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annotate roundup/backends/indexer_common.py @ 3076:2817a4db901d

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Change indexer_common.search() to take a list of nodeids... ...instead of a dictionary (with random keys) from getHits(). This removes another Python 2.1 incompatility (using dict() and enumerate()) and removes the need for some code in indexer_rdbms.find().
author Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
date Wed, 05 Jan 2005 22:14:21 +0000
parents 1c063814d567
children 6da931530497
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1 import re
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2
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3 from roundup import hyperdb
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4
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5 def _isLink(propclass):
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6 return (isinstance(propclass, hyperdb.Link) or
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7 isinstance(propclass, hyperdb.Multilink))
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8
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9 class Indexer:
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10 def getHits(self, search_terms, klass):
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11 return self.find(search_terms)
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12
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13 def search(self, search_terms, klass, ignore={}):
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14 '''Display search results looking for [search, terms] associated
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15 with the hyperdb Class "klass". Ignore hits on {class: property}.
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17 "dre" is a helper, not an argument.
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18 '''
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19 # do the index lookup
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20 hits = self.getHits(search_terms, klass)
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21 if not hits:
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22 return {}
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23
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24 designator_propname = {}
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25 for nm, propclass in klass.getprops().items():
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26 if _isLink(propclass):
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27 designator_propname[propclass.classname] = nm
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28
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29 # build a dictionary of nodes and their associated messages
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30 # and files
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31 nodeids = {} # this is the answer
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32 propspec = {} # used to do the klass.find
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33 for propname in designator_propname.values():
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34 propspec[propname] = {} # used as a set (value doesn't matter)
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35 for classname, nodeid, property in hits:
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36 # skip this result if we don't care about this class/property
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37 if ignore.has_key((classname, property)):
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38 continue
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39
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40 # if it's a property on klass, it's easy
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41 if classname == klass.classname:
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42 if not nodeids.has_key(nodeid):
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43 nodeids[nodeid] = {}
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44 continue
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46 # make sure the class is a linked one, otherwise ignore
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47 if not designator_propname.has_key(classname):
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48 continue
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49
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50 # it's a linked class - set up to do the klass.find
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51 linkprop = designator_propname[classname] # eg, msg -> messages
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52 propspec[linkprop][nodeid] = 1
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53
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54 # retain only the meaningful entries
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55 for propname, idset in propspec.items():
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56 if not idset:
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57 del propspec[propname]
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58
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59 # klass.find tells me the klass nodeids the linked nodes relate to
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60 for resid in klass.find(**propspec):
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61 resid = str(resid)
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62 if not nodeids.has_key(id):
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63 nodeids[resid] = {}
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64 node_dict = nodeids[resid]
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65 # now figure out where it came from
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66 for linkprop in propspec.keys():
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67 for nodeid in klass.get(resid, linkprop):
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68 if propspec[linkprop].has_key(nodeid):
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69 # OK, this node[propname] has a winner
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70 if not node_dict.has_key(linkprop):
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71 node_dict[linkprop] = [nodeid]
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72 else:
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73 node_dict[linkprop].append(nodeid)
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74 return nodeids
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