parquet-column/src/main/java/parquet/column/Dictionary.java

/**
 * Copyright 2012 Twitter, Inc.
 *
 * 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 parquet.column;

import parquet.io.api.Binary;

/**
 * a dictionary to decode dictionary based encodings
 *
 * @author Julien Le Dem
 *
 */
public abstract class Dictionary {

  private final Encoding encoding;

  public Dictionary(Encoding encoding) {
    this.encoding = encoding;
  }

  public Encoding getEncoding() {
    return encoding;
  }

  public abstract int getMaxId();

  public Binary decodeToBinary(int id) {
    throw new UnsupportedOperationException(this.getClass().getName());
  }

  public int decodeToInt(int id) {
    throw new UnsupportedOperationException(this.getClass().getName());
  }

  public long decodeToLong(int id) {
    throw new UnsupportedOperationException(this.getClass().getName());
  }

  public float decodeToFloat(int id) {
    throw new UnsupportedOperationException(this.getClass().getName());
  }

  public double decodeToDouble(int id) {
    throw new UnsupportedOperationException(this.getClass().getName());
  }

  public boolean decodeToBoolean(int id) {
    throw new UnsupportedOperationException(this.getClass().getName());
  }
}