# -*- coding: utf-8 -*-
from django.conf import settings
-from lucene import SimpleFSDirectory, IndexWriter, CheckIndex, \
- File, Field, Integer, \
- NumericField, Version, Document, JavaError, IndexSearcher, \
- QueryParser, PerFieldAnalyzerWrapper, \
- SimpleAnalyzer, PolishAnalyzer, ArrayList, \
- KeywordAnalyzer, NumericRangeQuery, NumericRangeFilter, BooleanQuery, \
- BlockJoinQuery, BlockJoinCollector, Filter, TermsFilter, ChainedFilter, \
- HashSet, BooleanClause, Term, CharTermAttribute, \
- PhraseQuery, MultiPhraseQuery, StringReader, TermQuery, \
- FuzzyQuery, FuzzyTermEnum, PrefixTermEnum, Sort, Integer, \
- SimpleHTMLFormatter, Highlighter, QueryScorer, TokenSources, TextFragment, \
- BooleanFilter, TermsFilter, FilterClause, QueryWrapperFilter, \
- initVM, CLASSPATH, JArray, JavaError
- # KeywordAnalyzer
-
-# Initialize jvm
-JVM = initVM(CLASSPATH)
-
-import sys
+
import os
import re
import errno
from librarian.parser import WLDocument
from lxml import etree
import catalogue.models
-from pdcounter.models import Author as PDCounterAuthor
-from multiprocessing.pool import ThreadPool
-from threading import current_thread
-import atexit
+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 highlight
-class WLAnalyzer(PerFieldAnalyzerWrapper):
- def __init__(self):
- polish = PolishAnalyzer(Version.LUCENE_34)
- # polish_gap.setPositionIncrementGap(999)
-
- simple = SimpleAnalyzer(Version.LUCENE_34)
- # simple_gap.setPositionIncrementGap(999)
-
- keyword = KeywordAnalyzer(Version.LUCENE_34)
-
- # not sure if needed: there's NOT_ANALYZED meaning basically the same
-
- PerFieldAnalyzerWrapper.__init__(self, polish)
-
- self.addAnalyzer("tags", simple)
- self.addAnalyzer("technical_editors", simple)
- self.addAnalyzer("editors", simple)
- self.addAnalyzer("url", keyword)
- self.addAnalyzer("source_url", keyword)
- self.addAnalyzer("source_name", simple)
- self.addAnalyzer("publisher", simple)
- self.addAnalyzer("authors", simple)
- self.addAnalyzer("title", simple)
-
- self.addAnalyzer("is_book", keyword)
- # shouldn't the title have two forms? _pl and simple?
-
- self.addAnalyzer("themes", simple)
- self.addAnalyzer("themes_pl", polish)
-
- self.addAnalyzer("tag_name", simple)
- self.addAnalyzer("tag_name_pl", polish)
-
- self.addAnalyzer("translators", simple)
-
- self.addAnalyzer("KEYWORD", keyword)
- self.addAnalyzer("SIMPLE", simple)
- self.addAnalyzer("POLISH", polish)
-
-
-class IndexStore(object):
- """
- Provides access to search index.
-
- self.store - lucene index directory
- """
- def __init__(self):
- self.make_index_dir()
- self.store = SimpleFSDirectory(File(settings.SEARCH_INDEX))
-
- def make_index_dir(self):
- try:
- os.makedirs(settings.SEARCH_INDEX)
- except OSError as exc:
- if exc.errno == errno.EEXIST:
- pass
- else: raise
-
-
-class IndexChecker(IndexStore):
- def __init__(self):
- IndexStore.__init__(self)
-
- def check(self):
- checker = CheckIndex(self.store)
- status = checker.checkIndex()
- return status
+class SolrIndex(object):
+ def __init__(self, mode=None):
+ self.index = highlight.HLSolrInterface(settings.SOLR, mode=mode)
class Snippets(object):
"""
SNIPPET_DIR = "snippets"
- def __init__(self, book_id):
+ def __init__(self, book_id, revision=None):
try:
os.makedirs(os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR))
except OSError as exc:
pass
else: raise
self.book_id = book_id
+ self.revision = revision
self.file = None
+ @property
+ def path(self):
+ 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)
+
def open(self, mode='r'):
"""
Open the snippet file. Call .close() afterwards.
