public static DataPopulator Build(Type entityType)
{
if (entityType == null)
{
throw new ArgumentNullException(nameof(entityType));
}
var properties = entityType
.GetProperties(BindingFlags.Public | BindingFlags.Instance)
.Where(p => p.CanWrite)
.OrderBy(p => p.Name)
.ToArray();
if (properties == null || properties.Length == 0)
{
return(null);
}
var populator = new DataPopulator(entityType)
{
_names = new string[properties.Length],
_setters = new Action <object, IDataRecord, int> [properties.Length],
};
for (int i = 0; i < properties.Length; i++)
{
populator._names[i] = properties[i].Name;
populator._setters[i] = DataEmitter.GenerateSetter(entityType, properties[i]);
}
return(populator);
}
public static void TestReadAssetsWithEmitting(int count, bool outputEnabled = false)
{
var populator = DataPopulator.Build(typeof(Models.Asset));
Stopwatch stopwach = null;
if (outputEnabled)
{
stopwach = new Stopwatch();
stopwach.Restart();
}
using (var reader = GetReader("Asset", count))
{
var entities = populator.Populate(reader);
foreach (var entity in entities)
{
//if(outputEnabled)
// Console.WriteLine(entity);
}
}
if (outputEnabled)
{
stopwach.Stop();
Console.WriteLine($"动态组装 {count} 条数据实体耗时 {stopwach.ElapsedMilliseconds} 毫秒。");
}
}