/*
 * Copyright 2019-2023 The Polypheny Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.polypheny.db.cypher.expression;

import lombok.Getter;
import org.polypheny.db.algebra.operators.OperatorName;
import org.polypheny.db.cypher.cypher2alg.CypherToAlgConverter.CypherContext;
import org.polypheny.db.cypher.cypher2alg.CypherToAlgConverter.RexType;
import org.polypheny.db.languages.ParserPos;
import org.polypheny.db.rex.RexNode;
import org.polypheny.db.util.Pair;

@Getter
public class CypherComparison extends CypherExpression {

    private final OperatorName operatorName;
    private final CypherExpression left;
    private final CypherExpression right;


    public CypherComparison( ParserPos pos, OperatorName operatorName, CypherExpression left, CypherExpression right ) {
        super( pos );
        this.operatorName = operatorName;
        this.left = left;
        this.right = right;
    }


    @Override
    public Pair<String, RexNode> getRex( CypherContext context, RexType type ) {
        Pair<String, RexNode> namedLeft = left.getRex( context, type );
        Pair<String, RexNode> namedRight = right.getRex( context, type );

        return Pair.of( null, context.getBinaryOperation( operatorName, namedLeft.right, namedRight.right ) );
    }


}
