)
+    return NS_ERROR_INVALID_ARG; // Already registered.
+  if (!mObservers.AppendObject(aObserver))
+    return NS_ERROR_OUT_OF_MEMORY;
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsAnnotationService::RemoveObserver(nsIAnnotationObserver* aObserver)
+{
+  NS_ENSURE_ARG(aObserver);
+
+  if (!mObservers.RemoveObject(aObserver))
+    return NS_ERROR_INVALID_ARG;
+  return NS_OK;
+}
+
+nsresult
+nsAnnotationService::HasAnnotationInternal(nsIURI* aURI,
+                                           int64_t aItemId,
+                                           const nsACString& aName,
+                                           bool* _hasAnno)
+{
+  bool isItemAnnotation = (aItemId > 0);
+  nsCOMPtr<mozIStorageStatement> stmt;
+  if (isItemAnnotation) {
+    stmt = mDB->GetStatement(
+      "SELECT b.id, "
+             "(SELECT id FROM moz_anno_attributes WHERE name = :anno_name) AS nameid, "
+             "a.id, a.dateAdded "
+      "FROM moz_bookmarks b "
+      "LEFT JOIN moz_items_annos a ON a.item_id = b.id "
+                                 "AND a.anno_attribute_id = nameid "
+      "WHERE b.id = :item_id"
+    );
+  }
+  else {
+    stmt = mDB->GetStatement(
+      "SELECT h.id, "
+             "(SELECT id FROM moz_anno_attributes WHERE name = :anno_name) AS nameid, "
+             "a.id, a.dateAdded "
+      "FROM moz_places h "
+      "LEFT JOIN moz_annos a ON a.place_id = h.id "
+                           "AND a.anno_attribute_id = nameid "
+      "WHERE h.url_hash = hash(:page_url) AND h.url = :page_url"
+    );
+  }
+  NS_ENSURE_STATE(stmt);
+  mozStorageStatementScoper checkAnnoScoper(stmt);
+
+  nsresult rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (isItemAnnotation)
+    rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("item_id"), aItemId);
+  else
+    rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasResult;
+  rv = stmt->ExecuteStep(&hasResult);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!hasResult) {
+    // We are trying to get an annotation on an invalid bookmarks or
+    // history entry.
+    // Here we preserve the old behavior, returning that we don't have the
+    // annotation, ignoring the fact itemId is invalid.
+    // Otherwise we should return NS_ERROR_INVALID_ARG, but this will somehow
+    // break the API.  In future we could want to be pickier.
+    *_hasAnno = false;
+  }
+  else {
+    int64_t annotationId = stmt->AsInt64(2);
+    *_hasAnno = (annotationId > 0);
+  }
+
+  return NS_OK;
+}
+
+
+/**
+ * This loads the statement and steps it once so you can get data out of it.
+ *
+ * @note You have to reset the statement when you're done if this succeeds.
+ * @throws NS_ERROR_NOT_AVAILABLE if the annotation is not found.
+ */
+
+nsresult
+nsAnnotationService::StartGetAnnotation(nsIURI* aURI,
+                                        int64_t aItemId,
+                                        const nsACString& aName,
+                                        nsCOMPtr<mozIStorageStatement>& aStatement)
+{
+  bool isItemAnnotation = (aItemId > 0);
+
+  if (isItemAnnotation) {
+    aStatement = mDB->GetStatement(
+      "SELECT a.id, a.item_id, :anno_name, a.content, a.flags, "
+             "a.expiration, a.type "
+      "FROM moz_anno_attributes n "
+      "JOIN moz_items_annos a ON a.anno_attribute_id = n.id "
+      "WHERE a.item_id = :item_id "
+      "AND n.name = :anno_name"
+    );
+  }
+  else {
+    aStatement = mDB->GetStatement(
+      "SELECT a.id, a.place_id, :anno_name, a.content, a.flags, "
+             "a.expiration, a.type "
+      "FROM moz_anno_attributes n "
+      "JOIN moz_annos a ON n.id = a.anno_attribute_id "
+      "JOIN moz_places h ON h.id = a.place_id "
+      "WHERE h.url_hash = hash(:page_url) AND h.url = :page_url "
+        "AND n.name = :anno_name"
+    );
+  }
+  NS_ENSURE_STATE(aStatement);
+  mozStorageStatementScoper getAnnoScoper(aStatement);
+
+  nsresult rv;
+  if (isItemAnnotation)
+    rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("item_id"), aItemId);
+  else
+    rv = URIBinder::Bind(aStatement, NS_LITERAL_CSTRING("page_url"), aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = aStatement->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasResult = false;
+  rv = aStatement->ExecuteStep(&hasResult);
+  if (NS_FAILED(rv) || !hasResult)
+    return NS_ERROR_NOT_AVAILABLE;
+
+  // on success, DON'T reset the statement, the caller needs to read from it,
+  // and it is the caller's job to reset it.
