/// <summary>
/// Selects the specified command.
/// </summary>
/// <param name="command">The command.</param>
/// <returns></returns>
public static DataAccessView <T> Select <T>(string command)
{
Type type = typeof(T);
DbCommandAttribute attribute = ObjectHelper.FindCommand(type, command);
using (DataAccess db = new DataAccess(attribute.CommandText)) {
db.CommandType = attribute.CommandType;
using (IDataReader reader = db.ExecuteReader()) {
return(FetchCollection <T>(reader));
}
}
}
/// <summary>
///
/// </summary>
/// <param name="type"></param>
/// <param name="command"></param>
/// <returns></returns>
public static DbCommandAttribute FindCommand(Type type, string command)
{
DbCommandAttribute commandAttribute = null;
foreach (Attribute attribute in TypeDescriptor.GetAttributes(type))
{
commandAttribute = attribute as DbCommandAttribute;
if (commandAttribute != null && commandAttribute.CommandName == command)
{
return(commandAttribute);
}
}
throw CommandNotExists(command, type);
}
/// <summary>
/// Deletes the specified data object.
/// </summary>
/// <param name="dataObject">The data object.</param>
/// <param name="command">The command.</param>
/// <returns></returns>
public static int Delete <T>(T dataObject, string command)
{
Type type = dataObject.GetType();
DbCommandAttribute attribute =
ObjectHelper.FindCommand(type, command);
using (DataAccess db = new DataAccess(attribute.CommandText)) {
db.CommandType = attribute.CommandType;
foreach (string parameterName in attribute.Parameters)
{
db.AddParameter(parameterName,
ObjectHelper.GetParameterValue(dataObject, parameterName));
}
return(db.ExecuteNonQuery());
}
}
/// <summary>
/// Inserts the specified data object.
/// </summary>
/// <param name="dataObject">The data object.</param>
/// <param name="command">The command.</param>
/// <returns></returns>
public static T Insert <T>(T dataObject, string command)
{
Type type = dataObject.GetType();
DbCommandAttribute attribute = ObjectHelper.FindCommand(type, command);
using (DataAccess db = new DataAccess(attribute.CommandText)) {
db.CommandType = attribute.CommandType;
foreach (string parameterName in attribute.Parameters)
{
db.AddParameter(parameterName,
ObjectHelper.GetParameterValue(dataObject, parameterName));
}
dataObject = db.FetchObject <T>();
}
return(dataObject);
}
