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/*
 * Copyright 2013 the original author or authors.
 *
 * 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 org.springframework.social.twitter.api;

import java.io.Serializable;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

/**
 * A json representation of entities found within twitter status objects.
 * 
 * User: bowen
 * Date: 12/26/11
 */
public class Entities implements Serializable {
	
	private static final long serialVersionUID = 1L;
	
	private List urls = new LinkedList();
	
	private List tags = new LinkedList();
	
	private List mentions = new LinkedList();
	
	private List media = new LinkedList();

	private List tickerSymbols = new LinkedList();

	public Entities(List urls, List tags, List mentions, List media) {
		this.urls = urls;
		this.tags = tags;
		this.mentions = mentions;
		this.media = media;
	}
	
	public Entities(List urls, List tags, List mentions, List media, List tickerSymbols) {
		this(urls, tags, mentions, media);
		this.tickerSymbols = tickerSymbols;
	}

	public List getUrls() {
		if (this.urls == null) {
			return Collections.emptyList();
		}
		return this.urls;
	}
	
	
	public List getHashTags() {
		if (this.tags == null) {
			return Collections.emptyList();
		}
		return this.tags;
	}
	
	
	public List getMentions() {
		if (this.mentions == null) {
			return Collections.emptyList();
		}
		return this.mentions;
	}
	
	
	public List getMedia() {
		if (this.media == null) {
			return Collections.emptyList();
		}
		return this.media;
	}
	
	public List getTickerSymbols() {
		if (this.tickerSymbols == null) {
			return Collections.emptyList();
		}
		return this.tickerSymbols;
	}
	
	public boolean hasUrls() {
		return this.urls != null && !this.urls.isEmpty();
	}
	
	
	public boolean hasTags() {
		return this.tags != null && !this.tags.isEmpty();
	}
	
	
	public boolean hasMentions() {
		return this.mentions != null && !this.mentions.isEmpty();
	}
	
	
	public boolean hasMedia() {
		return this.media != null && !this.media.isEmpty();
	}
	
	public boolean hasTickerSymbols() {
		return this.tickerSymbols != null && !this.tickerSymbols.isEmpty();
	}
	
	@Override
	public boolean equals(Object o) {
		if (this == o) {
			return true;
		}
		if (o == null || getClass() != o.getClass()) {
			return false;
		}
		
		Entities entities = (Entities) o;
		if (media != null ? !media.equals(entities.media) : entities.media != null) {
			return false;
		}
		if (mentions != null ? !mentions.equals(entities.mentions) : entities.mentions != null) {
			return false;
		}
		if (tags != null ? !tags.equals(entities.tags) : entities.tags != null) {
			return false;
		}
		if (urls != null ? !urls.equals(entities.urls) : entities.urls != null) {
			return false;
		}
		if (tickerSymbols != null ? !tickerSymbols.equals(entities.tickerSymbols) : entities.tickerSymbols != null) {
			return false;
		}
		
		return true;
	}
	
	
	@Override
	public int hashCode() {
		int result = urls != null ? urls.hashCode() : 0;
		result = 31 * result + (tags != null ? tags.hashCode() : 0);
		result = 31 * result + (mentions != null ? mentions.hashCode() : 0);
		result = 31 * result + (media != null ? media.hashCode() : 0);
		result = 31 * result + (tickerSymbols != null ? tickerSymbols.hashCode() : 0);
		return result;
	}
}