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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 search::attribute {
class CollectionType
{
public:
enum Type : uint8_t {
/**
* Single value type with one value stored for each document.
**/
SINGLE = 0,
/**
* Array type with zero to n values stored for each document.
**/
ARRAY = 1,
/**
* Weighted set type with zero to n unique values stored for each document.
* In addition each unique value is accociated with a weight.
**/
WSET = 2,
MAX_TYPE
};
CollectionType(Type t = SINGLE, bool remove = false, bool create = false) noexcept
: _type(t),
_removeIfZero(remove),
_createIfNonExistant(create)
{ }
explicit
CollectionType(const vespalib::string & t, bool remove = false, bool create = false)
: _type(asType(t)),
_removeIfZero(remove),
_createIfNonExistant(create)
{ }
Type type() const noexcept { return _type; }
bool isMultiValue() const noexcept { return _type != SINGLE; }
bool isWeightedSet() const noexcept { return _type == WSET; }
bool isArray() const noexcept { return _type == ARRAY; }
bool removeIfZero() const noexcept { return _removeIfZero; }
bool createIfNonExistant() const noexcept { return _createIfNonExistant; }
const char * asString() const noexcept { return asString(_type); }
void removeIfZero(bool newValue) noexcept { _removeIfZero = newValue; }
void createIfNonExistant(bool newValue) noexcept { _createIfNonExistant = newValue; }
bool operator!=(const CollectionType &b) const noexcept { return !(operator==(b)); }
bool operator==(const CollectionType &b) const noexcept {
return _type == b._type &&
_removeIfZero == b._removeIfZero &&
_createIfNonExistant == b._createIfNonExistant;
}
private:
struct TypeInfo {
Type _type;
const char * _name;
};
static const char * asString(Type t) noexcept { return _typeTable[t]._name; }
static Type asType(const vespalib::string &t);
Type _type : 4;
bool _removeIfZero : 1;
bool _createIfNonExistant : 1;
static const TypeInfo _typeTable[MAX_TYPE];
};
}
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