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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 <vespa/vespalib/stllike/string.h>
namespace vespalib::slime { struct Inserter; }
namespace search::docsummary {
class IDocsumStoreDocument;
class GetDocsumsState;
/*
* Abstract class for writing a field in a document summary.
*/
class DocsumFieldWriter
{
public:
DocsumFieldWriter()
: _index(0)
{
}
virtual ~DocsumFieldWriter() = default;
virtual bool isGenerated() const = 0;
virtual void insertField(uint32_t docid, const IDocsumStoreDocument* doc, GetDocsumsState& state, vespalib::slime::Inserter &target) const = 0;
virtual const vespalib::string & getAttributeName() const;
virtual bool isDefaultValue(uint32_t docid, const GetDocsumsState& state) const;
void setIndex(size_t v) { _index = v; }
size_t getIndex() const { return _index; }
virtual bool setFieldWriterStateIndex(uint32_t fieldWriterStateIndex);
private:
size_t _index;
static const vespalib::string _empty;
};
}
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