mirror of https://gitee.com/bigwinds/arangodb
100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief document update / delete policies
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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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#include "update-policy.h"
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup VocBase
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief initialise a policy object
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////////////////////////////////////////////////////////////////////////////////
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void TRI_InitUpdatePolicy (TRI_doc_update_policy_t* const policy,
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TRI_doc_update_policy_e type,
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TRI_voc_rid_t expectedRid,
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TRI_voc_rid_t* previousRid) {
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policy->_policy = type;
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policy->_expectedRid = expectedRid;
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policy->_previousRid = previousRid;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief compare revision of found document with revision specified in policy
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/// this will also store the actual revision id found in the database in the
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/// context variable _previousRid, but only if this is not NULL
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////////////////////////////////////////////////////////////////////////////////
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int TRI_CheckUpdatePolicy (const TRI_doc_update_policy_t* const policy,
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const TRI_voc_rid_t actualRid) {
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if (policy == NULL) {
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return TRI_ERROR_NO_ERROR;
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}
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// store previous revision
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if (policy->_previousRid != NULL) {
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*(policy->_previousRid) = actualRid;
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}
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// check policy
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switch (policy->_policy) {
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case TRI_DOC_UPDATE_ERROR:
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if (policy->_expectedRid != 0 && policy->_expectedRid != actualRid) {
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return TRI_ERROR_ARANGO_CONFLICT;
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}
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break;
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case TRI_DOC_UPDATE_CONFLICT:
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return TRI_ERROR_NOT_IMPLEMENTED;
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case TRI_DOC_UPDATE_ILLEGAL:
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return TRI_ERROR_INTERNAL;
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case TRI_DOC_UPDATE_LAST_WRITE:
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return TRI_ERROR_NO_ERROR;
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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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/// @}
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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}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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