"""
if not 'b' in mode:
mode += 'b'
- self.file = open(os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR, str(self.book_id)), mode)
+
+ if 'w' in mode:
+ if os.path.exists(self.path):
+ self.revision = 1
+ while True:
+ if not os.path.exists(self.path):
+ break
+ self.revision += 1
+
+ self.file = open(self.path, mode)
self.position = 0
return self
"""Close snippet file"""
self.file.close()
-
-class BaseIndex(IndexStore):
- """
- Base index class.
- Provides basic operations on index: opening, closing, optimizing.
- """
- def __init__(self, analyzer=None):
- super(BaseIndex, self).__init__()
- self.index = None
- if not analyzer:
- analyzer = WLAnalyzer()
- self.analyzer = analyzer
-
- def open(self, analyzer=None):
- if self.index:
- raise Exception("Index is already opened")
- self.index = IndexWriter(self.store, self.analyzer,\
- IndexWriter.MaxFieldLength.LIMITED)
- return self.index
-
- def optimize(self):
- self.index.optimize()
-
- def close(self):
+ def remove(self):
+ self.revision = None
try:
- self.index.optimize()
- except JavaError, je:
- print "Error during optimize phase, check index: %s" % je
-
- self.index.close()
- self.index = None
-
- def __enter__(self):
- self.open()
- return self
-
- def __exit__(self, type, value, tb):
- self.close()
+ os.unlink(self.path)
+ self.revision = 0
+ while True:
+ self.revision += 1
+ os.unlink(self.path)
+ except OSError:
+ pass
-class Index(BaseIndex):
+class Index(SolrIndex):
"""
Class indexing books.
"""
- def __init__(self, analyzer=None):
- super(Index, self).__init__(analyzer)
+ def __init__(self):
+ super(Index, self).__init__()
- def index_tags(self):
+ def delete_query(self, *queries):
+ """
+ index.delete(queries=...) doesn't work, so let's reimplement it
+ using deletion of list of uids.
+ """
+ uids = set()
+ for q in queries:
+ if isinstance(q, sunburnt.search.LuceneQuery):
+ q = self.index.query(q)
+ q.field_limiter.update(['uid'])
+ st = 0
+ rows = 100
+ while True:
+ ids = q.paginate(start=st, rows=rows).execute()
+ if not len(ids):
+ break
+ for res in ids:
+ uids.add(res['uid'])
+ st+=rows
+ # print "Will delete %s" % ','.join([x for x in uids])
+ if uids:
+ self.index.delete(uids)
+ return True
+ else:
+ return False
+
+ def index_tags(self, *tags, **kw):
"""
Re-index global tag list.
Removes all tags from index, then index them again.
Indexed fields include: id, name (with and without polish stems), category
"""
- q = NumericRangeQuery.newIntRange("tag_id", 0, Integer.MAX_VALUE, True, True)
- self.index.deleteDocuments(q)
-
- for tag in catalogue.models.Tag.objects.all():
- doc = Document()
- doc.add(NumericField("tag_id", Field.Store.YES, True).setIntValue(int(tag.id)))
- doc.add(Field("tag_name", tag.name, Field.Store.NO, Field.Index.ANALYZED))
- doc.add(Field("tag_name_pl", tag.name, Field.Store.NO, Field.Index.ANALYZED))
- doc.add(Field("tag_category", tag.category, Field.Store.NO, Field.Index.NOT_ANALYZED))
- self.index.addDocument(doc)
-
- for pdtag in PDCounterAuthor.objects.all():
- doc = Document()
- doc.add(NumericField("tag_id", Field.Store.YES, True).setIntValue(int(pdtag.id)))
- doc.add(Field("tag_name", pdtag.name, Field.Store.NO, Field.Index.ANALYZED))
- doc.add(Field("tag_name_pl", pdtag.name, Field.Store.NO, Field.Index.ANALYZED))
- doc.add(Field("tag_category", 'pdcounter', Field.Store.NO, Field.Index.NOT_ANALYZED))
- doc.add(Field("is_pdcounter", 'true', Field.Store.YES, Field.Index.NOT_ANALYZED))
- self.index.addDocument(doc)
+ remove_only = kw.get('remove_only', False)
+ # first, remove tags from index.
