org.apache.zeppelin.jdbc.hive.ProgressBar 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 org.apache.zeppelin.jdbc.hive;

import org.apache.hive.jdbc.HiveStatement;
import org.apache.hive.jdbc.logs.InPlaceUpdateStream;

import java.io.OutputStream;
import java.io.PrintStream;

/**
 * This class is only created for hive >= 2.3 where progress bar is supported.
 */
public class ProgressBar {
  private InPlaceUpdateStream.EventNotifier eventNotifier;
  private BeelineInPlaceUpdateStream beelineInPlaceUpdateStream;

  public ProgressBar() {
    this.eventNotifier = new InPlaceUpdateStream.EventNotifier();
  }

  public void operationLogShowedToUser() {
    this.eventNotifier.operationLogShowedToUser();
  }

  public BeelineInPlaceUpdateStream getInPlaceUpdateStream(OutputStream out) {
    beelineInPlaceUpdateStream = new BeelineInPlaceUpdateStream(
            new PrintStream(out),
            eventNotifier
    );
    return beelineInPlaceUpdateStream;
  }

  public BeelineInPlaceUpdateStream getBeelineInPlaceUpdateStream() {
    return beelineInPlaceUpdateStream;
  }

  public void setInPlaceUpdateStream(HiveStatement hiveStmt, OutputStream out){
    hiveStmt.setInPlaceUpdateStream(this.getInPlaceUpdateStream(out));
  }
}