import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

storage/mozStorageRow.cpp

@@ -0,0 +1,247 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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 "nsString.h"
+
+#include "sqlite3.h"
+#include "mozStoragePrivateHelpers.h"
+#include "Variant.h"
+#include "mozStorageRow.h"
+
+namespace mozilla {
+namespace storage {
+
+////////////////////////////////////////////////////////////////////////////////
+//// Row
+
+nsresult
+Row::initialize(sqlite3_stmt *aStatement)
+{
+  // Get the number of results
+  mNumCols = ::sqlite3_column_count(aStatement);
+
+  // Start copying over values
+  for (uint32_t i = 0; i < mNumCols; i++) {
+    // Store the value
+    nsIVariant *variant = nullptr;
+    int type = ::sqlite3_column_type(aStatement, i);
+    switch (type) {
+      case SQLITE_INTEGER:
+        variant = new IntegerVariant(::sqlite3_column_int64(aStatement, i));
+        break;
+      case SQLITE_FLOAT:
+        variant = new FloatVariant(::sqlite3_column_double(aStatement, i));
+        break;
+      case SQLITE_TEXT:
+      {
+        nsDependentString str(
+          static_cast<const char16_t *>(::sqlite3_column_text16(aStatement, i))
+        );
+        variant = new TextVariant(str);
+        break;
+      }
+      case SQLITE_NULL:
+        variant = new NullVariant();
+        break;
+      case SQLITE_BLOB:
+      {
+        int size = ::sqlite3_column_bytes(aStatement, i);
+        const void *data = ::sqlite3_column_blob(aStatement, i);
+        variant = new BlobVariant(std::pair<const void *, int>(data, size));
+        break;
+      }
+      default:
+        return NS_ERROR_UNEXPECTED;
+    }
+    NS_ENSURE_TRUE(variant, NS_ERROR_OUT_OF_MEMORY);
+
+    // Insert into our storage array
+    NS_ENSURE_TRUE(mData.InsertObjectAt(variant, i), NS_ERROR_OUT_OF_MEMORY);
+
+    // Associate the name (if any) with the index
+    const char *name = ::sqlite3_column_name(aStatement, i);
+    if (!name) break;
+    nsAutoCString colName(name);
+    mNameHashtable.Put(colName, i);
+  }
+
+  return NS_OK;
+}
+
+/**
+ * Note:  This object is only ever accessed on one thread at a time.  It it not
+ *        threadsafe, but it does need threadsafe AddRef and Release.
+ */
+NS_IMPL_ISUPPORTS(
+  Row,
+  mozIStorageRow,
+  mozIStorageValueArray
+)
+
+////////////////////////////////////////////////////////////////////////////////
+//// mozIStorageRow
+
+NS_IMETHODIMP
+Row::GetResultByIndex(uint32_t aIndex,
+                      nsIVariant **_result)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  NS_ADDREF(*_result = mData.ObjectAt(aIndex));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Row::GetResultByName(const nsACString &aName,
+                     nsIVariant **_result)
+{
+  uint32_t index;
+  NS_ENSURE_TRUE(mNameHashtable.Get(aName, &index), NS_ERROR_NOT_AVAILABLE);
+  return GetResultByIndex(index, _result);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// mozIStorageValueArray
+
+NS_IMETHODIMP
+Row::GetNumEntries(uint32_t *_entries)
+{
+  *_entries = mNumCols;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Row::GetTypeOfIndex(uint32_t aIndex,
+                    int32_t *_type)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+
+  uint16_t type;
+  (void)mData.ObjectAt(aIndex)->GetDataType(&type);
+  switch (type) {
+    case nsIDataType::VTYPE_INT32:
+    case nsIDataType::VTYPE_INT64:
+      *_type = mozIStorageValueArray::VALUE_TYPE_INTEGER;
+      break;
+    case nsIDataType::VTYPE_DOUBLE:
+      *_type = mozIStorageValueArray::VALUE_TYPE_FLOAT;
+      break;
+    case nsIDataType::VTYPE_ASTRING:
+      *_type = mozIStorageValueArray::VALUE_TYPE_TEXT;
+      break;
+    case nsIDataType::VTYPE_ARRAY:
+      *_type = mozIStorageValueArray::VALUE_TYPE_BLOB;
+      break;
+    default:
+      *_type = mozIStorageValueArray::VALUE_TYPE_NULL;
+      break;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Row::GetInt32(uint32_t aIndex,
+              int32_t *_value)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  return mData.ObjectAt(aIndex)->GetAsInt32(_value);
+}
+
+NS_IMETHODIMP
+Row::GetInt64(uint32_t aIndex,
+              int64_t *_value)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  return mData.ObjectAt(aIndex)->GetAsInt64(_value);
+}
+
+NS_IMETHODIMP
+Row::GetDouble(uint32_t aIndex,
+               double *_value)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  return mData.ObjectAt(aIndex)->GetAsDouble(_value);
+}
+
+NS_IMETHODIMP
+Row::GetUTF8String(uint32_t aIndex,
+                   nsACString &_value)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  return mData.ObjectAt(aIndex)->GetAsAUTF8String(_value);
+}
+
+NS_IMETHODIMP
+Row::GetString(uint32_t aIndex,
+               nsAString &_value)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  return mData.ObjectAt(aIndex)->GetAsAString(_value);
+}
+
+NS_IMETHODIMP
+Row::GetBlob(uint32_t aIndex,
+             uint32_t *_size,
+             uint8_t **_blob)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+
+  uint16_t type;
+  nsIID interfaceIID;
+  return mData.ObjectAt(aIndex)->GetAsArray(&type, &interfaceIID, _size,
+                                            reinterpret_cast<void **>(_blob));
+}
+
+NS_IMETHODIMP
+Row::GetBlobAsString(uint32_t aIndex, nsAString& aValue)
+{
+  return DoGetBlobAsString(this, aIndex, aValue);
+}
+
+NS_IMETHODIMP
+Row::GetBlobAsUTF8String(uint32_t aIndex, nsACString& aValue)
+{
+  return DoGetBlobAsString(this, aIndex, aValue);
+}
+
+NS_IMETHODIMP
+Row::GetIsNull(uint32_t aIndex,
+               bool *_isNull)
+{
+  ENSURE_INDEX_VALUE(aIndex, mNumCols);
+  NS_ENSURE_ARG_POINTER(_isNull);
+
+  uint16_t type;
+  (void)mData.ObjectAt(aIndex)->GetDataType(&type);
+  *_isNull = type == nsIDataType::VTYPE_EMPTY;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Row::GetSharedUTF8String(uint32_t,
+                         uint32_t *,
+                         char const **)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+Row::GetSharedString(uint32_t,
+                     uint32_t *,
+                     const char16_t **)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+Row::GetSharedBlob(uint32_t,
+                   uint32_t *,
+                   const uint8_t **)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+} // namespace storage
+} // namespace mozilla