// use ordinals to speed up access to DataReader
// links:
// docLink: http://sql2x.org/documentationLink/327451c3-64a8-4de8-b359-76742d634497
// parameters:
// reader: IDataReader from SQLClient
public void Populate(IDataReader reader, CategoryFindDataOrdinals ordinals)
{
if (!reader.IsDBNull(ordinals.ProductCategoryCode))
{
ProductCategoryCode = reader.GetString(ordinals.ProductCategoryCode);
}
if (!reader.IsDBNull(ordinals.ProductName))
{
ProductName = reader.GetString(ordinals.ProductName);
}
if (!reader.IsDBNull(ordinals.ProductCategoryId))
{
ProductCategoryId = reader.GetGuid(ordinals.ProductCategoryId);
}
if (!reader.IsDBNull(ordinals.ProductId))
{
ProductId = reader.GetGuid(ordinals.ProductId);
}
}
/// <summary>Find categories</summary>
/// <cardinality>Many</cardinality>
public List <CategoryFindData> CategoryFind(string findWhat)
{
var ret = new List <CategoryFindData>();
string sql = @"
select
pc.product_category_code
,p.product_name
,pc.product_category_id
,p.product_id
from product_category as pc
inner join product_category_mapping as pcm on pcm.product_category_id = pc.product_category_id
inner join product as p on p.product_id = pcm.product_id
and p.product_became_id is null
where pc.product_category_code like '%' + @find_what + '%'
or p.product_name like '%' + @find_what + '%'
";
using (var conn = new SqlConnection(ConfigurationManager.AppSettings["Conn"])) {
conn.Open();
using (var command = new SqlCommand(sql, conn)) {
command.Parameters.Add("@find_what", SqlDbType.VarChar, 4).Value = findWhat;
IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);
var ordinals = new CategoryFindDataOrdinals(reader);
while (reader.Read())
{
var data = new CategoryFindData();
data.Populate(reader, ordinals);
ret.Add(data);
}
reader.Close();
}
return(ret);
}
}
