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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* @class document::ClearValueUpdate
* @ingroup document
*
* @brief Represents an update that clears the content of a field value.
*/
#pragma once
#include "valueupdate.h"
namespace document {
class ClearValueUpdate final : public ValueUpdate {
ACCEPT_UPDATE_VISITOR;
public:
ClearValueUpdate(const ClearValueUpdate& update) = delete;
ClearValueUpdate &operator=(const ClearValueUpdate &rhs) = delete;
ClearValueUpdate() : ValueUpdate(Clear) {}
bool operator==(const ValueUpdate& other) const override;
void checkCompatibility(const Field& field) const override;
bool applyTo(FieldValue& value) const override;
void printXml(XmlOutputStream& xos) const override;
void print(std::ostream& out, bool verbose, const std::string& indent) const override;
void deserialize(const DocumentTypeRepo& repo, const DataType& type, nbostream& buffer) override;
};
}
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