-# -*- coding: utf-8 -*-
# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
#
-from django.conf import settings
-
+from functools import reduce, total_ordering
+from itertools import chain
+import logging
+import operator
import os
import re
-import errno
+from django.conf import settings
from librarian import dcparser
+import librarian.meta.types.date
+import librarian.meta.types.person
+import librarian.meta.types.text
from librarian.parser import WLDocument
from lxml import etree
+import scorched
import catalogue.models
+import picture.models
from pdcounter.models import Author as PDCounterAuthor, BookStub as PDCounterBook
-from itertools import chain
-import traceback
-import logging
-log = logging.getLogger('search')
-import sunburnt
-import custom
-import operator
+from wolnelektury.utils import makedirs
+from . import custom
log = logging.getLogger('search')
+
+if os.path.isfile(settings.SOLR_STOPWORDS):
+ stopwords = set(
+ line.strip()
+ for line in open(settings.SOLR_STOPWORDS) if not line.startswith('#'))
+else:
+ stopwords = set()
+
+
class SolrIndex(object):
def __init__(self, mode=None):
self.index = custom.CustomSolrInterface(settings.SOLR, mode=mode)
SNIPPET_DIR = "snippets"
def __init__(self, book_id, revision=None):
- try:
- os.makedirs(os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR))
- except OSError as exc:
- if exc.errno == errno.EEXIST:
- pass
- else: raise
+ makedirs(os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR))
self.book_id = book_id
self.revision = revision
self.file = None
+ self.position = None
@property
def path(self):
- if self.revision: fn = "%d.%d" % (self.book_id, self.revision)
- else: fn = "%d" % self.book_id
+ if self.revision:
+ fn = "%d.%d" % (self.book_id, self.revision)
+ else:
+ fn = "%d" % self.book_id
return os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR, fn)
"""
Open the snippet file. Call .close() afterwards.
"""
- if not 'b' in mode:
+ if 'b' not in mode:
mode += 'b'
if 'w' in mode:
of the snippet stored there.
"""
self.file.seek(pos[0], 0)
- txt = self.file.read(pos[1]).decode('utf-8')
+ try:
+ txt = self.file.read(pos[1]).decode('utf-8')
+ except:
+ return ''
return txt
def close(self):
def __init__(self):
super(Index, self).__init__(mode='rw')
+ def remove_snippets(self, book):
+ book.snippet_set.all().delete()
+
+ def add_snippet(self, book, doc):
+ assert book.id == doc.pop('book_id')
+ # Fragments already exist and can be indexed where they live.
+ if 'fragment_anchor' in doc:
+ return
+
+ text = doc.pop('text')
+ header_index = doc.pop('header_index')
+ book.snippet_set.create(
+ sec=header_index,
+ text=text,
+ )
+
def delete_query(self, *queries):
"""
index.delete(queries=...) doesn't work, so let's reimplement it
"""
uids = set()
for q in queries:
- if isinstance(q, sunburnt.search.LuceneQuery):
+ if isinstance(q, scorched.search.LuceneQuery):
q = self.index.query(q)
q.field_limiter.update(['uid'])
st = 0
uids.add(res['uid'])
st += rows
if uids:
- self.index.delete(uids)
+ # FIXME: With Solr API change, this doesn't work.
+ #self.index.delete(uids)
return True
else:
return False
if not remove_only:
# then add them [all or just one passed]
if not tags:
- tags = chain(catalogue.models.Tag.objects.exclude(category='set'), \
- PDCounterAuthor.objects.all(), \
+ tags = chain(
+ catalogue.models.Tag.objects.exclude(category='set'),
+ PDCounterAuthor.objects.all(),
PDCounterBook.objects.all())
for tag in tags:
"""
Create a lucene document referring book id.
"""
- doc = {
- 'book_id': int(book.id),
- }
+ doc = {'book_id': int(book.id)}
if book.parent is not None:
- doc["parent_id"] = int(book.parent.id)
+ doc['parent_id'] = int(book.parent.id)
return doc
- def remove_book(self, book_or_id, remove_snippets=True):
+ def remove_book(self, book, remove_snippets=True):
"""Removes a book from search index.
book - Book instance."""
