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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::ArrayFieldValue
* \ingroup fieldvalue
*
* \brief A representation of an array of fieldvalues of specific types.
*
* A field value representing an array of other fieldvalues of a given type.
*
* \see datatype.h
* \see field.h
*/
#pragma once
#include "collectionfieldvalue.h"
#include <vespa/document/datatype/arraydatatype.h>
#include <vespa/vespalib/util/polymorphicarray.h>
namespace document {
class ArrayFieldValue final : public CollectionFieldValue {
private:
using IArray = vespalib::IArrayT<FieldValue>;
std::unique_ptr<IArray> _array;
bool addValue(const FieldValue&) override;
bool containsValue(const FieldValue& val) const override;
bool removeValue(const FieldValue& val) override;
fieldvalue::ModificationStatus iterateSubset(
int startPos, int endPos, vespalib::stringref variable,
PathRange nested,
fieldvalue::IteratorHandler& handler) const;
fieldvalue::ModificationStatus onIterateNested(PathRange nested, fieldvalue::IteratorHandler & handler) const override;
public:
using const_iterator = IArray::const_iterator;
using iterator = IArray::iterator;
using UP = std::unique_ptr<ArrayFieldValue>;
/**
* @param arrayType Type of the array. Must be an ArrayDataType, but does
* not enforce type compile time so it will be easier to
* create instances using field's getDataType().
*/
ArrayFieldValue(const DataType &arrayType);
ArrayFieldValue(const ArrayFieldValue&);
~ArrayFieldValue();
ArrayFieldValue& operator=(const ArrayFieldValue&);
const FieldValue& operator[](uint32_t index) const { return array()[index]; }
FieldValue& operator[](uint32_t index) { return array()[index]; }
void accept(FieldValueVisitor &visitor) override { visitor.visit(*this); }
void accept(ConstFieldValueVisitor &visitor) const override { visitor.visit(*this); }
void append(FieldValue::UP value) { _array->push_back(*value); }
void remove(uint32_t index);
bool remove(const FieldValue& val) { return removeValue(val); }
bool isEmpty() const override { return _array->empty(); }
size_t size() const override { return _array->size(); }
void clear() override { _array->clear(); }
void reserve(size_t sz) { _array->reserve(sz); }
void resize(size_t sz) { _array->resize(sz); }
FieldValue& assign(const FieldValue&) override;
ArrayFieldValue* clone() const override { return new ArrayFieldValue(*this); }
int compare(const FieldValue&) const override;
void printXml(XmlOutputStream& out) const override;
void print(std::ostream& out, bool verbose, const std::string& indent) const override;
void swap(ArrayFieldValue & other) { _array.swap(other._array); }
// Iterator functionality
const_iterator begin() const { return array().begin(); }
const_iterator end() const { return array().end(); }
private:
iterator begin() { return array().begin(); }
iterator end() { return array().end(); }
const IArray & array() const { return *_array; }
IArray & array() { return *_array; }
};
} // document
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