+ if tags:
+ tag_qs = []
+ for tag in tags:
+ q_id = self.index.Q(tag_id=tag.id)
+
+ if isinstance(tag, PDCounterAuthor):
+ q_cat = self.index.Q(tag_category='pd_author')
+ elif isinstance(tag, PDCounterBook):
+ q_cat = self.index.Q(tag_category='pd_book')
+ else:
+ q_cat = self.index.Q(tag_category=tag.category)
+
+ q_id_cat = self.index.Q(q_id & q_cat)
+ tag_qs.append(q_id_cat)
+ self.delete_query(tag_qs)
+ else: # all
+ q = self.index.Q(tag_id__any=True)
+ self.delete_query(q)
+
+ 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(), \
+ PDCounterBook.objects.all())
+
+ for tag in tags:
+ if isinstance(tag, PDCounterAuthor):
+ doc = {
+ "tag_id": int(tag.id),
+ "tag_name": tag.name,
+ "tag_name_pl": tag.name,
+ "tag_category": 'pd_author',
+ "is_pdcounter": True
+ }
+ elif isinstance(tag, PDCounterBook):
+ doc = {
+ "tag_id": int(tag.id),
+ "tag_name": tag.title,
+ "tag_name_pl": tag.title,
+ "tag_category": 'pd_book',
+ "is_pdcounter": True
+ }
+ else:
+ doc = {
+ "tag_id": int(tag.id),
+ "tag_name": tag.name,
+ "tag_name_pl": tag.name,
+ "tag_category": tag.category,
+ "is_pdcounter": False
+ }
+ doc['uid'] = "tag%d" % tag.id
+ self.index.add(doc)
def create_book_doc(self, book):
"""
Create a lucene document referring book id.
"""
- doc = Document()
- doc.add(NumericField("book_id", Field.Store.YES, True).setIntValue(int(book.id)))
+ doc = {
+ 'book_id': int(book.id),
+ }
if book.parent is not None:
- doc.add(NumericField("parent_id", Field.Store.YES, True).setIntValue(int(book.parent.id)))
+ doc["parent_id"] = int(book.parent.id)
return doc
- def remove_book(self, book):
+ def remove_book(self, book_or_id, remove_snippets=True):
"""Removes a book from search index.
book - Book instance."""
- q = NumericRangeQuery.newIntRange("book_id", book.id, book.id, True, True)
- self.index.deleteDocuments(q)
+ 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 remove_snippets:
+ snippets = Snippets(book_id)
+ snippets.remove()
def index_book(self, book, book_info=None, overwrite=True):
"""
and calls self.index_content() to index the contents of the book.
"""
if overwrite:
- self.remove_book(book)
+ # 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)
- for f in meta_fields.values():
- if isinstance(f, list) or isinstance(f, tuple):
- for elem in f:
- book_doc.add(elem)
- else:
- book_doc.add(f)
+ meta_fields = self.extract_metadata(book, book_info, dc_only=['source_name', 'authors', 'title'])
+ # let's not index it - it's only used for extracting publish date
+ if 'source_name' in meta_fields:
+ del meta_fields['source_name']
- self.index.addDocument(book_doc)
+ for n, f in meta_fields.items():
+ book_doc[n] = f
+
+ book_doc['uid'] = "book%s" % book_doc['book_id']
+ self.index.add(book_doc)
del book_doc
- self.index_content(book, book_fields=[meta_fields['title'], meta_fields['authors'], meta_fields['published_date']])
+ self.index_content(book, book_fields={
+ 'title': meta_fields['title'],
+ 'authors': meta_fields['authors'],