- if isinstance(book_or_id, catalogue.models.Book):
- book_id = book_or_id.id
- else:
- book_id = book_or_id
-
- self.delete_query(self.index.Q(book_id=book_id))
+ self.delete_query(self.index.Q(book_id=book.id))
if remove_snippets:
- snippets = Snippets(book_id)
+ snippets = Snippets(book.id)
snippets.remove()
+ self.remove_snippets(book)
def index_book(self, book, book_info=None, overwrite=True):
"""
Creates a lucene document for extracted metadata
and calls self.index_content() to index the contents of the book.
"""
+ if not book.xml_file: return
+
if overwrite:
# we don't remove snippets, since they might be still needed by
# threads using not reopened index
self.remove_book(book, remove_snippets=False)
book_doc = self.create_book_doc(book)
- meta_fields = self.extract_metadata(book, book_info, dc_only=['source_name', 'authors', 'translators', 'title'])
+ meta_fields = self.extract_metadata(book, book_info, dc_only=[
+ 'source_name', 'authors', 'translators', 'title', 'epochs', 'kinds', 'genres'])
# let's not index it - it's only used for extracting publish date
if 'source_name' in meta_fields:
del meta_fields['source_name']
'published_date': meta_fields['published_date']
}
- if 'translators' in meta_fields:
- book_fields['translators'] = meta_fields['translators']
+ for tag_name in ('translators', 'epochs', 'kinds', 'genres'):
+ if tag_name in meta_fields:
+ book_fields[tag_name] = meta_fields[tag_name]
self.index_content(book, book_fields=book_fields)
'dramat_wierszowany_lp',
'dramat_wspolczesny', 'liryka_l', 'liryka_lp',
'wywiad',
- ]
+ ]
ignore_content_tags = [
- 'uwaga', 'extra',
+ 'uwaga', 'extra', 'nota_red', 'abstrakt',
'zastepnik_tekstu', 'sekcja_asterysk', 'separator_linia', 'zastepnik_wersu',
'didaskalia',
'naglowek_aktu', 'naglowek_sceny', 'naglowek_czesc',
- ]
+ ]
footnote_tags = ['pa', 'pt', 'pr', 'pe']
- skip_header_tags = ['autor_utworu', 'nazwa_utworu', 'dzielo_nadrzedne', '{http://www.w3.org/1999/02/22-rdf-syntax-ns#}RDF']
+ skip_header_tags = ['autor_utworu', 'nazwa_utworu', 'dzielo_nadrzedne',
+ '{http://www.w3.org/1999/02/22-rdf-syntax-ns#}RDF']
published_date_re = re.compile("([0-9]+)[\]. ]*$")
fields = {}
if book_info is None:
- book_info = dcparser.parse(open(book.xml_file.path))
+ book_info = dcparser.parse(open(book.xml_file.path, 'rb'))
fields['slug'] = book.slug
- fields['tags'] = [t.name for t in book.tags]
fields['is_book'] = True
# validator, name
if hasattr(book_info, field.name):
if not getattr(book_info, field.name):
continue
- # since no type information is available, we use validator
- type_indicator = field.validator
- if type_indicator == dcparser.as_unicode:
+ type_indicator = field.value_type
+ if issubclass(type_indicator, librarian.meta.types.text.TextValue):
s = getattr(book_info, field.name)
if field.multiple:
s = ', '.join(s)
fields[field.name] = s
- elif type_indicator == dcparser.as_person:
+ elif issubclass(type_indicator, librarian.meta.types.person.Person):
p = getattr(book_info, field.name)
- if isinstance(p, dcparser.Person):
- persons = unicode(p)
+ if isinstance(p, librarian.meta.types.person.Person):
+ persons = str(p)
else:
- persons = ', '.join(map(unicode, p))
+ persons = ', '.join(map(str, p))
fields[field.name] = persons
- elif type_indicator == dcparser.as_date:
+ elif issubclass(type_indicator, librarian.meta.types.date.DateValue):
dt = getattr(book_info, field.name)
fields[field.name] = dt
match = self.published_date_re.search(book_info.source_name)
if match is not None:
pd = str(match.groups()[0])
- if not pd: pd = ""
+ if not pd:
+ pd = ""
fields["published_date"] = pd
return fields
if master.tag in self.master_tags:
return master
- def index_content(self, book, book_fields={}):
+ def index_content(self, book, book_fields):
"""
Walks the book XML and extract content from it.
