tor-browser

mozStorageRow.cpp (5990B)

---

/* -*- 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 "mozStorageRow.h"

#include "nsString.h"

#include "sqlite3.h"
#include "mozStoragePrivateHelpers.h"
#include "Variant.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: {
       const char16_t* value = static_cast<const char16_t*>(
           ::sqlite3_column_text16(aStatement, i));
       nsDependentString str(
           value, ::sqlite3_column_bytes16(aStatement, i) / sizeof(char16_t));
       variant = new TextVariant(str);
       break;
     }
     case SQLITE_NULL:
       variant = new NullVariant();
       break;
     case SQLITE_BLOB: {
       const void* data = ::sqlite3_column_blob(aStatement, i);
       int size = ::sqlite3_column_bytes(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.InsertOrUpdate(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 = mData.ObjectAt(aIndex)->GetDataType();
 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 = mData.ObjectAt(aIndex)->GetDataType();
 *_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