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annotate roundup/instance.py @ 834:568eed5fb4fd

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Optimize Class.find so that the propspec can contain a set of ids to match. This is used by indexer.search so it can do just one find for all the index matches. This was already confusing code, but for common terms (lots of index matches), it is enormously faster.
author Gordon B. McMillan <gmcm@users.sourceforge.net>
date Tue, 09 Jul 2002 21:53:38 +0000
parents bdc2ea127ae9
children 13719594278b 9b910e8d987d
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1 #
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2 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
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3 # This module is free software, and you may redistribute it and/or modify
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4 # under the same terms as Python, so long as this copyright message and
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5 # disclaimer are retained in their original form.
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6 #
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7 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
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8 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
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9 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
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10 # POSSIBILITY OF SUCH DAMAGE.
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11 #
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12 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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13 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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14 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
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15 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
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16 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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17 #
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18 # $Id: instance.py,v 1.5 2001-11-22 15:46:42 jhermann Exp $
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20 __doc__ = '''
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21 Instance handling (open instance).
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23 Currently this module provides one function: open. This function opens
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24 an instance.
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25 '''
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26
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27 import imp, os
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29 class Opener:
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30 def __init__(self):
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31 self.number = 0
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32 self.instances = {}
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34 def open(self, instance_home):
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35 '''Open the instance.
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36
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37 Raise ValueError if the instance home doesn't exist.
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38 '''
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39 if not os.path.exists(instance_home):
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40 raise ValueError, 'no such directory: "%s"'%instance_home
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41 if self.instances.has_key(instance_home):
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42 return imp.load_package(self.instances[instance_home],
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43 instance_home)
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44 self.number = self.number + 1
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45 modname = '_roundup_instance_%s'%self.number
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46 self.instances[instance_home] = modname
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47 return imp.load_package(modname, instance_home)
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49 opener = Opener()
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50 open = opener.open
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52 del Opener
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53 del opener
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56 #
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57 # $Log: not supported by cvs2svn $
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58 # Revision 1.4 2001/11/12 22:01:06 richard
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59 # Fixed issues with nosy reaction and author copies.
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60 #
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61 # Revision 1.3 2001/08/07 00:24:42 richard
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62 # stupid typo
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63 #
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64 # Revision 1.2 2001/08/07 00:15:51 richard
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65 # Added the copyright/license notice to (nearly) all files at request of
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66 # Bizar Software.
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67 #
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68 # Revision 1.1 2001/08/05 07:43:52 richard
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69 # Instances are now opened by a special function that generates a unique
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70 # module name for the instances on import time.
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71 #
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72 #
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73 #
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74 # vim: set filetype=python ts=4 sw=4 et si
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