+ 'published_date': meta_fields['published_date']})
master_tags = [
'opowiadanie',
published_date_re = re.compile("([0-9]+)[\]. ]*$")
- def extract_metadata(self, book, book_info=None):
+ def extract_metadata(self, book, book_info=None, dc_only=None):
"""
Extract metadata from book and returns a map of fields keyed by fieldname
"""
if book_info is None:
book_info = dcparser.parse(open(book.xml_file.path))
- fields['slug'] = Field("slug", book.slug, Field.Store.NO, Field.Index.ANALYZED_NO_NORMS)
- fields['tags'] = self.add_gaps([Field("tags", t.name, Field.Store.NO, Field.Index.ANALYZED) for t in book.tags], 'tags')
- fields['is_book'] = Field("is_book", 'true', Field.Store.NO, Field.Index.NOT_ANALYZED)
+ fields['slug'] = book.slug
+ fields['tags'] = [t.name for t in book.tags]
+ fields['is_book'] = True
# validator, name
for field in dcparser.BookInfo.FIELDS:
+ if dc_only and field.name not in dc_only:
+ continue
if hasattr(book_info, field.name):
if not getattr(book_info, field.name):
continue
s = getattr(book_info, field.name)
if field.multiple:
s = ', '.join(s)
- try:
- fields[field.name] = Field(field.name, s, Field.Store.NO, Field.Index.ANALYZED)
- except JavaError as je:
- raise Exception("failed to add field: %s = '%s', %s(%s)" % (field.name, s, je.message, je.args))
+ fields[field.name] = s
elif type_indicator == dcparser.as_person:
p = getattr(book_info, field.name)
if isinstance(p, dcparser.Person):
persons = unicode(p)
else:
persons = ', '.join(map(unicode, p))
- fields[field.name] = Field(field.name, persons, Field.Store.NO, Field.Index.ANALYZED)
+ fields[field.name] = persons
elif type_indicator == dcparser.as_date:
dt = getattr(book_info, field.name)
- fields[field.name] = Field(field.name, "%04d%02d%02d" %\
- (dt.year, dt.month, dt.day), Field.Store.NO, Field.Index.NOT_ANALYZED)
+ fields[field.name] = dt
# get published date
pd = None
if match is not None:
pd = str(match.groups()[0])
if not pd: pd = ""
- fields["published_date"] = Field("published_date", pd, Field.Store.YES, Field.Index.NOT_ANALYZED)
+ fields["published_date"] = pd
return fields
- def add_gaps(self, fields, fieldname):
- """
- Interposes a list of fields with gap-fields, which are indexed spaces and returns it.
- This allows for doing phrase queries which do not overlap the gaps (when slop is 0).
- """
- def gap():
- while True:
- yield Field(fieldname, ' ', Field.Store.NO, Field.Index.NOT_ANALYZED)
- return reduce(lambda a, b: a + b, zip(fields, gap()))[0:-1]
+ # def add_gaps(self, fields, fieldname):
+ # """
+ # Interposes a list of fields with gap-fields, which are indexed spaces and returns it.
+ # This allows for doing phrase queries which do not overlap the gaps (when slop is 0).
+ # """
+ # def gap():
+ # while True:
+ # yield Field(fieldname, ' ', Field.Store.NO, Field.Index.NOT_ANALYZED)
+ # return reduce(lambda a, b: a + b, zip(fields, gap()))[0:-1]
def get_master(self, root):
"""
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.
