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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "attribute_combiner_dfw.h"
#include <vector>
namespace search::attribute { class IAttributeContext; }
namespace search::docsummary {
class DocsumFieldWriterState;
class StructFieldsResolver;
/**
* This class reads values from multiple struct field attributes and inserts them as an array of struct.
*
* Used to write both array of struct fields and map of primitives fields.
*/
class ArrayAttributeCombinerDFW : public AttributeCombinerDFW
{
std::vector<vespalib::string> _fields;
std::vector<vespalib::string> _attributeNames;
bool _is_map_of_scalar;
DocsumFieldWriterState* allocFieldWriterState(search::attribute::IAttributeContext &context, vespalib::Stash &stash, const MatchingElements* matching_elements) const override;
public:
ArrayAttributeCombinerDFW(const vespalib::string &fieldName,
const StructFieldsResolver& fields_resolver,
bool filter_elements,
std::shared_ptr<MatchingElementsFields> matching_elems_fields);
~ArrayAttributeCombinerDFW() override;
};
}
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