import COM.odi.util.OSHashSet;
import COM.odi.util.OSVector;

public class Article{
  // members of Article class
  String title;
  int startPage;
  int endPage;
  String electronicEdition;
  Journal journal;
  Volume volume;
  Numbber numbber;
  OSVector authors;

  // constructor
  public Article(Journal j1, Volume v1,Numbber n1){
    journal = j1;
    volume = v1;
    numbber = n1;
    authors = new OSVector();
  }
  
  // methods of Article class
  // method to add Author to the article
  public void addAuthor(Author author){
    if(authors.contains(author)){
        System.out.println("Author Already Exists  ");
        System.exit(0);
        }
    authors.add(author);
  }

  // method to get the title of the article
  public String getArticleTitle(){
    return title;
    }
  
  // method to get the number of authors of the article
  public int getNumOfAuthors(){
    return authors.size();
    }

  //method to get the journal name 
  public String getJournalName(){
    return journal.getJournalName();
  }

  //method to get the number of the number
  public int getNumbber(){
    return numbber.getNumbber();
  }

  // method to get the volume number
  public int getVolumeNumber(){
    return volume.getVolumeNumber();
  }

  // method to get the collection of authors of the article
  public OSVector getAuthors(){
    return authors;
  }
  // method to get the start page of the article
  public int getStartPage(){
    return startPage;
  }

  // method to get the end page of the article
  public int getEndPage(){
    return endPage;
  }

  //method to get the electronic url of the article
  public String getElectronicUrl(){
    return electronicEdition;
  }

  // method to get the date of the article
  public OSDate getArticleDate(){
    return numbber.getNumberDate();
  }

  // method  the year of the article
  public int getArticleYear(){
    return numbber.getArticleYear();
  }
}