protected VisitResult VisitProjection(ProjectionOperation operation)
{
var source = Visit(operation.Source);
if (source.ResultSchema.Kind != SchemaNodeKind.Collection)
{
throw new InvalidOperationException("Can only use projection operations on collections");
}
var parameter = Expression.Parameter(source.ElementType, operation.ParameterName);
using (CreateScope(new[] { new FunctionScopeVariable(operation.ParameterName, ((SchemaNodeCollection)source.ResultSchema).ElementSchema, parameter) }))
{
var projection = Visit(operation.Projection);
var lambda = Expression.Lambda(projection.Expression, new[] { parameter });
var arguments = new[] { source.Expression, Expression.Quote(lambda) };
return(new VisitResult
{
ResultSchema = new SchemaNodeCollection(projection.ResultSchema),
Expression = Expression.Call(
null,
typeof(Queryable).GetMethod("Select", arguments.Select(expr => expr.Type).ToArray()),
arguments),
ElementType = projection.Expression.Type,
});
}
}
/// <summary>
/// Adds new file to the report
/// </summary>
/// <param name="filename">Filename</param>
/// <param name="projection">Projection name</param>
/// <param name="operation">Operation that was applied to the file</param>
/// <param name="newName">The new name of the file (in case of reprojection)</param>
public void AddFile(string filename, string projection, ProjectionOperation operation, string newName)
{
string s = operation.ToString();
switch (operation)
{
case ProjectionOperation.AbsenceIgnored:
s = "Absence ignored";
break;
case ProjectionOperation.MismatchIgnored:
s = "Mismatch ignored";
break;
case ProjectionOperation.FailedToReproject:
s = "Failed to reproject";
break;
}
var item = listView1.Items.Add(Path.GetFileName(filename));
item.SubItems.Add(projection == "" ? "none" : projection);
item.SubItems.Add(s);
item.SubItems.Add(Path.GetFileName(newName));
if (operation == ProjectionOperation.Skipped || operation == ProjectionOperation.FailedToReproject)
{
item.SubItems.Add(MapConfig.GdalReprojectionErrorMsg);
}
else
{
item.SubItems.Add("");
}
listView1.Refresh();
ListViewHelper.AutoResizeColumns(listView1);
Application.DoEvents();
}
