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- ##############################################################################
- #
- # Zope Public License (ZPL) Version 1.0
- # -------------------------------------
- #
- # Copyright (c) Digital Creations. All rights reserved.
- #
- # This license has been certified as Open Source(tm).
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions are
- # met:
- #
- # 1. Redistributions in source code must retain the above copyright
- # notice, this list of conditions, and the following disclaimer.
- #
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions, and the following disclaimer in
- # the documentation and/or other materials provided with the
- # distribution.
- #
- # 3. Digital Creations requests that attribution be given to Zope
- # in any manner possible. Zope includes a "Powered by Zope"
- # button that is installed by default. While it is not a license
- # violation to remove this button, it is requested that the
- # attribution remain. A significant investment has been put
- # into Zope, and this effort will continue if the Zope community
- # continues to grow. This is one way to assure that growth.
- #
- # 4. All advertising materials and documentation mentioning
- # features derived from or use of this software must display
- # the following acknowledgement:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # In the event that the product being advertised includes an
- # intact Zope distribution (with copyright and license included)
- # then this clause is waived.
- #
- # 5. Names associated with Zope or Digital Creations must not be used to
- # endorse or promote products derived from this software without
- # prior written permission from Digital Creations.
- #
- # 6. Modified redistributions of any form whatsoever must retain
- # the following acknowledgment:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # Intact (re-)distributions of any official Zope release do not
- # require an external acknowledgement.
- #
- # 7. Modifications are encouraged but must be packaged separately as
- # patches to official Zope releases. Distributions that do not
- # clearly separate the patches from the original work must be clearly
- # labeled as unofficial distributions. Modifications which do not
- # carry the name Zope may be packaged in any form, as long as they
- # conform to all of the clauses above.
- #
- #
- # Disclaimer
- #
- # THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
- # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
- # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- #
- #
- # This software consists of contributions made by Digital Creations and
- # many individuals on behalf of Digital Creations. Specific
- # attributions are listed in the accompanying credits file.
- #
- ##############################################################################
-
-
- class ResultList:
-
- def __init__(self, d, words, index, TupleType=type(())):
- self._index = index
- self._words = words
- if (type(d) is TupleType): self._dict = { d[0] : d[1] }
- else: self._dict = d
-
- def __len__(self): return len(self._dict)
-
- def __getitem__(self, key): return self._dict[key]
-
- def keys(self): return self._dict.keys()
-
- def has_key(self, key): return self._dict.has_key(key)
-
- def items(self): return self._dict.items()
-
- def __and__(self, x):
- result = {}
- dict = self._dict
- xdict = x._dict
- xhas = xdict.has_key
- for id, score in dict.items():
- if xhas(id): result[id] = xdict[id]+score
-
- return self.__class__(result, self._words+x._words, self._index)
-
- def and_not(self, x):
- result = {}
- dict = self._dict
- xdict = x._dict
- xhas = xdict.has_key
- for id, score in dict.items():
- if not xhas(id): result[id] = score
-
- return self.__class__(result, self._words, self._index)
-
- def __or__(self, x):
- result = {}
- dict = self._dict
- has = dict.has_key
- xdict = x._dict
- xhas = xdict.has_key
- for id, score in dict.items():
- if xhas(id): result[id] = xdict[id]+score
- else: result[id] = score
-
- for id, score in xdict.items():
- if not has(id): result[id] = score
-
- return self.__class__(result, self._words+x._words, self._index)
-
- def near(self, x):
- result = {}
- dict = self._dict
- xdict = x._dict
- xhas = xdict.has_key
- positions = self._index.positions
- for id, score in dict.items():
- if not xhas(id): continue
- p=(map(lambda i: (i,0), positions(id,self._words))+
- map(lambda i: (i,1), positions(id,x._words)))
- p.sort()
- d = lp = 9999
- li = None
- lsrc = None
- for i,src in p:
- if i is not li and src is not lsrc and li is not None:
- d = min(d,i-li)
- li = i
- lsrc = src
- if d==lp: score = min(score,xdict[id]) # synonyms
- else: score = (score+xdict[id])/d
- result[id] = score
-
- return self.__class__(result, self._words+x._words, self._index)
-
-