/// <summary>
/// Inserts a PetShop.Business.Category object into the datasource using a transaction.
/// </summary>
/// <param name="transactionManager"><see cref="TransactionManager"/> object</param>
/// <param name="entity">PetShop.Business.Category object to insert.</param>
/// <remarks>
/// After inserting into the datasource, the PetShop.Business.Category object will be updated
/// to refelect any changes made by the datasource. (ie: identity or computed columns)
/// </remarks>
/// <returns>Returns true if operation is successful.</returns>
/// <exception cref="System.Exception">The command could not be executed.</exception>
/// <exception cref="System.Data.DataException">The <paramref name="transactionManager"/> is not open.</exception>
/// <exception cref="System.Data.Common.DbException">The command could not be executed.</exception>
public override bool Insert(TransactionManager transactionManager, PetShop.Business.Category entity)
{
SqlDatabase database = new SqlDatabase(this._connectionString);
DbCommand commandWrapper = StoredProcedureProvider.GetCommandWrapper(database, "dbo.Category_Insert", _useStoredProcedure);
database.AddInParameter(commandWrapper, "@CategoryId", DbType.AnsiString, entity.CategoryId);
database.AddInParameter(commandWrapper, "@Name", DbType.AnsiString, entity.Name);
database.AddInParameter(commandWrapper, "@Descn", DbType.AnsiString, entity.Descn);
int results = 0;
//Provider Data Requesting Command Event
OnDataRequesting(new CommandEventArgs(commandWrapper, "Insert", entity));
if (transactionManager != null)
{
results = Utility.ExecuteNonQuery(transactionManager, commandWrapper);
}
else
{
results = Utility.ExecuteNonQuery(database, commandWrapper);
}
entity.OriginalCategoryId = entity.CategoryId;
entity.AcceptChanges();
//Provider Data Requested Command Event
OnDataRequested(new CommandEventArgs(commandWrapper, "Insert", entity));
return(Convert.ToBoolean(results));
}
protected override void DataPortal_Update()
{
bool cancel = false;
OnUpdating(ref cancel);
if (cancel) return;
if(OriginalCategoryId != CategoryId)
{
// Insert new child.
Category item = new Category {CategoryId = CategoryId, Name = Name, Description = Description};
item = item.Save();
// Mark editable child lists as dirty. This code may need to be updated to one-to-one relationships.
foreach(Product itemToUpdate in Products)
{
itemToUpdate.CategoryId = CategoryId;
}
// Create a new connection.
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
FieldManager.UpdateChildren(this, connection);
}
// Delete the old.
var criteria = new CategoryCriteria {CategoryId = OriginalCategoryId};
DataPortal_Delete(criteria);
// Mark the original as the new one.
OriginalCategoryId = CategoryId;
OnUpdated();
return;
}
const string commandText = "UPDATE [dbo].[Category] SET [CategoryId] = @p_CategoryId, [Name] = @p_Name, [Descn] = @p_Descn WHERE [CategoryId] = @p_OriginalCategoryId; SELECT [CategoryId] FROM [dbo].[Category] WHERE [CategoryId] = @p_OriginalCategoryId";
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_OriginalCategoryId", this.OriginalCategoryId);
command.Parameters.AddWithValue("@p_CategoryId", this.CategoryId);
command.Parameters.AddWithValue("@p_Name", ADOHelper.NullCheck(this.Name));
command.Parameters.AddWithValue("@p_Descn", ADOHelper.NullCheck(this.Description));
//result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed.
int result = command.ExecuteNonQuery();
if (result == 0)
throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute.");
LoadProperty(_originalCategoryIdProperty, this.CategoryId);
}
FieldManager.UpdateChildren(this, connection);
}
OnUpdated();
}
private void Child_Update(Category category, SqlConnection connection)
{
bool cancel = false;
OnChildUpdating(category, connection, ref cancel);
if (cancel) return;
if(connection.State != ConnectionState.Open) connection.Open();
const string commandText = "UPDATE [dbo].[Product] SET [ProductId] = @p_ProductId, [CategoryId] = @p_CategoryId, [Name] = @p_Name, [Descn] = @p_Descn, [Image] = @p_Image WHERE [ProductId] = @p_OriginalProductId; SELECT [ProductId] FROM [dbo].[Product] WHERE [ProductId] = @p_OriginalProductId";
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_OriginalProductId", this.OriginalProductId);
command.Parameters.AddWithValue("@p_ProductId", this.ProductId);
command.Parameters.AddWithValue("@p_CategoryId", category != null ? category.CategoryId : this.CategoryId);
command.Parameters.AddWithValue("@p_Name", ADOHelper.NullCheck(this.Name));
command.Parameters.AddWithValue("@p_Descn", ADOHelper.NullCheck(this.Description));
command.Parameters.AddWithValue("@p_Image", ADOHelper.NullCheck(this.Image));
// result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed.
int result = command.ExecuteNonQuery();
if (result == 0)
throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute.");
// Update foreign keys values. This code will update the values passed in from the parent only if no errors occurred after executing the query.
if(category != null && category.CategoryId != this.CategoryId)
LoadProperty(_categoryIdProperty, category.CategoryId);
// Update non-identity primary key value.
LoadProperty(_originalProductIdProperty, this.ProductId);
}
FieldManager.UpdateChildren(this, null, connection);
OnChildUpdated();
}
private void Child_Insert(Category category, SqlConnection connection)
{
bool cancel = false;
OnChildInserting(category, connection, ref cancel);
if (cancel) return;
if(connection.State != ConnectionState.Open) connection.Open();
const string commandText = "INSERT INTO [dbo].[Product] ([ProductId], [CategoryId], [Name], [Descn], [Image]) VALUES (@p_ProductId, @p_CategoryId, @p_Name, @p_Descn, @p_Image)";
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_ProductId", this.ProductId);
command.Parameters.AddWithValue("@p_CategoryId", category != null ? category.CategoryId : this.CategoryId);
command.Parameters.AddWithValue("@p_Name", ADOHelper.NullCheck(this.Name));
command.Parameters.AddWithValue("@p_Descn", ADOHelper.NullCheck(this.Description));
command.Parameters.AddWithValue("@p_Image", ADOHelper.NullCheck(this.Image));
//result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed.
int result = command.ExecuteNonQuery();
if (result == 0)
throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute.");
// Update foreign keys values. This code will update the values passed in from the parent only if no errors occurred after executing the query.
if(category != null && category.CategoryId != this.CategoryId)
LoadProperty(_categoryIdProperty, category.CategoryId);
// Update the original non-identity primary key value.
LoadProperty(_originalProductIdProperty, this.ProductId);
}
// A child relationship exists on this Business Object but its type is not a child type (E.G. EditableChild).
// TODO: Please override OnChildInserted() and insert this child manually.
// FieldManager.UpdateChildren(this, null, connection);
OnChildInserted();
}
