X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/e0611b29453531f662d873890d5ab44b340a8856..bb280fe2e90038e0ae3fa78356c50d98a163eb89:/apps/opds/views.py diff --git a/apps/opds/views.py b/apps/opds/views.py index 136712504..23c320e62 100644 --- a/apps/opds/views.py +++ b/apps/opds/views.py @@ -16,9 +16,8 @@ from django.contrib.sites.models import Site from basicauth import logged_in_or_basicauth, factory_decorator from catalogue.models import Book, Tag -from search.views import get_search, SearchResult, JVM -from lucene import Term, QueryWrapperFilter, TermQuery - +from search.views import Search, SearchResult +import operator import logging import re @@ -92,7 +91,7 @@ class OPDSFeed(Atom1Feed): {u"href": reverse("opds_authors"), u"rel": u"start", u"type": u"application/atom+xml"}) - handler.addQuickElement(u"link", None, + handler.addQuickElement(u"link", None, {u"href": full_url(os.path.join(settings.STATIC_URL, "opensearch.xml")), u"rel": u"search", u"type": u"application/opensearchdescription+xml"}) @@ -328,8 +327,35 @@ class SearchFeed(AcquisitionFeed): description = u"Wyniki wyszukiwania na stronie WolneLektury.pl" title = u"Wyniki wyszukiwania" - INLINE_QUERY_RE = re.compile(r"(author:(?P[^ ]+)|title:(?P[^ ]+)|categories:(?P<categories>[^ ]+)|description:(?P<description>[^ ]+))") - + QUOTE_OR_NOT = r'(?:(?=["])"([^"]+)"|([^ ]+))' + INLINE_QUERY_RE = re.compile( + r"author:" + QUOTE_OR_NOT + + "|translator:" + QUOTE_OR_NOT + + "|title:" + QUOTE_OR_NOT + + "|categories:" + QUOTE_OR_NOT + + "|description:" + QUOTE_OR_NOT + + "|text:" + QUOTE_OR_NOT + ) + MATCHES = { + 'author': (0, 1), + 'translator': (2, 3), + 'title': (4, 5), + 'categories': (6, 7), + 'description': (8, 9), + 'text': (10, 11), + } + + PARAMS_TO_FIELDS = { + 'author': 'authors', + 'translator': 'translators', + # 'title': 'title', + 'categories': 'tag_name_pl', + 'description': 'text', + # 'text': 'text', + } + + ATOM_PLACEHOLDER = re.compile(r"^{(atom|opds):\w+}$") + def get_object(self, request): """ For OPDS 1.1 We should handle a query for search terms @@ -337,7 +363,7 @@ class SearchFeed(AcquisitionFeed): OpenSearch defines fields: atom:author, atom:contributor (treated as translator), atom:title. Inline query provides author, title, categories (treated as book tags), description (treated as content search terms). - + if search terms are provided, we shall search for books according to Hint information (from author & contributror & title). @@ -345,105 +371,67 @@ class SearchFeed(AcquisitionFeed): (perhaps for is_book=True) """ - JVM.attachCurrentThread() query = request.GET.get('q', '') - + inline_criteria = re.findall(self.INLINE_QUERY_RE, query) if inline_criteria: - def get_criteria(criteria, name, position): - e = filter(lambda el: el[0][0:len(name)] == name, criteria) - log.info("get_criteria: %s" % e) - if not e: - return None - c = e[0][position] - log.info("get_criteria: %s" % c) - if c[0] == '"' and c[-1] == '"': - c = c[1:-1] - c = c.replace('+', ' ') - return c - - author = get_criteria(inline_criteria, 'author', 1) - title = get_criteria(inline_criteria, 'title', 2) - translator = None - categories = get_criteria(inline_criteria, 'categories', 3) - query = get_criteria(inline_criteria, 'description', 4) + remains = re.sub(self.INLINE_QUERY_RE, '', query) + remains = re.sub(r'[ \t]+', ' ', remains) + + def get_criteria(criteria, name): + for c in criteria: + for p in self.MATCHES[name]: + if c[p]: + if p % 2 == 0: + return c[p].replace('+', ' ') + return c[p] + return None + + criteria = dict(map( + lambda cn: (cn, get_criteria(inline_criteria, cn)), + ['author', 'translator', 'title', 'categories', + 'description', 