content: /**
   * 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.apex.malhar.contrib.misc.math;
  
  import org.apache.apex.malhar.lib.util.BaseNumberValueOperator;
  
  import com.datatorrent.api.DefaultInputPort;
  import com.datatorrent.api.DefaultOutputPort;
  import com.datatorrent.api.annotation.OperatorAnnotation;
  
  /**
   * This operator adds all the values on "numerator" and "denominator" and emits quotient at end of window.
   * <p>
   * <br>
   * <b>StateFull : Yes </b>, Sum of values is taken over application window. <br>
   * <b>Partitions : No </b>, will yield wrong results, since values are
   * accumulated over application window. <br>
   * <br>
   * <b>Ports</b>:<br>
   * <b>numerator</b>: expects V extends Number<br>
   * <b>denominator</b>: expects V extends Number<br>
   * <b>quotient</b>: emits Double<br>
   * <br>
   * <b>Properties : </b> <br>
   * <b>mult_by : </b>Multiply by value(default = 1). <br>
   * <br>
   * @displayName Quotient
   * @category Math
   * @tags division, sum, numeric
   * @since 0.3.3
   * @deprecated
   */
  @Deprecated
  @OperatorAnnotation(partitionable = false)
  public class Quotient<V extends Number> extends BaseNumberValueOperator<V>
  {
    protected double nval = 0.0;
    protected double dval = 0.0;
    int mult_by = 1;
  
    /**
     * Numerator values input port.
     */
    public final transient DefaultInputPort<V> numerator = new DefaultInputPort<V>()
    {
      /**
       * Adds to the numerator value
       */
      @Override
      public void process(V tuple)
      {
        nval += tuple.doubleValue();
      }
    };
  
    /**
     * Denominator values input port.
     */
    public final transient DefaultInputPort<V> denominator = new DefaultInputPort<V>()
    {
      /**
       * Adds to the denominator value
       */
      @Override
      public void process(V tuple)
      {
        dval += tuple.doubleValue();
      }
    };
  
    /**
     * Quotient output port.
     */
    public final transient DefaultOutputPort<V> quotient = new DefaultOutputPort<V>();
  
    public void setMult_by(int i)
    {
      mult_by = i;
    }
  
    /**
     * Generates tuple emits it as long as denominator is not 0. Clears internal
     * data
     */
    @Override
    public void endWindow()
    {
      if (dval == 0) {
        return;
      }
      double val = (nval / dval) * mult_by;
      quotient.emit(getValue(val));
      nval = 0.0;
      dval = 0.0;
    }
  }
  