/*
 * Copyright (c) 2013 DataTorrent, Inc. ALL Rights Reserved.
 *
 * 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 com.datatorrent.lib.math;

import com.datatorrent.api.BaseOperator;
import com.datatorrent.api.DefaultOutputPort;
import com.datatorrent.api.annotation.OutputPortFieldAnnotation;

/**
 * Abstract base operator defining optional double/float/long/integer output port.
 *  <p>
 *  Common port declaration in operators.
 *
 * @displayName Abstract Output
 * @category Math
 * @tags output operator, multiple datatype
 * @since 0.3.3
 */
public abstract class AbstractOutput extends BaseOperator
{
	/**
	 * Double type output.
	 */
	@OutputPortFieldAnnotation(optional = true)
	public final transient DefaultOutputPort<Double> doubleResult = new DefaultOutputPort<Double>();

	/**
	 * Float type output.
	 */
	@OutputPortFieldAnnotation(optional = true)
	public final transient DefaultOutputPort<Float> floatResult = new DefaultOutputPort<Float>();

	/**
	 * Long type output.
	 */
	@OutputPortFieldAnnotation(optional = true)
	public final transient DefaultOutputPort<Long> longResult = new DefaultOutputPort<Long>();

	/**
	 * Integer type output.
	 */
	@OutputPortFieldAnnotation(optional = true)
	public final transient DefaultOutputPort<Integer> integerResult = new DefaultOutputPort<Integer>();
}