mirror of https://gitee.com/bigwinds/arangodb
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 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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////////////////////////////////////////////////////////////////////////////////
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#include "Aql/BindParameters.h"
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#include "Basics/Exceptions.h"
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#include <velocypack/Builder.h>
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#include <velocypack/Iterator.h>
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#include <velocypack/Slice.h>
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#include <velocypack/Value.h>
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#include <velocypack/velocypack-aliases.h>
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using namespace arangodb::aql;
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/// @brief create a hash value for the bind parameters
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uint64_t BindParameters::hash() const {
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if (_builder == nullptr) {
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return 0xdeadbeef;
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}
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// we can get away with the fast hash function here, as we're only using the
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// hash for quickly checking whether we've seen the same set of parameters
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return _builder->slice().hash();
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}
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/// @brief process the parameters
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void BindParameters::process() {
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if (_processed || _builder == nullptr) {
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return;
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}
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VPackSlice const slice = _builder->slice();
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if (slice.isNone()) {
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return;
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}
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if (!slice.isObject()) {
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THROW_ARANGO_EXCEPTION(TRI_ERROR_QUERY_BIND_PARAMETERS_INVALID);
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}
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for (auto const& it : VPackObjectIterator(slice, false)) {
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std::string const key(it.key.copyString());
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VPackSlice const value(it.value);
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if (value.isNone()) {
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THROW_ARANGO_EXCEPTION_PARAMS(TRI_ERROR_QUERY_BIND_PARAMETER_TYPE, key.c_str());
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}
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if (key[0] == '@' && !value.isString()) {
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// collection bind parameter
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THROW_ARANGO_EXCEPTION_PARAMS(TRI_ERROR_QUERY_BIND_PARAMETER_TYPE, key.c_str());
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}
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_parameters.emplace(std::move(key), std::make_pair(value, false));
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}
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_processed = true;
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}
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/// @brief strip collection name prefixes from the parameters
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/// the values must be a VelocyPack array
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void BindParameters::stripCollectionNames(VPackSlice const& keys,
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std::string const& collectionName,
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VPackBuilder& result) {
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char const* c = collectionName.c_str();
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TRI_ASSERT(keys.isArray());
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result.openArray();
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for (auto const& element : VPackArrayIterator(keys)) {
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if (element.isString()) {
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VPackValueLength l;
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char const* s = element.getString(l);
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auto p = static_cast<char const*>(memchr(s, '/', static_cast<size_t>(l)));
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if (p != nullptr && strncmp(s, c, p - s) == 0) {
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// key begins with collection name + '/', now strip it in place for
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// further comparisons
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result.add(VPackValue(
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std::string(p + 1, static_cast<size_t>(l - static_cast<std::ptrdiff_t>(p - s) - 1))));
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continue;
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}
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}
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result.add(element);
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}
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result.close();
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}
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