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Francrt
Asked: 2020-04-17 23:59:44 +0800 CST 2020-04-17 23:59:44 +0800 CST

LogIn HQL Can you compare an object with two variables?

  • 772

The goal is to do a LogIn through an HQL, I'm currently at this point in the code:

    public boolean LogIn(String nickname, String password){
        boolean inAnswer = false;

            try{
                inAnswer = true;
                this.session = Hibernate.getSessionFactory().getCurrentSession();
                Query login = session.createQuery ("From Usuario usser  "
                            + "where usser.Nickname ='"+nickname+"' & usser.Password ='"+password+"'");

            }catch (Exception e){
                e.printStackTrace();
            }
        return inAnswer;
    }

My question is, can I implement an if/switch inside that try that does a comparison of the nickname and password variables with the login object? Something like:

        if(login.equals(String nickname, String password))
java

1 Answers

  1. Best Answer

    If the variable Query loginyou are using (it will depend on where you import it from) allows you to retrieve the values, you will be able to do what you ask.

    On the other hand, it can always be programmed within the try{} catch(){}addition that allows you to encapsulate/control the errors that may appear during the execution of the code.

    try{

   //Recuperar texto, desde un txt puede dar excepción IOException
   File f = new File( "C:\\texto.txt" ); 
   BufferedReader entrada; 
   entrada = new BufferedReader( new FileReader( f ) ); 

}catch(IOException ioe){
    ioe.printStackTrace();//Te dará información respecto al error
}

    Here the answer to your question: 

    public boolean LogIn(String nickname, String password){
    boolean inAnswer = false;

        try{
            inAnswer = true;
            this.session = Hibernate.getSessionFactory().getCurrentSession();
            Query login = session.createQuery ("From Usuario usser  "
                        + "where usser.Nickname ='"+nickname+"' & usser.Password ='"+password+"'");
            //recuperas la informacion de Query login con los metodos que correspondan
            if(login.getUsserNickname().equals(nickname) &&  
               login.getUsserPassword().equals(password){
               //hacer la logica interna que quieras hacer por ejemplo:
               inAnswer = true;
            }

        }catch (Exception e){
            e.printStackTrace();
        }
    return inAnswer;
}
    • 1