Adds parts for each header tag and for each fragment.
if master is None:
return []
- def walker(node, ignore_tags=[]):
-
- if node.tag not in ignore_tags:
+ def walker(node):
+ if node.tag not in self.ignore_content_tags:
yield node, None, None
if node.text is not None:
yield None, node.text, None
return
def fix_format(text):
- # separator = [u" ", u"\t", u".", u";", u","]
+ # separator = [" ", "\t", ".", ";", ","]
if isinstance(text, list):
# need to join it first
text = filter(lambda s: s is not None, content)
- text = u' '.join(text)
+ text = ' '.join(text)
# for i in range(len(text)):
# if i > 0:
# if text[i][0] not in separator\
# and text[i - 1][-1] not in separator:
- # text.insert(i, u" ")
+ # text.insert(i, " ")
return re.sub("(?m)/$", "", text)
if 'themes' in fields:
doc['themes'] = fields['themes']
- doc['uid'] = "part%s%s%s" % (doc['header_index'],
- doc['header_span'],
- doc.get('fragment_anchor', ''))
+ doc['uid'] = "part%s-%s-%s-%s" % (
+ book.id, doc['header_index'], doc['header_span'], doc.get('fragment_anchor', ''))
return doc
- def give_me_utf8(s):
- if isinstance(s, unicode):
- return s.encode('utf-8')
- else:
- return s
-
fragments = {}
snippets = Snippets(book.id).open('w')
try:
content.append(text)
handle_text = [all_content]
- for start, text, end in walker(header, ignore_tags=self.ignore_content_tags):
+ for start, text, end in walker(header):
# handle footnotes
if start is not None and start.tag in self.footnote_tags:
footnote = []
elif end is not None and footnote is not [] and end.tag in self.footnote_tags:
handle_text.pop()
doc = add_part(snippets, header_index=position, header_type=header.tag,
- text=u''.join(footnote),
- is_footnote=True)
+ text=''.join(footnote))
+ self.add_snippet(book, doc)
self.index.add(doc)
footnote = []
# handle fragments and themes.
if start is not None and start.tag == 'begin':
fid = start.attrib['id'][1:]
- fragments[fid] = {'text': [], 'themes': [], 'start_section': position, 'start_header': header.tag}
+ fragments[fid] = {
+ 'text': [], 'themes': [], 'start_section': position, 'start_header': header.tag}
# themes for this fragment
elif start is not None and start.tag == 'motyw':
fid = start.attrib['id'][1:]
- handle_text.append(None)
+ handle_text.append(lambda text: None)
if start.text is not None:
- fragments[fid]['themes'] += map(unicode.strip, map(unicode, (start.text.split(','))))
+ fragments[fid]['themes'] += map(str.strip, map(str, (start.text.split(','))))
elif end is not None and end.tag == 'motyw':
handle_text.pop()
if fid not in fragments:
continue # a broken <end> node, skip it
frag = fragments[fid]
- if frag['themes'] == []:
+ if not frag['themes']:
continue # empty themes list.
del fragments[fid]
fragment_anchor=fid,
text=fix_format(frag['text']),
themes=frag['themes'])
+ # Add searchable fragment
+ self.add_snippet(book, doc)
self.index.add(doc)
# Collect content.
if text is not None and handle_text is not []:
hdl = handle_text[-1]
- if hdl is not None:
- hdl(text)
+ hdl(text)
# in the end, add a section text.
doc = add_part(snippets, header_index=position,
header_type=header.tag, text=fix_format(content))
+ self.add_snippet(book, doc)
self.index.add(doc)
finally:
snippets.close()
+ def remove_picture(self, picture_or_id):
+ """Removes a picture from search index."""
