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annotate Framework/Common/NullValue.h @ 186:6fe74f9a516e

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 16 Dec 2020 15:05:19 +0100
parents 4cd7e45b671e
children 3236894320d6
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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22 #pragma once
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24 #include "IValue.h"
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26 #include <Compatibility.h>
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28 namespace OrthancDatabases
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29 {
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30 class NullValue : public IValue
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31 {
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32 public:
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33 virtual ValueType GetType() const ORTHANC_OVERRIDE
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34 {
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35 return ValueType_Null;
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36 }
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37
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38 virtual IValue* Convert(ValueType target) const ORTHANC_OVERRIDE;
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39
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40 virtual std::string Format() const ORTHANC_OVERRIDE
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41 {
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42 return "(null)";
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43 }
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44 };
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45 }