//Insert the performance into the db, and generate a new Id for it.
public int Insert()
{
try
{
using (MusicEntities dc = new MusicEntities())
{
//Create a new Id
this.Id = Guid.NewGuid();
//Set the properties
tblPerformancePiece performancePiece = new tblPerformancePiece
{
Id = this.Id,
Notes = this.Notes,
MP3Path = this.MP3Path,
GroupId = this.GroupId,
PerformanceId = this.PerformanceId,
DirectorId = this.DirectorId,
PieceId = this.PieceId
};
//Add it to the table and save changes
dc.tblPerformancePieces.Add(performancePiece);
return(dc.SaveChanges());
}
}
catch (Exception ex)
{
throw ex;
}
}
//Retrieve the performance from the database with this Id
public void LoadById()
{
try
{
using (MusicEntities dc = new MusicEntities())
{
//Retrieve from the db
tblPerformancePiece performancepiece = dc.tblPerformancePieces.FirstOrDefault(p => p.Id == this.Id);
//Set this performancepiece's properties
this.Notes = performancepiece.Notes;
this.MP3Path = performancepiece.MP3Path;
this.GroupId = performancepiece.GroupId != null ? performancepiece.GroupId : Guid.Empty;
this.PieceId = performancepiece.PieceId != null ? performancepiece.PieceId : Guid.Empty;
this.PerformanceId = performancepiece.PerformanceId != null ? performancepiece.PerformanceId : Guid.Empty;
if (performancepiece.DirectorId.HasValue)
{
this.DirectorId = performancepiece.DirectorId.Value;
}
}
}
catch (Exception ex)
{
throw ex;
}
}
public int Update()
{
try
{
using (MusicEntities dc = new MusicEntities())
{
//Retrieve the record from the DB
tblPerformancePiece performancePiece = dc.tblPerformancePieces.FirstOrDefault(c => c.Id == this.Id);
//Update the properties
performancePiece.Notes = this.Notes;
performancePiece.MP3Path = this.MP3Path;
performancePiece.GroupId = this.GroupId;
performancePiece.DirectorId = this.DirectorId;
performancePiece.PieceId = this.PieceId;
performancePiece.PerformanceId = this.PerformanceId;
//Save the changes
return(dc.SaveChanges());
}
}
catch (Exception ex)
{
throw ex;
}
}
public void DeleteTest()
{
using (MusicEntities dc = new MusicEntities())
{
tblPerformancePiece performancepiece = dc.tblPerformancePieces.FirstOrDefault(a => a.Notes == "PL Test");
dc.tblPerformancePieces.Remove(performancepiece);
dc.SaveChanges();
tblPerformancePiece retrievedPerformancePiece = dc.tblPerformancePieces.FirstOrDefault(a => a.Notes == "PL Test");
Assert.IsNull(retrievedPerformancePiece);
}
}
public void UpdateTest()
{
using (MusicEntities dc = new MusicEntities())
{
tblPerformancePiece performancepiece = dc.tblPerformancePieces.FirstOrDefault(a => a.Notes == "PL Test");
performancepiece.MP3Path = "PL Updated Test";
dc.SaveChanges();
tblPerformancePiece retrievedPerformancePiece = dc.tblPerformancePieces.FirstOrDefault(a => a.Notes == "PL Test");
Assert.IsNotNull(retrievedPerformancePiece);
}
}
public int Delete()
{
try
{
using (MusicEntities dc = new MusicEntities())
{
//Retrieve it from the DB
tblPerformancePiece performancePiece = dc.tblPerformancePieces.FirstOrDefault(p => p.Id == this.Id);
//Remove the performance
dc.tblPerformancePieces.Remove(performancePiece);
//Save the changes
return(dc.SaveChanges());
}
}
catch (Exception ex)
{
throw ex;
}
}
public void InsertTest()
{
using (MusicEntities dc = new MusicEntities())
{
tblPerformancePiece performancepiece = new tblPerformancePiece();
performancepiece.Id = Guid.NewGuid();
performancepiece.DirectorId = dc.tblDirectors.FirstOrDefault(p => p.FirstName == "Broderick").Id;
performancepiece.GroupId = dc.tblGroups.FirstOrDefault(p => p.Name == "Jazz Ensemble").Id;
performancepiece.PerformanceId = dc.tblPerformances.FirstOrDefault(p => p.Name == "Spring Concert").Id;
performancepiece.PieceId = dc.tblPieces.FirstOrDefault(p => p.Name == "Rock Music").Id;
performancepiece.Notes = "PL Test";
performancepiece.MP3Path = "PL Test";
dc.tblPerformancePieces.Add(performancepiece);
dc.SaveChanges();
tblPerformancePiece retrievedPerformancePiece = dc.tblPerformancePieces.FirstOrDefault(a => a.Notes == "PL Test");
Assert.AreEqual(performancepiece.Id, retrievedPerformancePiece.Id);
}
}
