mirror of https://gitee.com/bigwinds/arangodb
136 lines
4.5 KiB
C++
136 lines
4.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief index iterator
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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 Michael Hackstein
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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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#include "IndexIterator.h"
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#include "Basics/StringUtils.h"
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#include "Cluster/ServerState.h"
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#include "Utils/CollectionNameResolver.h"
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using namespace triagens::arango;
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// -----------------------------------------------------------------------------
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// --SECTION-- struct IndexIteratorContext
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief context for an index iterator
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////////////////////////////////////////////////////////////////////////////////
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IndexIteratorContext::IndexIteratorContext (TRI_vocbase_t* vocbase,
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CollectionNameResolver* resolver)
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: vocbase(vocbase),
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resolver(resolver),
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ownsResolver(resolver == nullptr) {
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}
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IndexIteratorContext::IndexIteratorContext (TRI_vocbase_t* vocbase)
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: IndexIteratorContext(vocbase, nullptr) {
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}
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IndexIteratorContext::~IndexIteratorContext () {
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if (ownsResolver) {
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delete resolver;
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}
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}
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CollectionNameResolver const* IndexIteratorContext::getResolver () const {
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if (resolver == nullptr) {
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TRI_ASSERT(ownsResolver);
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resolver = new CollectionNameResolver(vocbase);
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}
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return resolver;
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}
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bool IndexIteratorContext::isCluster () const {
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return triagens::arango::ServerState::instance()->isRunningInCluster();
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}
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int IndexIteratorContext::resolveId (char const* handle,
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TRI_voc_cid_t& cid,
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char const*& key) const {
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char const* p = strchr(handle, TRI_DOCUMENT_HANDLE_SEPARATOR_CHR);
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if (p == nullptr || *p == '\0') {
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return TRI_ERROR_ARANGO_DOCUMENT_HANDLE_BAD;
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}
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if (*handle >= '0' && *handle <= '9') {
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cid = triagens::basics::StringUtils::uint64(handle, p - handle);
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}
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else {
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std::string const name(handle, p - handle);
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cid = getResolver()->getCollectionIdCluster(name);
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}
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if (cid == 0) {
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return TRI_ERROR_ARANGO_COLLECTION_NOT_FOUND;
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}
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key = p + 1;
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return TRI_ERROR_NO_ERROR;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- class IndexIterator
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief default destructor. Does not free anything
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////////////////////////////////////////////////////////////////////////////////
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IndexIterator::~IndexIterator () {
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief default implementation for next
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////////////////////////////////////////////////////////////////////////////////
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TRI_doc_mptr_t* IndexIterator::next () {
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return nullptr;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief default implementation for reset
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////////////////////////////////////////////////////////////////////////////////
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void IndexIterator::reset () {
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}
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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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