+ if isinstance(picture_or_id, picture.models.Picture):
+ picture_id = picture_or_id.id
+ else:
+ picture_id = picture_or_id
+ self.delete_query(self.index.Q(picture_id=picture_id))
+
+ def index_picture(self, picture, picture_info=None, overwrite=True):
+ """
+ Indexes the picture.
+ Creates a lucene document for extracted metadata
+ and calls self.index_area() to index the contents of the picture.
+ """
+ if overwrite:
+ # we don't remove snippets, since they might be still needed by
+ # threads using not reopened index
+ self.remove_picture(picture)
+
+ picture_doc = {'picture_id': int(picture.id)}
+ meta_fields = self.extract_metadata(picture, picture_info, dc_only=[
+ 'authors', 'title', 'epochs', 'kinds', 'genres'])
+
+ picture_doc.update(meta_fields)
+
+ picture_doc['uid'] = "picture%s" % picture_doc['picture_id']
+ self.index.add(picture_doc)
+ del picture_doc['is_book']
+ for area in picture.areas.all():
+ self.index_area(area, picture_fields=picture_doc)
+
+ def index_area(self, area, picture_fields):
+ """
+ Indexes themes and objects on the area.
+ """
+ doc = dict(picture_fields)
+ doc['area_id'] = area.id
+ doc['themes'] = list(area.tags.filter(category__in=('theme', 'thing')).values_list('name', flat=True))
+ doc['uid'] = 'area%s' % area.id
+ self.index.add(doc)
+
+@total_ordering
class SearchResult(object):
- def __init__(self, doc, how_found=None, query=None, query_terms=None):
- # self.search = search
+ def __init__(self, doc, how_found=None, query_terms=None):
self.boost = 1.0
self._hits = []
self._processed_hits = None # processed hits
self.snippets = []
self.query_terms = query_terms
+ self._book = None
if 'score' in doc:
self._score = doc['score']
self._hits.append(hit)
- def __unicode__(self):
- return u"<SR id=%d %d(%d) hits score=%f %d snippets>" % \
- (self.book_id, len(self._hits), self._processed_hits and len(self._processed_hits) or -1, self._score, len(self.snippets))
+ @classmethod
+ def from_book(cls, book, how_found=None, query_terms=None):
+ doc = {
+ 'score': book.popularity.count,
+ 'book_id': book.id,
+ 'published_date': 0,
+ }
+ result = cls(doc, how_found=how_found, query_terms=query_terms)
+ result._book = book
+ return result
def __str__(self):
- return unicode(self).encode('utf-8')
+ return "<SR id=%d %d(%d) hits score=%f %d snippets>" % \
+ (self.book_id, len(self._hits),
+ len(self._processed_hits) if self._processed_hits else -1,
+ self._score, len(self.snippets))
+
+ def __bytes__(self):
+ return str(self).encode('utf-8')
@property
def score(self):
def merge(self, other):
if self.book_id != other.book_id:
- raise ValueError("this search result is or book %d; tried to merge with %d" % (self.book_id, other.book_id))
+ raise ValueError("this search result is for book %d; tried to merge with %d" % (self.book_id, other.book_id))
self._hits += other._hits
- if other.score > self.score:
- self._score = other._score
+ self._score += max(other._score, 0)
return self
def get_book(self):
- if hasattr(self, '_book'):
+ if self._book is not None:
return self._book
- self._book = catalogue.models.Book.objects.get(id=self.book_id)
+ try:
+ self._book = catalogue.models.Book.objects.get(id=self.book_id, findable=True)
+ except catalogue.models.Book.DoesNotExist:
+ self._book = None
return self._book
book = property(get_book)