+  getAnnoScoper.Abandon();
+
+  return NS_OK;
+}
+
+
+/**
+ * This does most of the setup work needed to set an annotation, except for
+ * binding the the actual value and executing the statement.
+ * It will either update an existing annotation or insert a new one.
+ *
+ * @note The aStatement RESULT IS NOT ADDREFED.  This is just one of the class
+ *       vars, which control its scope.  DO NOT RELEASE.
+ *       The caller must take care of resetting the statement if this succeeds.
+ */
+nsresult
+nsAnnotationService::StartSetAnnotation(nsIURI* aURI,
+                                        int64_t aItemId,
+                                        const nsACString& aName,
+                                        int32_t aFlags,
+                                        uint16_t aExpiration,
+                                        uint16_t aType,
+                                        nsCOMPtr<mozIStorageStatement>& aStatement)
+{
+  bool isItemAnnotation = (aItemId > 0);
+
+  if (aExpiration == EXPIRE_SESSION) {
+    mHasSessionAnnotations = true;
+  }
+
+  // Ensure the annotation name exists.
+  nsCOMPtr<mozIStorageStatement> addNameStmt = mDB->GetStatement(
+    "INSERT OR IGNORE INTO moz_anno_attributes (name) VALUES (:anno_name)"
+  );
+  NS_ENSURE_STATE(addNameStmt);
+  mozStorageStatementScoper scoper(addNameStmt);
+
+  nsresult rv = addNameStmt->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = addNameStmt->Execute();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // We have to check 2 things:
+  // - if the annotation already exists we should update it.
+  // - we should not allow setting annotations on invalid URIs or itemIds.
+  // This query will tell us:
+  // - whether the item or page exists.
+  // - whether the annotation already exists.
+  // - the nameID associated with the annotation name.
+  // - the id and dateAdded of the old annotation, if it exists.
+  nsCOMPtr<mozIStorageStatement> stmt;
+  if (isItemAnnotation) {
+    stmt = mDB->GetStatement(
+      "SELECT b.id, "
+             "(SELECT id FROM moz_anno_attributes WHERE name = :anno_name) AS nameid, "
+             "a.id, a.dateAdded "
+      "FROM moz_bookmarks b "
+      "LEFT JOIN moz_items_annos a ON a.item_id = b.id "
+                                 "AND a.anno_attribute_id = nameid "
+      "WHERE b.id = :item_id"
+    );
+  }
+  else {
+    stmt = mDB->GetStatement(
+      "SELECT h.id, "
+             "(SELECT id FROM moz_anno_attributes WHERE name = :anno_name) AS nameid, "
+             "a.id, a.dateAdded "
+      "FROM moz_places h "
+      "LEFT JOIN moz_annos a ON a.place_id = h.id "
+                           "AND a.anno_attribute_id = nameid "
+      "WHERE h.url_hash = hash(:page_url) AND h.url = :page_url"
+    );
+  }
+  NS_ENSURE_STATE(stmt);
+  mozStorageStatementScoper checkAnnoScoper(stmt);
+
+  rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("anno_name"), aName);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (isItemAnnotation)
+    rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("item_id"), aItemId);
+  else
+    rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasResult;
+  rv = stmt->ExecuteStep(&hasResult);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!hasResult) {
+    // We are trying to create an annotation on an invalid bookmark
+    // or history entry.
