cleanup solr schema
[wolnelektury.git] / src / search / index.py
index c84841b..b94d8f6 100644 (file)
@@ -20,6 +20,13 @@ from wolnelektury.utils import makedirs
 
 log = logging.getLogger('search')
 
+if os.path.isfile(settings.SOLR_STOPWORDS):
+    stopwords = set(
+        line.decode('utf-8').strip()
+        for line in open(settings.SOLR_STOPWORDS) if not line.startswith('#'))
+else:
+    stopwords = set()
+
 
 class SolrIndex(object):
     def __init__(self, mode=None):
@@ -240,7 +247,8 @@ class Index(SolrIndex):
             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']
@@ -257,8 +265,9 @@ class Index(SolrIndex):
             '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)
 
@@ -269,14 +278,14 @@ class Index(SolrIndex):
         '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']
 
@@ -295,7 +304,6 @@ class Index(SolrIndex):
             book_info = dcparser.parse(open(book.xml_file.path))
 
         fields['slug'] = book.slug
-        fields['tags'] = [t.name for t in book.tags]
         fields['is_book'] = True
 
         # validator, name
@@ -365,8 +373,8 @@ class Index(SolrIndex):
         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
@@ -417,17 +425,10 @@ class Index(SolrIndex):
 
             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:
@@ -448,7 +449,7 @@ class Index(SolrIndex):
                     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 = []
@@ -515,8 +516,7 @@ class Index(SolrIndex):
 
 
 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
@@ -557,6 +557,17 @@ class SearchResult(object):
 
             self._hits.append(hit)
 
+    @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 __unicode__(self):
         return u"<SR id=%d %d(%d) hits score=%f %d snippets>" % \
             (self.book_id, len(self._hits),
@@ -572,10 +583,9 @@ class SearchResult(object):
 
     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):
@@ -676,7 +686,7 @@ class SearchResult(object):
             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
 
@@ -734,71 +744,35 @@ class Search(SolrIndex):
 
         return q
 
-    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))
-
-        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 search_some(self, searched, fields, book=True,
-                    filters=None, snippets=True, query_terms=None):
-        assert isinstance(fields, list)
-        if filters is None:
-            filters = []
+    def search_by_author(self, words):
+        from catalogue.models import Book
+        books = Book.objects.filter(parent=None).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, book=True):
+        if book and fields == ['authors']:
+            return self.search_by_author(words)
+        filters = []
+        for word in words:
+            if book 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 not filters:
+            return []
         if book:
-            filters.append(self.index.Q(is_book=True))
-
-        query = self.index.Q()
-
-        for fld in fields:
-            query = self.index.Q(query | self.make_term_query(searched, fld))
-
-        query = self.index.query(query)
+            query = self.index.query(is_book=True)
+        else:
+            query = self.index.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]
-
-    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')
-
-        query = self.index.query(q).query(q_themes).field_limit(score=True, all_fields=True)
-        res = query.execute()
-
-        for found in res:
-            books.append(SearchResult(found, how_found='search_everywhere_themesXcontent', query_terms=query_terms))
-
-        # query themes/content x author/title/tags
-        in_content = self.index.Q()
-        in_meta = self.index.Q()
-
-        for fld in ['themes_pl', 'text']:
-            in_content |= self.make_term_query(searched, field=fld)
-
-        for fld in ['tags', 'authors', 'title']:
-            in_meta |= self.make_term_query(searched, field=fld)
-
-        q = in_content & in_meta
-        res = self.index.query(q).field_limit(score=True, all_fields=True).execute()
-
-        for found in res:
-            books.append(SearchResult(found, how_found='search_everywhere', query_terms=query_terms))
-
-        return books
+        return [SearchResult(found, how_found='search_words', query_terms=words) for found in query.execute()]
 
     def get_snippets(self, searchresult, query, field='text', num=1):
         """
@@ -821,14 +795,17 @@ class Search(SolrIndex):
                 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 snip not in snips:
+                    snips[idx] = snip
+                    if snip:
+                        num -= 1
                 idx += 1
 
         except IOError, e:
-            book = catalogue.models.Book.objects.get(id=book_id)
-            if not book.children.exists():
+            book = catalogue.models.Book.objects.filter(id=book_id)
+            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:
@@ -841,102 +818,6 @@ class Search(SolrIndex):
 
         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:
-                    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:
-                        # WTF
-                        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: t.slug not 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 bid not 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):
         """