# to sections and fragments
frags = filter(lambda r: r[self.FRAGMENT] is not None, self._hits)
- sect = filter(lambda r: r[self.FRAGMENT] is None, self._hits)
+ sect = [hit for hit in self._hits if hit[self.FRAGMENT] is None]
# sections not covered by fragments
- sect = filter(lambda s: 0 == len(filter(
- lambda f: s[self.POSITION][self.POSITION_INDEX] >= f[self.POSITION][self.POSITION_INDEX]
- and s[self.POSITION][self.POSITION_INDEX] < f[self.POSITION][self.POSITION_INDEX] + f[self.POSITION][self.POSITION_SPAN],
- frags)), sect)
-
- hits = []
+ sect = filter(lambda s: 0 == len(list(filter(
+ lambda f: f[self.POSITION][self.POSITION_INDEX] <= s[self.POSITION][self.POSITION_INDEX] <
+ f[self.POSITION][self.POSITION_INDEX] + f[self.POSITION][self.POSITION_SPAN], frags))), sect)
- def remove_duplicates(lst, keyfn, compare):
+ def remove_duplicates(lst, keyfn, larger):
els = {}
for e in lst:
eif = keyfn(e)
if eif in els:
- if compare(els[eif], e) >= 1:
+ if larger(els[eif], e):
continue
els[eif] = e
return els.values()
# remove fragments with duplicated fid's and duplicated snippets
- frags = remove_duplicates(frags, lambda f: f[self.FRAGMENT], lambda a, b: cmp(a[self.SCORE], b[self.SCORE]))
- # frags = remove_duplicates(frags, lambda f: f[OTHER]['snippet_pos'] and f[OTHER]['snippet_pos'] or f[FRAGMENT],
- # lambda a, b: cmp(a[SCORE], b[SCORE]))
+ frags = remove_duplicates(frags, lambda f: f[self.FRAGMENT], lambda a, b: a[self.SCORE] > b[self.SCORE])
# remove duplicate sections
sections = {}
m.update(s[self.OTHER])
sections[si] = m
- hits = sections.values()
+ hits = list(sections.values())
for f in frags:
try:
if self.query_terms is not None:
for i in range(0, len(f[self.OTHER]['themes'])):
tms = f[self.OTHER]['themes'][i].split(r' +') + f[self.OTHER]['themes_pl'][i].split(' ')
- tms = map(unicode.lower, tms)
+ tms = map(str.lower, tms)
for qt in self.query_terms:
if qt in tms:
themes_hit.add(f[self.OTHER]['themes'][i])
break
def theme_by_name(n):
- th = filter(lambda t: t.name == n, themes)
+ th = list(filter(lambda t: t.name == n, themes))
if th:
return th[0]
else:
return None
- themes_hit = filter(lambda a: a is not None, map(theme_by_name, themes_hit))
+ themes_hit = list(filter(lambda a: a is not None, map(theme_by_name, themes_hit)))
m = {'score': f[self.SCORE],
'fragment': frag,
m.update(f[self.OTHER])
hits.append(m)
- hits.sort(lambda a, b: cmp(a['score'], b['score']), reverse=True)
+ hits.sort(key=lambda h: h['score'], reverse=True)
self._processed_hits = hits
books[r.book_id] = r
return books.values()
- def __cmp__(self, other):
- c = cmp(self.score, other.score)
- if c == 0:
- # this is inverted, because earlier date is better
- return cmp(other.published_date, self.published_date)
- else:
- return c
+ def get_sort_key(self):
+ return (-self.score,
+ self.published_date,
+ self.book.sort_key_author if self.book else '',
+ self.book.sort_key if self.book else '')
+
+ def __lt__(self, other):
+ return self.get_sort_key() > other.get_sort_key()
+
+ def __eq__(self, other):
+ return self.get_sort_key() == other.get_sort_key()
def __len__(self):
return len(self.hits)
def snippet_revision(self, idx=0):
try:
return self.hits[idx]['snippets_revision']
- except:
+ except (IndexError, KeyError):
return None
-class Search(SolrIndex):
- """
- Search facilities.