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  int64_t fkId = stmt->AsInt64(0);
+  int64_t nameID = stmt->AsInt64(1);
+  int64_t oldAnnoId = stmt->AsInt64(2);
+  int64_t oldAnnoDate = stmt->AsInt64(3);
+
+  if (isItemAnnotation) {
+    aStatement = mDB->GetStatement(
+      "INSERT OR REPLACE INTO moz_items_annos "
+        "(id, item_id, anno_attribute_id, content, flags, "
+         "expiration, type, dateAdded, lastModified) "
+      "VALUES (:id, :fk, :name_id, :content, :flags, "
+      ":expiration, :type, :date_added, :last_modified)"
+    );
+  }
+  else {
+    aStatement = mDB->GetStatement(
+      "INSERT OR REPLACE INTO moz_annos "
+        "(id, place_id, anno_attribute_id, content, flags, "
+         "expiration, type, dateAdded, lastModified) "
+      "VALUES (:id, :fk, :name_id, :content, :flags, "
+      ":expiration, :type, :date_added, :last_modified)"
+    );
+  }
+  NS_ENSURE_STATE(aStatement);
+  mozStorageStatementScoper setAnnoScoper(aStatement);
+
+  // Don't replace existing annotations.
+  if (oldAnnoId > 0) {
+    rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("id"), oldAnnoId);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("date_added"), oldAnnoDate);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  else {
+    rv = aStatement->BindNullByName(NS_LITERAL_CSTRING("id"));
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("date_added"), RoundedPRNow());
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("fk"), fkId);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("name_id"), nameID);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = aStatement->BindInt32ByName(NS_LITERAL_CSTRING("flags"), aFlags);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = aStatement->BindInt32ByName(NS_LITERAL_CSTRING("expiration"), aExpiration);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = aStatement->BindInt32ByName(NS_LITERAL_CSTRING("type"), aType);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("last_modified"), RoundedPRNow());
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // On success, leave the statement open, the caller will set the value
+  // and execute the statement.
+  setAnnoScoper.Abandon();
+
+  return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// nsIObserver
+
+NS_IMETHODIMP
+nsAnnotationService::Observe(nsISupports *aSubject,
+                             const char *aTopic,
+                             const char16_t *aData)
+{
+  NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
+
+  if (strcmp(aTopic, TOPIC_PLACES_SHUTDOWN) == 0) {
+    // Remove all session annotations, if any.
+    if (mHasSessionAnnotations) {
+      nsCOMPtr<mozIStorageAsyncStatement> pageAnnoStmt = mDB->GetAsyncStatement(
+        "DELETE FROM moz_annos WHERE expiration = :expire_session"
+      );
+      NS_ENSURE_STATE(pageAnnoStmt);
+      nsresult rv = pageAnnoStmt->BindInt32ByName(NS_LITERAL_CSTRING("expire_session"),
+                                                  EXPIRE_SESSION);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      nsCOMPtr<mozIStorageAsyncStatement> itemAnnoStmt = mDB->GetAsyncStatement(
+        "DELETE FROM moz_items_annos WHERE expiration = :expire_session"
+      );
+      NS_ENSURE_STATE(itemAnnoStmt);
+      rv = itemAnnoStmt->BindInt32ByName(NS_LITERAL_CSTRING("expire_session"),
+                                         EXPIRE_SESSION);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      mozIStorageBaseStatement *stmts[] = {
+        pageAnnoStmt.get()
+      , itemAnnoStmt.get()
+      };
+
+      nsCOMPtr<mozIStoragePendingStatement> ps;
+      rv = mDB->MainConn()->ExecuteAsync(stmts, ArrayLength(stmts), nullptr,
+                                         getter_AddRefs(ps));
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+  }
+
+  return NS_OK;
+}