tajo-storage/src/main/java/org/apache/tajo/storage/Appender.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.tajo.storage;

import org.apache.tajo.catalog.statistics.TableStats;

import java.io.Closeable;
import java.io.IOException;

public interface Appender extends Closeable {

  void init() throws IOException;

  void addTuple(Tuple t) throws IOException;
  
  void flush() throws IOException;

  long getEstimatedOutputSize() throws IOException;
  
  void close() throws IOException;

  void enableStats();
  
  TableStats getStats();
}