public static List <Author> GetAll()
{
List <Author> allAuthors = new List <Author> {
};
MySqlConnection conn = DB.Connection();
conn.Open();
var cmd = conn.CreateCommand() as MySqlCommand;
cmd.CommandText = @"SELECT * FROM authors;";
MySqlDataReader rdr = cmd.ExecuteReader() as MySqlDataReader;
while (rdr.Read())
{
int authorId = rdr.GetInt32(0);
string authorName = rdr.GetString(1);
Author newAuthor = new Author(authorName);
newAuthor.SetId(authorId);
allAuthors.Add(newAuthor);
}
conn.Close();
if (conn != null)
{
conn.Dispose();
}
return(allAuthors);
}
public static Author Find(int check)
{
Author author = new Author();
MySqlConnection conn = DB.Connection();
conn.Open();
MySqlCommand cmd = conn.CreateCommand() as MySqlCommand;
cmd.CommandText = @"SELECT * FROM authors where id = " + check + ";";
MySqlDataReader rdr = cmd.ExecuteReader() as MySqlDataReader;
//nested if in a while loop to eliminate an error that was saying "Read must be done first"
while (rdr.Read())
{
if (rdr.IsDBNull(0) == false)
{
author.SetId(rdr.GetInt32(0));
author.SetName(rdr.GetString(1));
// author.SetCopies(rdr.Getint(2));
}
}
conn.Close();
if (conn != null)
{
conn.Dispose();
}
return(author);
}
public static Author CheckDuplicate(Author checkAuthor)
{
List <Author> allAuthors = Author.GetAll();
bool isInDB = false;
foreach (Author author in allAuthors)
{
if (author.GetFirstName() == checkAuthor.GetFirstName() && author.GetLastName() == checkAuthor.GetLastName())
{
isInDB = true;
checkAuthor.SetId(author.GetId());
}
}
if (!isInDB)
{
checkAuthor.Save();
}
return(checkAuthor);
}
