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annotate roundup/backends/indexer_common.py @ 6438:b671ed2b49b2

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2551143: Problem with installing external trackers ... the change from distutils to setuptools moved the directories for the templates, man pages and docs under the install directory. The install directory is buried in the directory tree under /usr/ib/python/.../roundup...egg/... This patch tries to put them under: the directory specified by --prefix argument the python platform library prefix that prefixes /lib in sysconfig.getpath('platlib') the directory returned by sys.prefix.
author John Rouillard <rouilj@ieee.org>
date Sat, 19 Jun 2021 14:22:36 -0400
parents 9d209d2b34ae
children 91ab3e0ffcd0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 STOPWORDS = [
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6 "A", "AND", "ARE", "AS", "AT", "BE", "BUT", "BY",
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7 "FOR", "IF", "IN", "INTO", "IS", "IT",
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8 "NO", "NOT", "OF", "ON", "OR", "SUCH",
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9 "THAT", "THE", "THEIR", "THEN", "THERE", "THESE",
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10 "THEY", "THIS", "TO", "WAS", "WILL", "WITH"
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11 ]
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12
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13 def _isLink(propclass):
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14 return (isinstance(propclass, hyperdb.Link) or
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15 isinstance(propclass, hyperdb.Multilink))
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16
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17 class Indexer:
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18 def __init__(self, db):
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19 self.stopwords = set(STOPWORDS)
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20 for word in db.config[('main', 'indexer_stopwords')]:
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21 self.stopwords.add(word)
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22 # Do not index anything longer than 25 characters since that'll be
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23 # gibberish (encoded text or somesuch) or shorter than 2 characters
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24 self.minlength = 2
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25 self.maxlength = 25
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26 self.language = db.config[('main','indexer_language')]
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27
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28 def is_stopword(self, word):
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29 return word in self.stopwords
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30
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31 def getHits(self, search_terms, klass):
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32 return self.find(search_terms)
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33
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34 def search(self, search_terms, klass, ignore={}):
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35 """Display search results looking for [search, terms] associated
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36 with the hyperdb Class "klass". Ignore hits on {class: property}.
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37 """
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38 # do the index lookup
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39 hits = self.getHits(search_terms, klass)
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40 if not hits:
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41 return {}
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42
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43 designator_propname = {}
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44 for nm, propclass in klass.getprops().items():
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45 if _isLink(propclass):
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46 designator_propname.setdefault(propclass.classname,
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47 []).append(nm)
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48
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49 # build a dictionary of nodes and their associated messages
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50 # and files
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51 nodeids = {} # this is the answer
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52 propspec = {} # used to do the klass.find
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53 for l in designator_propname.values():
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54 for propname in l:
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55 propspec[propname] = {} # used as a set (value doesn't matter)
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56
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57 # don't unpack hits entries as sqlite3's Row can't be unpacked :(
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58 for entry in hits:
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59 # skip this result if we don't care about this class/property
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60 classname = entry[0]
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61 property = entry[2]
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62 if (classname, property) in ignore:
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63 continue
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64
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65 # if it's a property on klass, it's easy
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66 # (make sure the nodeid is str() not unicode() as returned by some
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67 # backends as that can cause problems down the track)
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68 nodeid = str(entry[1])
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69 if classname == klass.classname:
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70 if nodeid not in nodeids:
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71 nodeids[nodeid] = {}
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72 continue
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73
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74 # make sure the class is a linked one, otherwise ignore
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75 if classname not in designator_propname:
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76 continue
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77
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78 # it's a linked class - set up to do the klass.find
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79 for linkprop in designator_propname[classname]:
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80 propspec[linkprop][nodeid] = 1
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81
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82 # retain only the meaningful entries
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83 for propname, idset in list(propspec.items()):
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84 if not idset:
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85 del propspec[propname]
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86
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87 # klass.find tells me the klass nodeids the linked nodes relate to
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88 propdefs = klass.getprops()
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89 for resid in klass.find(**propspec):
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90 resid = str(resid)
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91 if resid in nodeids:
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92 continue # we ignore duplicate resids
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93 nodeids[resid] = {}
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94 node_dict = nodeids[resid]
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95 # now figure out where it came from
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96 for linkprop in propspec:
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97 v = klass.get(resid, linkprop)
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98 # the link might be a Link so deal with a single result or None
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99 if isinstance(propdefs[linkprop], hyperdb.Link):
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100 if v is None: continue
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101 v = [v]
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102 for nodeid in v:
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103 if nodeid in propspec[linkprop]:
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104 # OK, this node[propname] has a winner
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105 if linkprop not in node_dict:
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106 node_dict[linkprop] = [nodeid]
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107 else:
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108 node_dict[linkprop].append(nodeid)
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109 return nodeids
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110
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111 def get_indexer(config, db):
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112 indexer_name = getattr(config, "INDEXER", "")
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113 if not indexer_name:
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114 # Try everything
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115 try:
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116 from .indexer_xapian import Indexer
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117 return Indexer(db)
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118 except ImportError:
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119 pass
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120
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121 try:
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122 from .indexer_whoosh import Indexer
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123 return Indexer(db)
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124 except ImportError:
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125 pass
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126
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127 indexer_name = "native" # fallback to native full text search
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128
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129 if indexer_name == "xapian":
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130 from .indexer_xapian import Indexer
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131 return Indexer(db)
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132
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133 if indexer_name == "whoosh":
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134 from .indexer_whoosh import Indexer
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135 return Indexer(db)
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136
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137 if indexer_name == "native":
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138 # load proper native indexing based on database type
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139 if db.dbtype == "anydbm":
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140 from roundup.backends.indexer_dbm import Indexer
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141 return Indexer(db)
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142
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143 if db.dbtype in ("sqlite", "postgres", "mysql"):
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144 from roundup.backends.indexer_rdbms import Indexer
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145 return Indexer(db)
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146
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147 raise AssertionError("Invalid indexer: %r" %(indexer_name))
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148
Roundup Issue Tracker: http://roundup-tracker.org/