/// <summary>
/// Create and object and fill it's mapped properties through a DataRow
/// </summary>
/// <param name="dr">DataRow with columns mapped to the object type</param>
/// <returns>A new instance of the object type with the filled properties</returns>
public T CreateObject <T>(DataRow dr, TarkTypeMapping <T> typeMapping)
{
Type typeT = typeof(T);
var finalObject = (T)Activator.CreateInstance(typeT, new object[] { });
for (int i = 0; i < dr.Table.Columns.Count; i++)
{
SetPropertyValue(finalObject, dr.Table.Columns[i].ColumnName, dr[i], typeMapping);
}
return(finalObject);
}
/// <summary>
/// Create and object and fill it's mapped properties through a DataReader record
/// </summary>
/// <param name="dr">DataReader in the current record with fields mapped to the object type</param>
/// <returns>A new instance of the object type with the filled properties</returns>
private T CreateObject <T>(IDataReader dr, TarkTypeMapping <T> typeMapping, string[] columnNames)
{
var finalObject = (T)Activator.CreateInstance(typeof(T));
object[] values = new object[dr.FieldCount];
dr.GetValues(values);
for (int i = 0; i < dr.FieldCount; i++)
{
SetPropertyValue(finalObject, columnNames[i], values[i], typeMapping);
}
return(finalObject);
}
/// <summary>
/// Fill an object property according it's mapped column name
/// </summary>
/// <param name="obj">object to receive the value</param>
/// <param name="columnName">name of the column mapped to the property</param>
/// <param name="value">value to be filled in the property</param>
/// <exception cref="ArgumentNullException"></exception>
private void SetPropertyValue <T>(T obj, string columnName, object value, TarkTypeMapping <T> typeMapping)
{
TarkColumnMapping columnMapping;
if (!typeMapping.GetPropertiesMapping().TryGetValue(columnName, out columnMapping))
{
return;
}
//2017-05-25: Changed to don't throw exceptions if there is no property for the field
//throw new MissingMemberException(String.Format("Cannot find mapped property for column \"{0}\"",columnName));
if (value == DBNull.Value)
{
return;
}
columnMapping.Property.SetValue(obj,
Convert.ChangeType(value,
columnMapping.GetCachePropertyConvertType(),
CultureInfo.InvariantCulture
)
);
}