- """
- def __init__(self, default_field="text"):
- super(Search, self).__init__(mode='r')
+@total_ordering
+class PictureResult(object):
+ def __init__(self, doc, how_found=None, query_terms=None):
+ self.boost = 1.0
+ self.query_terms = query_terms
+ self._picture = None
+ self._hits = []
+ self._processed_hits = None
+ if 'score' in doc:
+ self._score = doc['score']
+ else:
+ self._score = 0
- def make_term_query(self, query, field='text', modal=operator.or_):
- """
- Returns term queries joined by boolean query.
- modal - applies to boolean query
- fuzzy - should the query by fuzzy.
- """
- if query is None: query = ''
- q = self.index.Q()
- q = reduce(modal, map(lambda s: self.index.Q(**{field: s}),
- query.split(r" ")), q)
+ self.picture_id = int(doc["picture_id"])
- return q
+ if doc.get('area_id'):
+ hit = (self._score, {
+ 'how_found': how_found,
+ 'area_id': doc['area_id'],
+ 'themes': doc.get('themes', []),
+ 'themes_pl': doc.get('themes_pl', []),
+ })
- def search_phrase(self, searched, field='text', book=False,
- filters=None,
- snippets=False):
- if filters is None: filters = []
- if book: filters.append(self.index.Q(is_book=True))
+ self._hits.append(hit)
- q = self.index.query(**{field: searched})
- q = self.apply_filters(q, filters).field_limit(score=True, all_fields=True)
- res = q.execute()
- return [SearchResult(found, how_found=u'search_phrase') for found in res]
+ def __str__(self):
+ return "<PR id=%d score=%f >" % (self.picture_id, self._score)
- def search_some(self, searched, fields, book=True,
- filters=None, snippets=True, query_terms=None):
- assert isinstance(fields, list)
- if filters is None: filters = []
- if book: filters.append(self.index.Q(is_book=True))
+ def __repr__(self):
+ return str(self)
- query = self.index.Q()
+ @property
+ def score(self):
+ return self._score * self.boost
- for fld in fields:
- query = self.index.Q(query | self.make_term_query(searched, fld))
+ def merge(self, other):
+ if self.picture_id != other.picture_id:
+ raise ValueError(
+ "this search result is for picture %d; tried to merge with %d" % (self.picture_id, other.picture_id))
+ self._hits += other._hits
+ self._score += max(other._score, 0)
+ return self
- query = self.index.query(query)
- query = self.apply_filters(query, filters).field_limit(score=True, all_fields=True)
- res = query.execute()
- return [SearchResult(found, how_found='search_some', query_terms=query_terms) for found in res]
+ SCORE = 0
+ OTHER = 1
+ @property
+ def hits(self):
+ if self._processed_hits is not None:
+ return self._processed_hits
- def search_everywhere(self, searched, query_terms=None):
- """
- Tries to use search terms to match different fields of book (or its parts).
- E.g. one word can be an author survey, another be a part of the title, and the rest
- are some words from third chapter.
- """
- books = []
- # content only query : themes x content
- q = self.make_term_query(searched, 'text')
- q_themes = self.make_term_query(searched, 'themes_pl')
+ hits = []
+ for hit in self._hits:
+ try:
+ area = picture.models.PictureArea.objects.get(id=hit[self.OTHER]['area_id'])
+ except picture.models.PictureArea.DoesNotExist:
+ # stale index
+ continue
+ # Figure out if we were searching for a token matching some word in theme name.
