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Revision 1170

Added by Aaron Marcuse-Kubitza almost 13 years ago

join: Added heuristic search for a match on a parent path, so that every XML func suffix of a path doesn't need its own mapping

View differences:

join
34 34 
    writer.writerow(maps.merge_mappings(map_0_cols, map_1_cols))
35 35 
    for row in reader:
36 36 
        if row[1] != '':
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            try: out_row = map_1[row[1]]
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            except KeyError:
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            # Look for a match
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            out_row = None
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            suffix = ''
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            while True:
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                try:
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                    out_row = map_1[row[1]]
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                    break
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                except KeyError:
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                    # Heuristically look for a match on a parent path.
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                    # If this produces a syntactically invalid parent path (e.g.
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                    # there is a / within []), it will be ignored since there
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                    # wouldn't be a an entry in map_1.
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                    row[1], sep, new_suffix = row[1].rpartition('/')
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                    if sep == '': break
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                    suffix = sep+new_suffix+suffix # prepend new suffix
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            # Write new mapping
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            if out_row != None:
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                row = maps.merge_mappings(row, out_row)
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                row[1] += suffix # don't modify out_row!
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            else:
39 58 
                msg = 'No join mapping for '+row[1]
40 59 
                warnings.warn(UserWarning(msg))
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                row[2] = '** '+msg+' ** '+row[2]
42 61 
                row[1] = ''
43 
            else: row = maps.merge_mappings(row, out_row)
44 62 
        writer.writerow(row)
45 63 

  		




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main()


  		












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