public override IRow Process(IRow input, IUpdatableRow output)
{
var img = input.Get <byte[]>("image_data");
// load image only once into memory per row
using (StreamImage inImage = new StreamImage(img))
{
output.SetColumnIfRequested("equipment_make", () => inImage.getStreamImageProperty(ImageProperties.equipment_make));
output.SetColumnIfRequested("equipment_model", () => inImage.getStreamImageProperty(ImageProperties.equipment_model));
output.SetColumnIfRequested("description", () => inImage.getStreamImageProperty(ImageProperties.description));
output.SetColumnIfRequested("copyright", () => inImage.getStreamImageProperty(ImageProperties.copyright));
output.SetColumnIfRequested("thumbnail", () => inImage.scaleStreamImageTo(150, 150));
}
return(output.AsReadOnly());
}
public override IEnumerable <IRow> Extract(IUnstructuredReader input, IUpdatableRow output)
{
foreach (Stream current in input.Split())
{
using (StreamReader streamReader = new StreamReader(current, Encoding.UTF8))
{
string[] array = streamReader.ReadToEnd().Split(new string[] { "\t" }, StringSplitOptions.None);
output.SetColumnIfRequested("UserId", () => Int32.Parse(array[0]));
output.SetColumnIfRequested("Start", () => DateTime.Parse(array[1]));
output.SetColumnIfRequested("Region", () => (array[2]));
output.SetColumnIfRequested("Query", () => (array[3]));
output.SetColumnIfRequested("Duration", () => Int32.Parse(array[4]));
output.SetColumnIfRequested("Urls", () => (array[5]));
output.SetColumnIfRequested("ClickedUrls", () => (array[6]));
}
yield return(output.AsReadOnly());
}
}
public override IEnumerable <IRow> Extract(IUnstructuredReader input, IUpdatableRow output)
{
byte[] img = ImageOps.GetByteArrayforImage(input.BaseStream);
// load image only once into memory per row
using (StreamImage inImage = new StreamImage(img))
{
output.SetColumnIfRequested("image", () => img);
output.SetColumnIfRequested("equipment_make", () => inImage.getStreamImageProperty(ImageProperties.equipment_make));
output.SetColumnIfRequested("equipment_model", () => inImage.getStreamImageProperty(ImageProperties.equipment_model));
output.SetColumnIfRequested("description", () => inImage.getStreamImageProperty(ImageProperties.description));
output.SetColumnIfRequested("copyright", () => inImage.getStreamImageProperty(ImageProperties.copyright));
output.SetColumnIfRequested("thumbnail", () => inImage.scaleStreamImageTo(this._scaleWidth, this._scaleHeight));
}
yield return(output.AsReadOnly());
}