+ themes_hit = set()
+ if self.query_terms is not None:
+ for i in range(0, len(hit[self.OTHER]['themes'])):
+ tms = hit[self.OTHER]['themes'][i].split(r' +') + hit[self.OTHER]['themes_pl'][i].split(' ')
+ tms = map(str.lower, tms)
+ for qt in self.query_terms:
+ if qt in tms:
+ themes_hit.add(hit[self.OTHER]['themes'][i])
+ break
- query = self.index.query(q).query(q_themes).field_limit(score=True, all_fields=True)
- res = query.execute()
+ m = {
+ 'score': hit[self.SCORE],
+ 'area': area,
+ 'themes_hit': themes_hit,
+ }
+ m.update(hit[self.OTHER])
+ hits.append(m)
+
+ hits.sort(key=lambda h: h['score'], reverse=True)
+ hits = hits[:1]
+ self._processed_hits = hits
+ return hits
- for found in res:
- books.append(SearchResult(found, how_found='search_everywhere_themesXcontent', query_terms=query_terms))
+ def get_picture(self):
+ if self._picture is None:
+ self._picture = picture.models.Picture.objects.get(id=self.picture_id)
+ return self._picture
- # query themes/content x author/title/tags
- in_content = self.index.Q()
- in_meta = self.index.Q()
+ picture = property(get_picture)
- for fld in ['themes_pl', 'text']:
- in_content |= self.make_term_query(searched, field=fld)
+ @staticmethod
+ def aggregate(*result_lists):
+ books = {}
+ for rl in result_lists:
+ for r in rl:
+ if r.picture_id in books:
+ books[r.picture_id].merge(r)
+ else:
+ books[r.picture_id] = r
+ return books.values()
- for fld in ['tags', 'authors', 'title']:
- in_meta |= self.make_term_query(searched, field=fld)
+ def __lt__(self, other):
+ return self.score < other.score
- q = in_content & in_meta
- res = self.index.query(q).field_limit(score=True, all_fields=True).execute()
+ def __eq__(self, other):
+ return self.score == other.score
- for found in res:
- books.append(SearchResult(found, how_found='search_everywhere', query_terms=query_terms))
- return books
+class Search(SolrIndex):
+ """
+ Search facilities.
+ """
+ def __init__(self, default_field="text"):
+ super(Search, self).__init__(mode='r')
+
+ def make_term_query(self, query, field='text', modal=operator.or_):
+ """
+ Returns term queries joined by boolean query.
+ modal - applies to boolean query
+ fuzzy - should the query by fuzzy.
+ """
+ if query is None:
+ query = ''
+ q = self.index.Q()
+ q = reduce(modal, map(lambda s: self.index.Q(**{field: s}), query.split(r" ")), q)
+
+ return q
+
+ def search_by_author(self, words):
+ from catalogue.models import Book
+ books = Book.objects.filter(parent=None, findable=True).order_by('-popularity__count')
+ for word in words:
+ books = books.filter(cached_author__iregex='\m%s\M' % word).select_related('popularity__count')
+ return [SearchResult.from_book(book, how_found='search_by_author', query_terms=words) for book in books[:30]]
+
+ def search_words(self, words, fields, required=None, book=True, picture=False):
+ if book and not picture and fields == ['authors']:
+ return self.search_by_author(words)
+ filters = []
+ for word in words:
+ if book or picture or (word not in stopwords):
+ word_filter = None
+ for field in fields:
+ q = self.index.Q(**{field: word})
+ if word_filter is None:
+ word_filter = q
+ else:
+ word_filter |= q
+ filters.append(word_filter)
+ if required:
+ required_filter = None
+ for field in required:
+ for word in words:
+ if book or picture or (word not in stopwords):
+ q = self.index.Q(**{field: word})
+ if required_filter is None:
+ required_filter = q
+ else:
+ required_filter |= q
+ filters.append(required_filter)
+ if not filters:
+ return []
+ params = {}
+ if book:
+ params['is_book'] = True
+ if picture:
+ params['picture_id__gt'] = 0
+ else:
+ params['book_id__gt'] = 0
+ query = self.index.query(**params)
+ query = self.apply_filters(query, filters).field_limit(score=True, all_fields=True)
+ result_class = PictureResult if picture else SearchResult
+ return [result_class(found, how_found='search_words', query_terms=words) for found in query.execute()]
def get_snippets(self, searchresult, query, field='text', num=1):
"""
text = snippets.get((int(position),
int(length)))
snip = self.index.highlight(text=text, field=field, q=query)
- snips[idx] = snip
- if snip:
- num -= 1
+ if not snip and field == 'text':
+ snip = self.index.highlight(text=text, field='text_nonstem', q=query)
+ if snip not in snips:
+ snips[idx] = snip
+ if snip:
+ num -= 1
idx += 1
- except IOError, e:
- log.error("Cannot open snippet file for book id = %d [rev=%s], %s" % (book_id, revision, e))
+ except IOError as e:
+ book = catalogue.models.Book.objects.filter(id=book_id, findable=True)
+ if not book:
+ log.error("Book does not exist for book id = %d" % book_id)
+ elif not book.get().children.exists():
+ log.error("Cannot open snippet file for book id = %d [rev=%s], %s" % (book_id, revision, e))
return []
finally:
snippets.close()
- # remove verse end markers..
