exception when table field value is null

Justin Li — Wed, 19 Nov 2003 11:13:03 -0000

Thanks for you job. That's gread! And
when I generate code, for field allow null. I write code
like this:
DbTable t = db.AddTable ...
t.AddField( "name", "varchar(20)", false );

if the field name's value is null, exception show.

How can I do?

bug of properties of DataReader

Justin Li — Wed, 19 Nov 2003 11:07:31 -0000

the code like this
private string m_name;

public string Name
{
get
{
return Name;
}
set
{
Name = value;
}
}

I use ver2.4.

Facade Generation v2.4.net

Nathan Lee — Sun, 02 Nov 2003 00:41:52 -0000

This is the code generated from 2.4 and the code from
the CodeProject article.

try
{

MsSqlDatabaseAdaptor msSql = new
MsSqlDatabaseAdaptor(

"Wedding",
"",
"dbo",

"connectionstring"
);

// creating db
Database db =
new Database( msSql );

// add tables
DbTable users =
db.AddTable("User","","User");
DbTable products
= db.AddTable("Product","ex_","Product");
DbTable orders =
db.AddTable("Order","ex_","Order");

// add pk

users.AddPrimaryKey("ID","int");

orders.AddPrimaryKey("ID","int");

products.AddPrimaryKey("ID","int");

// link tables

orders.AddForeignKey( users );

orders.AddForeignKey( products );

// add fields
products.AddField
("Name","nvarchar(50)",true);
products.AddField
("Price","decimal",true);
orders.AddField
("Quantity","int",true);
orders.AddField
("Timestamp","timestamp",true);

// create
generator
CsGenerator cs =
new CsGenerator(
db,

"c:\\dotNet",

"UserQuotes",

"StoredProc"
);
// adding tables
to generate
cs.AddTable
(orders);
cs.AddTable
(products);

// a query
SelectQuery q =
db.CreateQuery();
// adding tables
QueryTable
qusers = q.AddTable(users,"U");
QueryTable
qorders = q.AddTable(orders,"O");
QueryTable
qproducts = q.AddTable(products,"P");

// joining tables
q.Join(qorders,
qusers);
q.Join
(qorders,qproducts);

q.AddField(
FieldExpression.Link(qusers,

users.get_Field("ID")),"UserID" );
q.AddField(
FieldExpression.Link(qproducts,

products.get_Field("Name")),"ProductName" );
q.AddField(
FieldExpression.Link(qproducts,

products.get_Field("Price")),"Price" );
q.AddField(
FieldExpression.Link(qorders,

orders.get_Field("Quantity")),"Quantity" );

cs.AddProcedure(
StoredProcedure.Wrap(q, "GetOrders") );

// generation
cs.Generate();

}
catch(Exception ex)
{
MessageBox.Show
( ex.ToString());
}

Recent changes to bugs

exception when table field value is null

bug of properties of DataReader

Facade Generation v2.4.net