def add_part(snippets, **fields):
doc = self.create_book_doc(book)
- for f in book_fields:
- doc.add(f)
+ for n, v in book_fields.items():
+ doc[n] = v
+
+ doc['header_index'] = fields["header_index"]
+ doc['header_span'] = 'header_span' in fields and fields['header_span'] or 1
+ doc['header_type'] = fields['header_type']
- doc.add(NumericField('header_index', Field.Store.YES, True).setIntValue(fields["header_index"]))
- doc.add(NumericField("header_span", Field.Store.YES, True)\
- .setIntValue('header_span' in fields and fields['header_span'] or 1))
- doc.add(Field('header_type', fields["header_type"], Field.Store.YES, Field.Index.NOT_ANALYZED))
+ doc['text'] = fields['text']
- doc.add(Field('content', fields["content"], Field.Store.NO, Field.Index.ANALYZED, \
- Field.TermVector.WITH_POSITIONS_OFFSETS))
+ # snippets
+ snip_pos = snippets.add(fields["text"])
- snip_pos = snippets.add(fields["content"])
- doc.add(NumericField("snippets_position", Field.Store.YES, True).setIntValue(snip_pos[0]))
- doc.add(NumericField("snippets_length", Field.Store.YES, True).setIntValue(snip_pos[1]))
+ doc['snippets_position'] = snip_pos[0]
+ doc['snippets_length'] = snip_pos[1]
+ if snippets.revision:
+ doc["snippets_revision"] = snippets.revision
if 'fragment_anchor' in fields:
- doc.add(Field("fragment_anchor", fields['fragment_anchor'],
- Field.Store.YES, Field.Index.NOT_ANALYZED))
+ doc["fragment_anchor"] = fields['fragment_anchor']
if 'themes' in fields:
- themes, themes_pl = zip(*[
- (Field("themes", theme, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS),
- Field("themes_pl", theme, Field.Store.NO, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS))
- for theme in fields['themes']])
-
- themes = self.add_gaps(themes, 'themes')
- themes_pl = self.add_gaps(themes_pl, 'themes_pl')
-
- for t in themes:
- doc.add(t)
- for t in themes_pl:
- doc.add(t)
-
+ doc['themes'] = fields['themes']
+ doc['uid'] = "part%s%s%s" % (doc['header_index'],
+ doc['header_span'],
+ doc.get('fragment_anchor',''))
return doc
def give_me_utf8(s):
def all_content(text):
for frag in fragments.values():
- frag['content'].append(text)
+ frag['text'].append(text)
content.append(text)
handle_text = [all_content]
-
for start, text, end in walker(header, ignore_tags=self.ignore_content_tags):
# handle footnotes
if start is not None and start.tag in self.footnote_tags:
footnote = []
+
def collect_footnote(t):
footnote.append(t)
+
handle_text.append(collect_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,
- content=u''.join(footnote),
- is_footnote=Field("is_footnote", 'true', Field.Store.NO, Field.Index.NOT_ANALYZED))
-
- self.index.addDocument(doc)
+ text=u''.join(footnote),
+ is_footnote=True)
+
+ self.index.add(doc)
#print "@ footnote text: %s" % footnote
footnote = []
-
+
# handle fragments and themes.
if start is not None and start.tag == 'begin':
fid = start.attrib['id'][1:]
- fragments[fid] = {'content': [], '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)
if start.text is not None:
- fragments[fid]['themes'] += map(str.strip, map(give_me_utf8, start.text.split(',')))
+ fragments[fid]['themes'] += map(unicode.strip, map(unicode, (start.text.split(','))))
elif end is not None and end.tag == 'motyw':
handle_text.pop()
header_index=frag['start_section'],
header_span=position - frag['start_section'] + 1,
fragment_anchor=fid,
- content=fix_format(frag['content']),
+ text=fix_format(frag['text']),
themes=frag['themes'])
#print '@ FRAG %s' % frag['content']
- self.index.addDocument(doc)
+ self.index.add(doc)
# Collect content.
hdl(text)
# in the end, add a section text.
- doc = add_part(snippets, header_index=position, header_type=header.tag,
- content=fix_format(content))
+ doc = add_part(snippets, header_index=position,
+ header_type=header.tag, text=fix_format(content))
#print '@ CONTENT: %s' % fix_format(content)
- self.index.addDocument(doc)
+ self.index.add(doc)
finally:
snippets.close()
-def log_exception_wrapper(f):
- def _wrap(*a):
- try:
- f(*a)
- except Exception, e:
- print("Error in indexing thread: %s" % e)
- traceback.print_exc()
- raise e
- return _wrap
-
-
-class ReusableIndex(Index):
- """
- Works like index, but does not close/optimize Lucene index
- until program exit (uses atexit hook).
- This is usefull for importbooks command.
-
- if you cannot rely on atexit, use ReusableIndex.close_reusable() yourself.
- """
- index = None
-
- def open(self, analyzer=None, threads=4):
- if ReusableIndex.index is not None:
- self.index = ReusableIndex.index
- else:
- print("opening index")
- Index.open(self, analyzer)
- ReusableIndex.index = self.index
- atexit.register(ReusableIndex.close_reusable)
-
- # def index_book(self, *args, **kw):
- # job = ReusableIndex.pool.apply_async(log_exception_wrapper(Index.index_book), (self,) + args, kw)
- # ReusableIndex.pool_jobs.append(job)
-
- @staticmethod
- def close_reusable():
- if ReusableIndex.index is not None:
- ReusableIndex.index.optimize()
- ReusableIndex.index.close()
- ReusableIndex.index = None
-
- def close(self):
- pass
-
-
-class JoinSearch(object):
- """
- This mixin could be used to handle block join queries.
