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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* @class document::AssignValueUpdate
* @ingroup document
*
* @brief Represents an update that specifies an assignment of a value to a
* field, completely overwriting the previous value.
*
* Note that for multi-value types, the entire collection is overwritten with a
* new collection.
*/
#pragma once
#include "valueupdate.h"
#include <vespa/document/fieldvalue/fieldvalue.h>
namespace document {
class AssignValueUpdate final : public ValueUpdate {
std::unique_ptr<FieldValue> _value;
ACCEPT_UPDATE_VISITOR;
public:
AssignValueUpdate();
explicit AssignValueUpdate(std::unique_ptr<FieldValue> value);
AssignValueUpdate(const AssignValueUpdate& value) = delete;
AssignValueUpdate & operator=(const AssignValueUpdate& value) = delete;
~AssignValueUpdate() override;
bool operator==(const ValueUpdate& other) const override;
bool hasValue() const { return bool(_value); }
const FieldValue& getValue() const { return *_value; }
AssignValueUpdate& setValue(const FieldValue* value) {
_value.reset(value ? value->clone() : 0);
return *this;
}
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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