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.stream.api;
  
  import org.apache.hadoop.classification.InterfaceStability;
  
  import com.datatorrent.api.Attribute;
  
  /**
   * Options for the operators in the dag
   *
   * @since 3.5.0
   */
  @InterfaceStability.Evolving
  public interface Option
  {
  
    class Options
    {
      public static Option name(String name)
      {
        return new OpName(name);
      }
  
      public static Option prop(String name, Object value)
      {
        return new PropSetting(name, value);
      }
  
      public static <T> Option attr(Attribute<T> attr, T obj)
      {
        return new AttributeSetting<>(attr, obj);
      }
    }
  
    /**
     * An option used to set the name of the operator
     */
    class OpName implements Option
    {
  
      private String name;
  
      public OpName(String name)
      {
        this.name = name;
      }
  
      public String getName()
      {
        return name;
      }
    }
  
    /**
     * An option used to set the property value of the operator
     */
    class PropSetting implements Option
    {
  
      private String name;
  
      private Object val;
  
      public PropSetting(String name, Object val)
      {
        this.name = name;
        this.val = val;
      }
  
      public String getName()
      {
        return name;
      }
  
      public Object getVal()
      {
        return val;
      }
    }
  
    /**
     * An option used to set the {@link Attribute}
     * @param <T>
     */
    class AttributeSetting<T> implements Option
    {
      private Attribute<T> attr;
  
      private T value;
  
      public AttributeSetting(Attribute<T> attr, T value)
      {
        this.attr = attr;
        this.value = value;
      }
  
      public Attribute<T> getAttr()
      {
        return attr;
      }
  
      public T getValue()
      {
        return value;
      }
    }
  }
  