protected override void Prepare(JoobContext ctx, Root root)
{
_layer = new SpatialLayer {
Name = _layerName
};
root.OtherSpatialLayers.Add(_layer);
}
protected virtual void Prepare(JoobContext ctx, Root root)
{
}
protected override bool Import(WorkerParameter workParam)
{
var totalLines = workParam.TotalLines;
var enumerator = workParam.Enumerator;
var workBlock = totalLines < 500 ? 5 : totalLines / 100;
try
{
using (var ctx = new JoobContext())
{
using (var tx = ctx.BeginTransaction())
{
ReportProgress(0, "Opening database...");
var root = ctx.FirstInstance <Root>() ?? new Root();
if (!ContinueWork(tx, workParam))
{
return(false);
}
Prepare(ctx, root);
var counter = 0;
ReportProgress(0, "Importing data...");
while (enumerator.MoveNext())
{
if (!ContinueWork(tx, workParam))
{
return(false);
}
var line = enumerator.Current;
if (line.StartsWith("--"))
{
continue;
}
T result;
if (ParseLine(line, root, out result))
{
workParam.ImportedObjects.Add(result);
counter++;
if (counter % workBlock == 0)
{
ReportProgress(counter);
}
}
else
{
workParam.NumIgnored++;
}
}
//Debug.Assert(workParam.ImportedObjects.Count + workParam.NumIgnored == totalLines);
ReportProgress(counter, "Committing changes...");
tx.Commit();
}
}
return(true);
}
catch
{
workParam.ImportedObjects.Clear();
workParam.NumIgnored = totalLines;
return(false);
}
}
