core/src/main/java/org/apache/carbondata/core/scan/model/ProjectionDimension.java

/*
 * 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.carbondata.core.scan.model;

import org.apache.carbondata.core.metadata.schema.table.column.CarbonDimension;

/**
 * dimension column which holds the information about the column
 * this is done to avoid heavy object serialization
 */
public class ProjectionDimension extends ProjectionColumn {

  /**
   * actual dimension column
   */
  private CarbonDimension dimension;

  public ProjectionDimension(CarbonDimension dimension) {
    super(dimension.getColName());
    this.dimension = dimension;
  }

  /**
   * @return the dimension
   */
  public CarbonDimension getDimension() {
    return dimension;
  }

  public CarbonDimension getParentDimension() {
    if (null != dimension.getComplexParentDimension()) {
      return dimension.getComplexParentDimension();
    } else {
      throw new RuntimeException("Dimension doesn't have Parent Dimension linked.");
    }
  }

}