internal static Expression Emit_Conditional_NotDBNull(
Expression result,
int ordinal,
Type columnType)
{
result = (Expression) Expression.Condition(CodeGenEmitter.Emit_Reader_IsDBNull(ordinal), (Expression) Expression.Constant(TypeSystem.GetDefaultValue(columnType), columnType), result);
return result;
}
internal static Expression Emit_Reader_IsDBNull(ColumnMap columnMap)
{
return CodeGenEmitter.Emit_Reader_IsDBNull(((ScalarColumnMap) columnMap).ColumnPos);
}
internal static Expression Emit_EntityKey_HasValue(SimpleColumnMap[] keyColumns)
{
return (Expression) Expression.Not(CodeGenEmitter.Emit_Reader_IsDBNull((ColumnMap) keyColumns[0]));
}