parquet.column.Dictionary Maven / Gradle / Ivy
/**
* 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());
}
}