'text'])) + query = remains + # empty query and text set case? + log.debug("Inline query = [%s], criteria: %s" % (query, criteria)) else: - author = request.GET.get('author', '') - title = request.GET.get('title', '') - translator = request.GET.get('translator', '') - - # Our client didn't handle the opds placeholders - if author == '{atom:author}': author = '' - if title == '{atom:title}': title = '' - if translator == '{atom:contributor}': translator = '' - categories = None - fuzzy = False - - srch = get_search() - hint = srch.hint() - - # Scenario 1: full search terms provided. - # Use auxiliarry information to narrow it and make it better. + def remove_dump_data(val): + """Some clients don't get opds placeholders and just send them.""" + if self.ATOM_PLACEHOLDER.match(val): + return '' + return val + + criteria = dict([(cn, remove_dump_data(request.GET.get(cn, ''))) + for cn in self.MATCHES.keys()]) + # query is set above. + log.debug("Inline query = [%s], criteria: %s" % (query, criteria)) + + srch = Search() + + book_hit_filter = srch.index.Q(book_id__any=True) + filters = [book_hit_filter] + [srch.index.Q( + **{self.PARAMS_TO_FIELDS.get(cn, cn): criteria[cn]} + ) for cn in self.MATCHES.keys() if cn in criteria + if criteria[cn]] + if query: - filters = [] - - if author: - log.info( "narrow to author %s" % author) - hint.tags(srch.search_tags(srch.get_phrase(srch.get_tokens(author, field='authors'), field='authors'), - filt=srch.term_filter(Term('tag_category', 'author')))) - - if translator: - log.info( "filter by translator %s" % translator) - filters.append(QueryWrapperFilter( - srch.make_phrase(srch.get_tokens(translator, field='translators'), - field='translators'))) - - if categories: - filters.append(QueryWrapperFilter( - srch.make_phrase(srch.get_tokens(categories, field="tag_name_pl"), - field='tag_name_pl'))) - - flt = srch.chain_filters(filters) - if title: - log.info( "hint by book title %s" % title) - q = srch.make_phrase(srch.get_tokens(title, field='title'), field='title') - hint.books(*srch.search_books(q, filt=flt)) - - toks = srch.get_tokens(query) - log.info("tokens for query: %s" % toks) - - results = SearchResult.aggregate(srch.search_perfect_book(toks, fuzzy=fuzzy, hint=hint), - srch.search_perfect_parts(toks, fuzzy=fuzzy, hint=hint), - srch.search_everywhere(toks, fuzzy=fuzzy, hint=hint)) - results.sort(reverse=True) - books = [] - for r in results: - try: - books.append(r.book) - except Book.DoesNotExist: - pass - log.info("books: %s" % books) - return books + q = srch.index.query( + reduce(operator.or_, + [srch.index.Q(**{self.PARAMS_TO_FIELDS.get(cn, cn): query}) + for cn in self.MATCHES.keys()], + srch.index.Q())) else: - # Scenario 2: since we no longer have to figure out what the query term means to the user, - # we can just use filters and not the Hint class. - filters = [] - - fields = { - 'author': author, - 'translators': translator, - 'title': title - } - - for fld, q in fields.items(): - if q: - filters.append(QueryWrapperFilter( - srch.make_phrase(srch.get_tokens(q, field=fld), field=fld))) - - flt = srch.chain_filters(filters) - books = srch.search_books(TermQuery(Term('is_book', 'true')), filt=flt) - return books + q = srch.index.query(srch.index.Q()) + + q = srch.apply_filters(q, filters).field_limit(score=True, fields=['book_id']) + results = q.execute() + + book_scores = dict([(r['book_id'], r['score']) for r in results]) + books = Book.objects.filter(id__in=set([r['book_id'] for r in results])) + books = list(books) + books.sort(reverse=True, key=lambda book: book_scores[book.id]) + return books def get_link(self, query): return "%s?q=%s" % (reverse('search'), query)