[Swift-devel] mappers on files that are inputs and outputs

[Yong Zhao]

This sounds strange, it should be able to map the img and hdr files
correctly to fields atlas.img and atlas.hdr.

Can you enable detailed logging?

Yong.

On Wed, 16 May 2007, Ben Clifford wrote:

>
> Here's a code fragment:
>
>   type volume {
>       imagefile img;
>       headerfile hdr;
>   };
>
>   volume atlas <simple_mapper;prefix="atlas">;
>   atlas = softmean(slices);
>
>   string directions[] = [ "x", "y", "z"];
>
>   foreach direction in directions {
>       giffile outputgif
>           <single_file_mapper;file=@strcat("atlas-",direction,".gif")>;
>       string option = @strcat("-",direction);
>       outputgif = slice_to_gif(atlas, option, ".5");
>   }
>
> When this is run as part of a workflow, there are no atlas.* files and the
> atlas = softmean(slices) line causes atlas.hdr and atlas.img files to be
> created and placed in my working directory, and also used in the
> subsequent slice_to_gif calls.
>
> If I prune the program in a text editor so that the altas = ... line is
> not called, and leave the atlas.hdr and atlas.img files in place in my
> current directory (so that the files are now input files, rather than
> intermediate files), I get this error:
>
>   $ swift -debug -tc.file tc.data play.swift
>   WARN   - Failed to configure log file name
>
>   Swift v0.1-dev
>
>   RunID: mx49u8a36d1m0
>   Execution failed:
>           java.lang.RuntimeException: Data set initialization failed for
>   true. Missing required field: img mapped to atlas
>
>
> I think its probably a desirable feature that the same mapping that maps
> ok for intermediate files to map for input files too.
>
> --
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