- (currently unused)
- """
- def __init__(self, *args, **kw):
- super(JoinSearch, self).__init__(*args, **kw)
-
- def wrapjoins(self, query, fields=[]):
- """
- This functions modifies the query in a recursive way,
- so Term and Phrase Queries contained, which match
- provided fields are wrapped in a BlockJoinQuery,
- and so delegated to children documents.
- """
- if BooleanQuery.instance_(query):
- qs = BooleanQuery.cast_(query)
- for clause in qs:
- clause = BooleanClause.cast_(clause)
- clause.setQuery(self.wrapjoins(clause.getQuery(), fields))
- return qs
- else:
- termset = HashSet()
- query.extractTerms(termset)
- for t in termset:
- t = Term.cast_(t)
- if t.field() not in fields:
- return query
- return BlockJoinQuery(query, self.parent_filter,
- BlockJoinQuery.ScoreMode.Total)
-
- def bsearch(self, query, max_results=50):
- q = self.query(query)
- bjq = BlockJoinQuery(q, self.parent_filter, BlockJoinQuery.ScoreMode.Avg)
-
- tops = self.searcher.search(bjq, max_results)
- bks = []
- for found in tops.scoreDocs:
- doc = self.searcher.doc(found.doc)
- bks.append(catalogue.models.Book.objects.get(id=doc.get("book_id")))
- return (bks, tops.totalHits)
-
class SearchResult(object):
- def __init__(self, search, scoreDocs, score=None, how_found=None, snippets=None, searched=None, tokens_cache=None):
+ def __init__(self, search, doc, how_found=None, snippets=None, searched=None, tokens_cache=None):
if tokens_cache is None: tokens_cache = {}
- if score:
- self._score = score
+ if 'score' in doc:
+ self._score = doc['score']
else:
- self._score = scoreDocs.score
+ self._score = 0
self.boost = 1.0
self._hits = []
self._processed_hits = None # processed hits
- stored = search.searcher.doc(scoreDocs.doc)
- self.book_id = int(stored.get("book_id"))
+ self.book_id = int(doc["book_id"])
- pd = stored.get("published_date")
- if pd is None:
- pd = 0
- self.published_date = int(pd)
+ pd = doc["published_date"]
+ try:
+ self.published_date = int(pd)
+ except ValueError:
+ self.published_date = 0
- header_type = stored.get("header_type")
+ header_type = doc.get("header_type", None)
# we have a content hit in some header of fragment
if header_type is not None:
- sec = (header_type, int(stored.get("header_index")))
- header_span = stored.get('header_span')
+ sec = (header_type, int(doc["header_index"]))
+ header_span = doc['header_span']
header_span = header_span is not None and int(header_span) or 1
- fragment = stored.get("fragment_anchor")
+ fragment = doc.get("fragment_anchor", None)
if snippets:
snippets = snippets.replace("/\n", "\n")
- hit = (sec + (header_span,), fragment, scoreDocs.score, {'how_found': how_found, 'snippets': snippets and [snippets] or []})
+ hit = (sec + (header_span,), fragment, self._score, {'how_found': how_found, 'snippets': snippets and [snippets] or []})
self._hits.append(hit)
return self
def get_book(self):
+ if hasattr(self, '_book'):
+ return self._book
return catalogue.models.Book.objects.get(id=self.book_id)
book = property(get_book)
# to sections and fragments
frags = filter(lambda r: r[FRAGMENT] is not None, self._hits)
+
sect = filter(lambda r: r[FRAGMENT] is None, self._hits)
+
+ # sections not covered by fragments
sect = filter(lambda s: 0 == len(filter(
lambda f: s[POSITION][POSITION_INDEX] >= f[POSITION][POSITION_INDEX]
and s[POSITION][POSITION_INDEX] < f[POSITION][POSITION_INDEX] + f[POSITION][POSITION_SPAN],
hits = []
