/*
 * Seldon -- open source prediction engine
 * =======================================
 * Copyright 2011-2015 Seldon Technologies Ltd and Rummble Ltd (http://www.seldon.io/)
 *
 **********************************************************************************************
 *
 * 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 io.seldon.stream.itemsim;

import java.util.HashSet;
import java.util.Set;

public class UserInteraction {

	Set<Long> interactions = new HashSet<>();
	
	public UserInteraction() {}
	
	public UserInteraction(Long item)
	{
		interactions.add(item);
	}
	
	public UserInteraction add(UserInteraction other)
	{
		this.interactions.addAll(other.interactions);
		return this;
	}

	@Override
	public String toString() {
		return "UserInteraction [interactions=" + interactions + "]";
	}
	
	
	
}