jp.co.yahoo.yosegi.spread.flatten.NotFlattenFunction Maven / Gradle / Ivy

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/**
 * 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 jp.co.yahoo.yosegi.spread.flatten;

import jp.co.yahoo.yosegi.blockindex.BlockIndexNode;
import jp.co.yahoo.yosegi.spread.Spread;

public class NotFlattenFunction implements IFlattenFunction {

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

  @Override
  public Spread flatten( final Spread spread ) {
    return spread;
  }

  @Override
  public String[] getFlattenColumnName( final String linkColumnName ) {
    return new String[0];
  }

  @Override
  public void flattenIndexNode( final BlockIndexNode rootNode ) {}

}