mirror of https://gitee.com/bigwinds/arangodb
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2016 ArangoDB 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 Simon Grätzer
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////////////////////////////////////////////////////////////////////////////////
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#include <cstddef>
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#include "Basics/Common.h"
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#include <velocypack/Builder.h>
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#include <velocypack/Iterator.h>
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#include <velocypack/velocypack-aliases.h>
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#ifndef ARANGODB_PREGEL_MFORMAT_H
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#define ARANGODB_PREGEL_MFORMAT_H 1
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namespace arangodb {
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namespace pregel {
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template <typename M>
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struct MessageFormat {
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virtual ~MessageFormat() {}
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virtual bool unwrapValue(VPackSlice body, M& value) const = 0;
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virtual void addValue(VPackBuilder& arrayBuilder, M const& val) const = 0;
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};
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struct IntegerMessageFormat : public MessageFormat<int64_t> {
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IntegerMessageFormat() {}
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bool unwrapValue(VPackSlice s, int64_t& value) const override {
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if (s.isInteger()) {
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value = s.getInt();
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return true;
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}
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return false;
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}
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void addValue(VPackBuilder& arrayBuilder, int64_t const& val) const override {
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arrayBuilder.add(VPackValue(val));
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}
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};
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struct FloatMessageFormat : public MessageFormat<float> {
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FloatMessageFormat() {}
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bool unwrapValue(VPackSlice s, float& value) const override {
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if (s.isDouble()) {
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value = s.getDouble();
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return true;
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}
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return false;
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}
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void addValue(VPackBuilder& arrayBuilder, float const& val) const override {
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arrayBuilder.add(VPackValue(val));
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}
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};
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}
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}
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#endif
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