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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::DocumentType
* \ingroup datatype
*
* \brief A class describing what can be contained in a document of this type.
*
* A document type can inherit other document types. All document types inherit
* "document" type.
*/
#pragma once
#include "structdatatype.h"
#include <vespa/document/fieldset/fieldsets.h>
#include <vespa/vespalib/stllike/hash_set.h>
#include <map>
#include <set>
namespace document {
class Field;
class DocumentType;
class DocumentType final : public StructuredDataType {
public:
class FieldSet {
public:
using Fields = std::set<vespalib::string>;
FieldSet(const vespalib::string & name, Fields fields,
const DocumentType & doc_type);
FieldSet(const FieldSet&) = default;
FieldSet(FieldSet&&) noexcept = default;
FieldSet& operator=(const FieldSet&) = default;
FieldSet& operator=(FieldSet&&) noexcept = default;
const vespalib::string & getName() const noexcept { return _name; }
const Fields & getFields() const noexcept { return _fields; }
const FieldCollection & asCollection() const { return _field_collection; }
private:
vespalib::string _name;
Fields _fields;
FieldCollection _field_collection;
};
private:
using FieldSetMap = std::map<vespalib::string, FieldSet>;
using ImportedFieldNames = vespalib::hash_set<vespalib::string>;
std::vector<const DocumentType *> _inheritedTypes;
StructDataType::SP _ownedFields;
const StructDataType* _fields;
FieldSetMap _fieldSets;
ImportedFieldNames _imported_field_names;
public:
using UP = std::unique_ptr<DocumentType>;
using SP = std::shared_ptr<DocumentType>;
DocumentType(vespalib::stringref name, int32_t id);
DocumentType(vespalib::stringref name, int32_t id, const StructDataType& fields);
explicit DocumentType(vespalib::stringref name);
DocumentType(vespalib::stringref name, const StructDataType& fields);
DocumentType(const DocumentType &); // TODO remove usage
DocumentType & operator = (const DocumentType &); // TODO remove usage
~DocumentType() override;
const StructDataType& getFieldsType() const noexcept { return *_fields; }
void addField(const Field&);
/**
* Add a documenttype this type inherits from. The order inherited
* types are added decides which parent fields are used if
* multiple parents define the same fields.
*/
void inherit(const DocumentType &docType);
bool isA(const DataType& other) const override;
virtual bool isDocument() const noexcept override { return true; }
const std::vector<const DocumentType *> & getInheritedTypes() const { return _inheritedTypes; };
// Implementation of StructuredDataType
std::unique_ptr<FieldValue> createFieldValue() const override;
void print(std::ostream&, bool verbose, const std::string& indent) const override;
bool equals(const DataType& type) const noexcept override;
uint32_t getFieldCount() const noexcept override {
return _fields->getFieldCount();
}
const Field & getField(vespalib::stringref name) const override;
const Field & getField(int fieldId) const override;
bool hasField(vespalib::stringref name) const noexcept override {
return _fields->hasField(name);
}
bool hasField(int fieldId) const noexcept override {
return _fields->hasField(fieldId);
}
Field::Set getFieldSet() const override;
DocumentType & addFieldSet(const vespalib::string & name, FieldSet::Fields fields);
const FieldSet * getFieldSet(const vespalib::string & name) const;
const FieldSetMap & getFieldSets() const { return _fieldSets; }
const ImportedFieldNames& imported_field_names() const noexcept {
return _imported_field_names;
}
bool has_imported_field_name(const vespalib::string& name) const noexcept;
// Ideally the type would be immutable, but this is how it's built today.
void add_imported_field_name(const vespalib::string& name);
};
} // document
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