Search
[wolnelektury.git] / src / search / index.py
index 9f87b99..22c9a02 100644 (file)
@@ -9,6 +9,9 @@ import os
 import re
 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
@@ -95,7 +98,10 @@ class Snippets(object):
         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):
@@ -122,6 +128,22 @@ class Index(SolrIndex):
     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
@@ -142,7 +164,8 @@ class Index(SolrIndex):
                     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
@@ -222,30 +245,29 @@ class Index(SolrIndex):
             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, legacy=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))
+        if legacy:
+          self.delete_query(self.index.Q(book_id=book.id))
 
-        if remove_snippets:
-            snippets = Snippets(book_id)
+          if remove_snippets:
+            snippets = Snippets(book.id)
             snippets.remove()
+        self.remove_snippets(book)
 
-    def index_book(self, book, book_info=None, overwrite=True):
+    def index_book(self, book, book_info=None, overwrite=True, legacy=True):
         """
         Indexes the book.
         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)
+            self.remove_book(book, remove_snippets=False, legacy=legacy)
 
         book_doc = self.create_book_doc(book)
         meta_fields = self.extract_metadata(book, book_info, dc_only=[
@@ -258,7 +280,8 @@ class Index(SolrIndex):
             book_doc[n] = f
 
         book_doc['uid'] = "book%s" % book_doc['book_id']
-        self.index.add(book_doc)
+        if legacy:
+            self.index.add(book_doc)
         del book_doc
         book_fields = {
             'title': meta_fields['title'],
@@ -270,7 +293,7 @@ class Index(SolrIndex):
             if tag_name in meta_fields:
                 book_fields[tag_name] = meta_fields[tag_name]
 
-        self.index_content(book, book_fields=book_fields)
+        self.index_content(book, book_fields=book_fields, legacy=legacy)
 
     master_tags = [
         'opowiadanie',
@@ -302,7 +325,7 @@ class Index(SolrIndex):
         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['is_book'] = True
@@ -314,21 +337,20 @@ class Index(SolrIndex):
             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):
+                    if isinstance(p, librarian.meta.types.person.Person):
                         persons = str(p)
                     else:
                         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
 
@@ -362,7 +384,7 @@ class Index(SolrIndex):
             if master.tag in self.master_tags:
                 return master
 
-    def index_content(self, book, book_fields):
+    def index_content(self, book, book_fields, legacy=True):
         """
         Walks the book XML and extract content from it.
         Adds parts for each header tag and for each fragment.
@@ -389,16 +411,16 @@ class Index(SolrIndex):
             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)
 
@@ -462,9 +484,10 @@ class Index(SolrIndex):
                     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)
-                        self.index.add(doc)
+                                       text=''.join(footnote))
+                        self.add_snippet(book, doc)
+                        if legacy:
+                            self.index.add(doc)
                         footnote = []
 
                     # handle fragments and themes.
@@ -498,7 +521,10 @@ class Index(SolrIndex):
                                        fragment_anchor=fid,
                                        text=fix_format(frag['text']),
                                        themes=frag['themes'])
-                        self.index.add(doc)
+                        # Add searchable fragment
+                        self.add_snippet(book, doc)
+                        if legacy:
+                            self.index.add(doc)
 
                         # Collect content.
 
@@ -510,7 +536,9 @@ class Index(SolrIndex):
                 doc = add_part(snippets, header_index=position,
                                header_type=header.tag, text=fix_format(content))
 
-                self.index.add(doc)
+                self.add_snippet(book, doc)
+                if legacy:
+                    self.index.add(doc)
 
         finally:
             snippets.close()
@@ -612,7 +640,7 @@ class SearchResult(object):
         return result
 
     def __str__(self):
-        return u"<SR id=%d %d(%d) hits score=%f %d snippets>" % \
+        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))
@@ -635,7 +663,7 @@ class SearchResult(object):
         if self._book is not None:
             return self._book
         try:
-            self._book = catalogue.models.Book.objects.get(id=self.book_id)
+            self._book = catalogue.models.Book.objects.get(id=self.book_id, findable=True)
         except catalogue.models.Book.DoesNotExist:
             self._book = None
         return self._book
@@ -664,20 +692,18 @@ class SearchResult(object):
             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 = {}
@@ -801,7 +827,7 @@ class PictureResult(object):
             self._hits.append(hit)
 
     def __str__(self):
-        return u"<PR id=%d score=%f >" % (self.picture_id, self._score)
+        return "<PR id=%d score=%f >" % (self.picture_id, self._score)
 
     def __repr__(self):
         return str(self)
@@ -904,7 +930,7 @@ class Search(SolrIndex):
 
     def search_by_author(self, words):
         from catalogue.models import Book
-        books = Book.objects.filter(parent=None).order_by('-popularity__count')
+        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]]
@@ -978,7 +1004,7 @@ class Search(SolrIndex):
                 idx += 1
 
         except IOError as e:
-            book = catalogue.models.Book.objects.filter(id=book_id)
+            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():