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Add read method for data access

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This commit is contained in:
Alatreon 2021-12-05 16:09:23 -08:00
parent 13204721b2
commit 012af8f5d7
2 changed files with 44 additions and 11 deletions
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4
Source Code/TeamHobby.HobbyProjectGenerator.Archive/Contracts/IDataSource.cs
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@ -16,9 +16,9 @@ namespace TeamHobby.HobbyProjectGenerator.Archive
bool WriteData(string cmd);
//Method for deleteing data from a data source, 0 for successful
bool DeleteData();
bool DeleteData(string cmd);
// Method for updating data from a data source, 0 for sucessful
bool UpdateData();
bool UpdateData(string cmd);
}
}

51
Source Code/TeamHobby.HobbyProjectGenerator.Archive/Implementations/SQLSource.cs
View File

@ -12,31 +12,41 @@ namespace TeamHobby.HobbyProjectGenerator.Archive
{
public class SQLSource : IDataSource, IRelationArchivable
{
//private SqlConnection conn;
private SqlConnection conn;
//public SQLSource(string info)
//{
// conn = new SqlConnection(info);
//}
public SQLSource(string info)
{
// Do I put using here to make sure the connection closed once the object is gone?
conn = new SqlConnection(info);
// Perhaps open the connection here?
// conn.Open();
}
public bool DeleteData()
{
throw new NotImplementedException();
}
// Makre sure to Check for instanceof() before casting to a SQLReader in the controller
public Object ReadData(string cmd)
{
try
{
// conn.open();
conn.Open();
//SqlCommand command = new SqlCommand(null, conn);
SqlCommand command = new SqlCommand(cmd, conn);
// conn.Execute();
Console.WriteLine("Access a SQL database");
Console.WriteLine("Select * from archive");
// Execute the command to query the data
using SqlDataReader sqlReader = command.ExecuteReader();
// while (myReader)
// Print to console
// conn.close();
return null;
conn.Close();
return sqlReader;
}
catch (Exception e)
{
@ -45,7 +55,7 @@ namespace TeamHobby.HobbyProjectGenerator.Archive
}
}
public bool UpdateData()
public bool UpdateData(string cmd)
{
throw new NotImplementedException();
}
@ -92,5 +102,28 @@ namespace TeamHobby.HobbyProjectGenerator.Archive
}
}
public Object ReadPreparedStmt(string table){
conn.Open();
//SqlCommand command = new SqlCommand(null, conn);
SqlCommand command = new SqlCommand("SELECT * from @table;", conn);
SqlParameter tableParam = new SqlParameter("@table", System.Data.SqlDbType.Text, 50);
tableParam.Value = table;
command.Parameters.Add(tableParam);
// conn.Execute();
Console.WriteLine("Access a SQL database");
Console.WriteLine("Select * from archive");
// Make the Prepare statement and excute the query:
command.Prepare();
SqlDataReader sqlReader = command.ExecuteReader();
// while (myReader)
// Print to console
// conn.close();
return sqlReader;
}
}
}