RelationOperation.h

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/*
 * Souffle - A Datalog Compiler
 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved
 * Licensed under the Universal Permissive License v 1.0 as shown at:
 * - https://opensource.org/licenses/UPL
 * - <souffle root>/licenses/SOUFFLE-UPL.txt
 */
 
/************************************************************************
 *
 * @file RelationOperation.h
 *
 ***********************************************************************/
 
#pragma once
 
#include "ram/Node.h"
#include "ram/Operation.h"
#include "ram/Relation.h"
#include "ram/TupleOperation.h"
#include "ram/utility/NodeMapper.h"
#include "souffle/utility/ContainerUtil.h"
#include <cassert>
#include <memory>
#include <string>
#include <utility>
#include <vector>
 
namespace souffle::ram {
 
/**
 * @class RelationOperation
 * @brief Abstract class for operations on relations
 *
 * One such operation is a for loop
 */
class RelationOperation : public TupleOperation {
public:
    RelationOperation(std::string rel, int ident, Own<Operation> nested, std::string profileText = "")
            : TupleOperation(ident, std::move(nested), std::move(profileText)), relation(std::move(rel)) {}
 
    RelationOperation* clone() const override = 0;
 
    /** @brief Get search relation */
    const std::string& getRelation() const {
        return relation;
    }
 
protected:
    bool equal(const Node& node) const override {
        const auto& other = static_cast<const RelationOperation&>(node);
        return TupleOperation::equal(other) && relation == other.relation;
    }
 
    /** Search relation */
    const std::string relation;
};
 
}  // namespace souffle::ram