private IDataView ExecutePipeline()
{
if (_preview == null)
{
if (_pipeline != null)
{
try
{
_preview = _pipeline.Execute(_environment);
}
catch (Exception e)
{
_pipelineExecutionException = e;
var fakeColumn = new KeyValuePair <string, ColumnType>("Blank", TextType.Instance);
_preview = new EmptyDataView(_environment, Schema.Create(new SimpleSchema(_environment, fakeColumn)));
}
}
}
return(_preview);
}
private IDataView ExecutePipeline()
{
if (_preview == null)
{
if (_pipeline != null)
{
try
{
_preview = _pipeline.Execute(_environment);
}
catch (Exception e)
{
_pipelineExecutionException = e;
var builder = new SchemaBuilder();
builder.AddColumn("Blank", TextType.Instance);
_preview = new EmptyDataView(_environment, builder.GetSchema());
}
}
}
return(_preview);
}