Mercurial > p > roundup > code
annotate scripts/schema_diagram.py @ 6414:3dbf1bc5e567
issue2551120 - The sorted method of MultilinkHTMLProperty crashes ...
if the given property is unset for an element of the list.
Crash fixed. New feature NoneFirst added to method to make unset values
sort at start or end of sorted list.
Current testing framework for this code is insuffient for testing
change. Committing without automated test because it solves a crash.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Mon, 17 May 2021 15:25:17 -0400 |
| parents | 23b8e6067f7c |
| children | 9c3ec0a5c7fc |
| rev | line source |
|---|---|
| 1166 | 1 #! /usr/bin/python |
| 2 # | |
| 3 # Schema diagram generator contributed by Stefan Seefeld of the fresco | |
| 4 # project http://www.fresco.org/. | |
| 5 # | |
| 6 # It generates a 'dot file' that is then fed into the 'dot' | |
| 7 # tool (http://www.graphviz.org) to generate a graph: | |
| 8 # | |
| 9 # %> ./schema.py | |
| 10 # %> dot -Tps schema.dot -o schema.ps | |
| 11 # %> gv schema.ps | |
| 12 # | |
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13 from __future__ import print_function |
| 1166 | 14 import sys |
| 15 import roundup.instance | |
| 16 | |
| 17 # open the instance | |
| 18 instance = roundup.instance.open(sys.argv[1]) | |
| 19 db = instance.open() | |
| 20 | |
| 21 # diagram preamble | |
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22 print('digraph schema {') |
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23 print('size="8,6"') |
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24 print('node [shape="record" bgcolor="#ffe4c4" style=filled]') |
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parents:
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25 print('edge [taillabel="1" headlabel="1" dir=back arrowtail=ediamond]') |
| 1166 | 26 |
| 27 # get all the classes | |
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28 types = list(db.classes.keys()) |
| 1166 | 29 |
| 30 # one record node per class | |
| 31 for i in range(len(types)): | |
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32 print('node%d [label=\"{%s|}"]'%(i, types[i])) |
| 1166 | 33 |
| 34 # now draw in the relations | |
| 35 for name in db.classes.keys(): | |
| 36 type = db.classes[name] | |
| 37 attributes = type.getprops() | |
| 38 for a in attributes.keys(): | |
| 39 attribute = attributes[a] | |
| 40 if isinstance(attribute, roundup.hyperdb.Link): | |
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41 print('node%d -> node%d [label=%s]'%(types.index(name), |
| 1166 | 42 types.index(attribute.classname), |
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parents:
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43 a)) |
| 1166 | 44 elif isinstance(attribute, roundup.hyperdb.Multilink): |
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Joseph Myers <jsm@polyomino.org.uk>
parents:
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45 print('node%d -> node%d [taillabel="*" label=%s]'%(types.index(name), |
| 1166 | 46 types.index(attribute.classname), |
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47 a)) |
| 1166 | 48 # all done |
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parents:
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49 print('}') |