CodeFluent produces either a check for 0 in the method or a check for NULL in the stored procedure - codefluent

Question

My model contains an entity with a numeric Landcode property. The value 0 is a valid value for this property:
<cf:entity name="Land">
<cf:property name="Id" key="true" />
<cf:property name="Landcode" typeName="ushort" nullable="false" usePersistenceDefaultValue="false" />
<cf:method name="LoadByLandcode"
body="LOADONE(ushort landCode) WHERE Landcode = #landcode">
</cf:method>
</cf:entity>
The generated code for the LoadByLandcode method looks like this:
public static Land LoadByLandcode(ushort landCode)
{
if ((landCode == CodeFluentPersistence.DefaultUInt16Value))
{
return null;
}
Land land = new Land();
CodeFluent.Runtime.CodeFluentPersistence persistence = CodeFluentContext.Get(BusinessLayerStoreName).Persistence;
persistence.CreateStoredProcedureCommand(null, "Land", "LoadByLandcode");
persistence.AddParameter("#landCode", landCode);
System.Data.IDataReader reader = null;
try
{
reader = persistence.ExecuteReader();
if ((reader.Read() == true))
{
land.ReadRecord(reader, CodeFluent.Runtime.CodeFluentReloadOptions.Default);
land.EntityState = CodeFluent.Runtime.CodeFluentEntityState.Unchanged;
return land;
}
}
finally
{
if ((reader != null))
{
reader.Dispose();
}
persistence.CompleteCommand();
}
return null;
}
As you can see CodeFluent returns null if the provided landCode parameter is 0. In order to avoid this check I have indicated that the landCode parameter is nullable:
<cf:method name="LoadByLandcode" body="LOADONE(ushort landCode?) WHERE Landcode = #landcode">
</cf:method>
or
<cf:method name="LoadByLandcode" body="LOADONE(ushort landCode) WHERE Landcode = #landcode">
<cf:parameter name="landCode" nullable="true" />
</cf:method>
Now in the BOM the check for 0 has been removed, but in the stored procedure a check for null on the landCode parameter has been added:
CREATE PROCEDURE [dbo].[Land_LoadByLandcode]
(
#landCode [smallint] = NULL
)
AS
SET NOCOUNT ON
IF (#landCode IS NULL)
BEGIN
SELECT DISTINCT [Land].[Land_Id], [Land].[Landcode], ...FROM [Land]
END
ELSE
BEGIN
SELECT DISTINCT [Land].[Land_Id], [Land].[Landcode], ... FROM [Land]
WHERE ([Land].[Landcode] = #landCode)
END
RETURN
I neither want a check for 0 in the BOM nor a check for NULL in the stored procedure. How can I achieve this?

Answer 1

To remove the default value check in the generated BOM, set cfom:checkDefaultValue="false".
<cf:method name="LoadByLandcode" body="LOADONE(ushort landCode) WHERE Landcode = #landcode">
<cf:parameter typeName="ushort" name="landCode" nullable="False" cfom:checkDefaultValue="false" modelNullable="False" usePersistenceDefaultValue="false" />
</cf:method>
If you use the graphical interface:
This generates:
public static Land LoadByLandcode(ushort landCode)
{
Land land = new Land();
CodeFluent.Runtime.CodeFluentPersistence persistence = CodeFluentContext.Get(Constants.StoreName).Persistence;
persistence.CreateStoredProcedureCommand(null, "Land", "LoadByLandcode");
persistence.AddRawParameter("#landCode", landCode);
System.Data.IDataReader reader = null;
try
{
reader = persistence.ExecuteReader();
if ((reader.Read() == true))
{
land.ReadRecord(reader, CodeFluent.Runtime.CodeFluentReloadOptions.Default);
land.EntityState = CodeFluent.Runtime.CodeFluentEntityState.Unchanged;
return land;
}
}
finally
{
if ((reader != null))
{
reader.Dispose();
}
persistence.CompleteCommand();
}
return null;
}
CREATE PROCEDURE [dbo].[Land_LoadByLandcode]
(
#landCode [smallint]
)
AS
SET NOCOUNT ON
SELECT DISTINCT [Land].[Land_Id], [Land].[Land_Landcode]
FROM [Land]
WHERE ([Land].[Land_Landcode] = #landCode)
RETURN
GO