/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.kylin.metadata.expression;

import java.nio.ByteBuffer;
import java.util.Collections;

import org.apache.kylin.metadata.filter.IFilterCodeSystem;
import org.apache.kylin.metadata.tuple.IEvaluatableTuple;

public class NoneTupleExpression extends TupleExpression {

    public NoneTupleExpression() {
        super(ExpressionOperatorEnum.NONE, Collections.<TupleExpression> emptyList());
    }

    @Override
    public boolean ifAbleToPushDown() {
        return false;
    }

    @Override
    public void verify() {
    }

    @Override
    public Object calculate(IEvaluatableTuple tuple, IFilterCodeSystem<?> cs) {
        throw new UnsupportedOperationException();
    }

    @Override
    public TupleExpression accept(ExpressionVisitor visitor) {
        return visitor.visitNone(this);
    }

    @Override
    public void serialize(IFilterCodeSystem<?> cs, ByteBuffer buffer) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void deserialize(IFilterCodeSystem<?> cs, ByteBuffer buffer) {
        throw new UnsupportedOperationException();
    }
}
