mirror of https://gitee.com/bigwinds/arangodb
172 lines
6.1 KiB
C++
172 lines
6.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief V8 transaction context
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_UTILS_V8TRANSACTION_CONTEXT_H
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#define TRIAGENS_UTILS_V8TRANSACTION_CONTEXT_H 1
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#include "Basics/Common.h"
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#include <v8.h>
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#include "V8/v8-globals.h"
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#include "Utils/CollectionNameResolver.h"
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#include "Utils/Transaction.h"
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namespace triagens {
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namespace arango {
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template<bool EMBEDDABLE>
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class V8TransactionContext {
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// -----------------------------------------------------------------------------
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// --SECTION-- class V8TransactionContext
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors and destructors
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// -----------------------------------------------------------------------------
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create the context
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////////////////////////////////////////////////////////////////////////////////
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V8TransactionContext ()
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: _v8g(static_cast<TRI_v8_global_t*>(v8::Isolate::GetCurrent()->GetData())) {
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy the context
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////////////////////////////////////////////////////////////////////////////////
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virtual ~V8TransactionContext () {
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// unregisterTransaction();
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief return the resolver
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////////////////////////////////////////////////////////////////////////////////
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inline CollectionNameResolver const* getResolver () const {
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return static_cast<CollectionNameResolver*>(_v8g->_resolver);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief check whether the transaction is embedded
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////////////////////////////////////////////////////////////////////////////////
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static inline bool IsEmbedded () {
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TRI_v8_global_t* v8g = static_cast<TRI_v8_global_t*>(v8::Isolate::GetCurrent()->GetData());
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return (v8g->_currentTransaction != nullptr);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- protected functions
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// -----------------------------------------------------------------------------
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief whether or not the transaction is embeddable
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////////////////////////////////////////////////////////////////////////////////
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inline bool isEmbeddable () const {
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return EMBEDDABLE;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get parent transaction (if any)
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////////////////////////////////////////////////////////////////////////////////
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inline TRI_transaction_t* getParentTransaction () const {
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if (_v8g->_currentTransaction != nullptr) {
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return static_cast<TRI_transaction_t*>(_v8g->_currentTransaction);
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}
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return nullptr;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief register the transaction in the context
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////////////////////////////////////////////////////////////////////////////////
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inline int registerTransaction (TRI_transaction_t* trx) {
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_v8g->_currentTransaction = trx;
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_v8g->_resolver = static_cast<void*>(new CollectionNameResolver(trx->_vocbase));
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return TRI_ERROR_NO_ERROR;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief unregister the transaction from the context
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////////////////////////////////////////////////////////////////////////////////
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inline int unregisterTransaction () {
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_v8g->_currentTransaction = nullptr;
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if (_v8g->_resolver != nullptr) {
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CollectionNameResolver* resolver = static_cast<CollectionNameResolver*>(_v8g->_resolver);
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delete resolver;
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_v8g->_resolver = nullptr;
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}
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return TRI_ERROR_NO_ERROR;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- private variables
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// -----------------------------------------------------------------------------
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private:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief v8 global context
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////////////////////////////////////////////////////////////////////////////////
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TRI_v8_global_t* _v8g;
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};
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}
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}
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#endif
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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