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annotate scripts/schema_diagram.py @ 5132:0142b4fb5a2d

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issue2550648 - partial fix for problem in this issue. Ezio Melotti reported that the expression editor allowed the user to generate an expression using retired values. To align the expression editor with the simple dropdown search item, retired values are now removed from the expression editor. Do we really want this though? Supposed a keyword is retired and I want to search for an issue with that retired keyword? Do we have a best policy document that says to remove retired keywords from all places it could possibly be used? It could be argued that the simple search dropdown is wrong and should allow selecting retired values.
author John Rouillard <rouilj@ieee.org>
date Fri, 08 Jul 2016 19:31:02 -0400
parents d56b7fc64923
children 64b05e24dbd8
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1 #! /usr/bin/python
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2 #
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3 # Schema diagram generator contributed by Stefan Seefeld of the fresco
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4 # project http://www.fresco.org/.
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5 #
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6 # It generates a 'dot file' that is then fed into the 'dot'
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7 # tool (http://www.graphviz.org) to generate a graph:
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8 #
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9 # %> ./schema.py
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10 # %> dot -Tps schema.dot -o schema.ps
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11 # %> gv schema.ps
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12 #
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13 import sys
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14 import roundup.instance
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15
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16 # open the instance
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17 instance = roundup.instance.open(sys.argv[1])
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18 db = instance.open()
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19
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20 # diagram preamble
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21 print 'digraph schema {'
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22 print 'size="8,6"'
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23 print 'node [shape="record" bgcolor="#ffe4c4" style=filled]'
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24 print 'edge [taillabel="1" headlabel="1" dir=back arrowtail=ediamond]'
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25
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26 # get all the classes
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27 types = db.classes.keys()
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28
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29 # one record node per class
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30 for i in range(len(types)):
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31 print 'node%d [label=\"{%s|}"]'%(i, types[i])
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32
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33 # now draw in the relations
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34 for name in db.classes.keys():
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35 type = db.classes[name]
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36 attributes = type.getprops()
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37 for a in attributes.keys():
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38 attribute = attributes[a]
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39 if isinstance(attribute, roundup.hyperdb.Link):
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40 print 'node%d -> node%d [label=%s]'%(types.index(name),
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41 types.index(attribute.classname),
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42 a)
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43 elif isinstance(attribute, roundup.hyperdb.Multilink):
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44 print 'node%d -> node%d [taillabel="*" label=%s]'%(types.index(name),
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45 types.index(attribute.classname),
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46 a)
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47 # all done
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48 print '}'
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