- snips = map(lambda s: s and s.replace("/\n", "\n"), snips)
+ # remove verse end markers..
+ snips = [s.replace("/\n", "\n") if s else s for s in snips]
searchresult.snippets = snips
return snips
- def hint_tags(self, query, pdcounter=True, prefix=True):
- """
- Return auto-complete hints for tags
- using prefix search.
- """
- q = self.index.Q()
- query = query.strip()
- for field in ['tag_name', 'tag_name_pl']:
- if prefix:
- q |= self.index.Q(**{field: query + "*"})
- else:
- q |= self.make_term_query(query, field=field)
- qu = self.index.query(q)
-
- return self.search_tags(qu, pdcounter=pdcounter)
-
- def search_tags(self, query, filters=None, pdcounter=False):
- """
- Search for Tag objects using query.
- """
- if not filters: filters = []
- if not pdcounter:
- filters.append(~self.index.Q(is_pdcounter=True))
- res = self.apply_filters(query, filters).execute()
-
- tags = []
- pd_tags = []
-
- for doc in res:
- is_pdcounter = doc.get('is_pdcounter', False)
- category = doc.get('tag_category')
- try:
- if is_pdcounter == True:
- if category == 'pd_author':
- tag = PDCounterAuthor.objects.get(id=doc.get('tag_id'))
- elif category == 'pd_book':
- tag = PDCounterBook.objects.get(id=doc.get('tag_id'))
- tag.category = 'pd_book' # make it look more lik a tag.
- else:
- print ("Warning. cannot get pdcounter tag_id=%d from db; cat=%s" % (int(doc.get('tag_id')), category)).encode('utf-8')
- pd_tags.append(tag)
- else:
- tag = catalogue.models.Tag.objects.get(id=doc.get("tag_id"))
- tags.append(tag)
-
- except catalogue.models.Tag.DoesNotExist: pass
- except PDCounterAuthor.DoesNotExist: pass
- except PDCounterBook.DoesNotExist: pass
-
- tags_slugs = set(map(lambda t: t.slug, tags))
- tags = tags + filter(lambda t: not t.slug in tags_slugs, pd_tags)
-
- log.debug('search_tags: %s' % tags)
-
- return tags
-
- def hint_books(self, query, prefix=True):
- """
- Returns auto-complete hints for book titles
- Because we do not index 'pseudo' title-tags.
- Prefix search.
- """
- q = self.index.Q()
- query = query.strip()
- if prefix:
- q |= self.index.Q(title=query + "*")
- else:
- q |= self.make_term_query(query, field='title')
- qu = self.index.query(q)
- only_books = self.index.Q(is_book=True)
- return self.search_books(qu, [only_books])
-
- def search_books(self, query, filters=None, max_results=10):
- """
- Searches for Book objects using query
- """
- bks = []
- bks_found = set()
- query = query.query(is_book=True)
- res = self.apply_filters(query, filters).field_limit(['book_id'])
- for r in res:
- try:
- bid = r['book_id']
- if not bid in bks_found:
- bks.append(catalogue.models.Book.objects.get(id=bid))
- bks_found.add(bid)
- except catalogue.models.Book.DoesNotExist: pass
- return bks
-
-
@staticmethod
def apply_filters(query, filters):
"""
Apply filters to a query
"""
- if filters is None: filters = []
+ if filters is None:
+ filters = []
filters = filter(lambda x: x is not None, filters)
for f in filters:
query = query.query(f)
fnp / wolnelektury.git / blobdiff