mirror of https://gitee.com/bigwinds/arangodb
128 lines
4.8 KiB
C++
128 lines
4.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief V8 collection name resolver guard
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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 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 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 ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_UTILS_V8RESOLVER_GUARD_H
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#define ARANGODB_UTILS_V8RESOLVER_GUARD_H 1
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#include "Basics/Common.h"
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#include "Utils/CollectionNameResolver.h"
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#include "Utils/V8TransactionContext.h"
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#include "VocBase/vocbase.h"
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#include "V8/v8-globals.h"
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#include <v8.h>
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namespace triagens {
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namespace arango {
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class V8ResolverGuard {
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// -----------------------------------------------------------------------------
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// --SECTION-- class V8ResolverGuard
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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 guard
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////////////////////////////////////////////////////////////////////////////////
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V8ResolverGuard (TRI_vocbase_t* vocbase)
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: _v8g(static_cast<TRI_v8_global_t*>(v8::Isolate::GetCurrent()->GetData(V8DataSlot))),
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_ownResolver(false) {
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if (! static_cast<V8TransactionContext*>(_v8g->_transactionContext)->hasResolver()) {
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static_cast<V8TransactionContext*>(_v8g->_transactionContext)->setResolver(new CollectionNameResolver(vocbase));
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_ownResolver = true;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy the guard
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////////////////////////////////////////////////////////////////////////////////
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~V8ResolverGuard () {
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if (_ownResolver && static_cast<V8TransactionContext*>(_v8g->_transactionContext)->hasResolver()) {
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static_cast<V8TransactionContext*>(_v8g->_transactionContext)->deleteResolver();
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}
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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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TRI_ASSERT_EXPENSIVE(static_cast<V8TransactionContext*>(_v8g->_transactionContext)->hasResolver());
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return static_cast<V8TransactionContext*>(_v8g->_transactionContext)->getResolver();
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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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/// @brief whether or not we are responsible for the resolver
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////////////////////////////////////////////////////////////////////////////////
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bool _ownResolver;
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};
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}
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}
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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