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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vsm/common/document.h>
#include <vespa/vsm/config/vsm-cfif.h>
namespace search::docsummary { class SlimeFillerFilter; }
namespace vsm {
/**
* This class contains the specifications for how to generate a summary field.
**/
class DocsumFieldSpec {
public:
using FieldPath = document::FieldPath;
/**
* This class contains a field id and a field path (to navigate a field value).
**/
class FieldIdentifier {
private:
FieldIdT _id;
FieldPath _path;
public:
FieldIdentifier();
FieldIdentifier(FieldIdT id, FieldPath path);
FieldIdentifier(FieldIdentifier &&) noexcept;
FieldIdentifier & operator=(FieldIdentifier &&) noexcept;
FieldIdentifier(const FieldIdentifier &) = delete;
FieldIdentifier & operator=(const FieldIdentifier &) = delete;
~FieldIdentifier();
FieldIdT getId() const { return _id; }
const FieldPath & getPath() const { return _path; }
};
using FieldIdentifierVector = std::vector<FieldIdentifier>;
private:
bool _struct_or_multivalue; // property of the output field
VsmsummaryConfig::Fieldmap::Command _command;
FieldIdentifier _outputField;
FieldIdentifierVector _inputFields;
std::unique_ptr<search::docsummary::SlimeFillerFilter> _filter;
public:
DocsumFieldSpec();
DocsumFieldSpec(VsmsummaryConfig::Fieldmap::Command command);
DocsumFieldSpec(DocsumFieldSpec&&) noexcept;
~DocsumFieldSpec();
bool is_struct_or_multivalue() const noexcept { return _struct_or_multivalue; }
void set_struct_or_multivalue(bool struct_or_multivalue) { _struct_or_multivalue = struct_or_multivalue; }
/**
* Returns the command specifying how to transform input fields into output summary field.
**/
VsmsummaryConfig::Fieldmap::Command getCommand() const { return _command; }
/**
* Returns whether the input field and output field are identical.
**/
bool hasIdentityMapping() const {
return _inputFields.size() == 1 && _outputField.getId() == _inputFields[0].getId();
}
const FieldIdentifier & getOutputField() const { return _outputField; }
void setOutputField(FieldIdentifier outputField) { _outputField = std::move(outputField); }
const FieldIdentifierVector & getInputFields() const { return _inputFields; }
FieldIdentifierVector & getInputFields() { return _inputFields; }
void set_filter(std::unique_ptr<search::docsummary::SlimeFillerFilter> filter);
const search::docsummary::SlimeFillerFilter *get_filter() const noexcept;
};
}
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