- # remove duplicate fragments
- fragments = {}
- for f in frags:
- fid = f[FRAGMENT]
- if fid in fragments:
- if fragments[fid][SCORE] >= f[SCORE]:
- continue
- fragments[fid] = f
- frags = fragments.values()
+ def remove_duplicates(lst, keyfn, compare):
+ els = {}
+ for e in lst:
+ eif = keyfn(e)
+ if eif in els:
+ if compare(els[eif], e) >= 1:
+ continue
+ els[eif] = e
+ return els.values()
+
+ # remove fragments with duplicated fid's and duplicated snippets
+ frags = remove_duplicates(frags, lambda f: f[FRAGMENT], lambda a, b: cmp(a[SCORE], b[SCORE]))
+ frags = remove_duplicates(frags, lambda f: f[OTHER]['snippets'] and f[OTHER]['snippets'][0] or f[FRAGMENT],
+ lambda a, b: cmp(a[SCORE], b[SCORE]))
# remove duplicate sections
sections = {}
for f in frags:
try:
- frag = catalogue.models.Fragment.objects.get(anchor=f[FRAGMENT])
+ frag = catalogue.models.Fragment.objects.get(anchor=f[FRAGMENT], book__id=self.book_id)
except catalogue.models.Fragment.DoesNotExist:
# stale index
continue
for r in rl:
if r.book_id in books:
books[r.book_id].merge(r)
- #print(u"already have one with score %f, and this one has score %f" % (books[book.id][0], found.score))
else:
books[r.book_id] = r
return books.values()
return some
-class Search(IndexStore):
+class Search(SolrIndex):
"""
Search facilities.
"""
- def __init__(self, default_field="content"):
+ def __init__(self, default_field="text"):
IndexStore.__init__(self)
self.analyzer = WLAnalyzer() # PolishAnalyzer(Version.LUCENE_34)
# self.analyzer = WLAnalyzer()
- self.searcher = IndexSearcher(self.store, True)
+ reader = IndexReader.open(self.store, True)
+ self.searcher = IndexSearcher(reader)
self.parser = QueryParser(Version.LUCENE_34, default_field,
self.analyzer)
self.parent_filter = TermsFilter()
self.parent_filter.addTerm(Term("is_book", "true"))
+ index_changed.connect(self.reopen)
+
+ def close(self):
+ reader = self.searcher.getIndexReader()
+ self.searcher.close()
+ reader.close()
+ super(Search, self).close()
+ index_changed.disconnect(self.reopen)
+
+ def reopen(self, **unused):
+ reader = self.searcher.getIndexReader()
+ rdr = reader.reopen()
+ if not rdr.equals(reader):
+ log.debug('Reopening index')
+ oldsearch = self.searcher
+ self.searcher = IndexSearcher(rdr)
+ oldsearch.close()
+ reader.close()
def query(self, query):
"""Parse query in default Lucene Syntax. (for humans)
bks.append(catalogue.models.Book.objects.get(id=doc.get("book_id")))
return (bks, tops.totalHits)
- def get_tokens(self, searched, field='content', cached=None):
+ def get_tokens(self, searched, field='text', cached=None):
"""returns tokens analyzed by a proper (for a field) analyzer
argument can be: StringReader, string/unicode, or tokens. In the last case
they will just be returned (so we can reuse tokens, if we don't change the analyzer)
return toks
- def fuzziness(self, fuzzy):
+ @staticmethod
+ def fuzziness(fuzzy):
"""Helper method to sanitize fuzziness"""
if not fuzzy:
return None
else:
return 0.5
- def make_phrase(self, tokens, field='content', slop=2, fuzzy=False):
+ def make_phrase(self, tokens, field='text', slop=2, fuzzy=False):
"""
Return a PhraseQuery with a series of tokens.
"""
fuzzterms = []
while True:
- # print("fuzz %s" % unicode(fuzzterm.term()).encode('utf-8'))
ft = fuzzterm.term()
if ft:
fuzzterms.append(ft)
phrase.add(term)
return phrase
- def make_term_query(self, tokens, field='content', modal=BooleanClause.Occur.SHOULD, fuzzy=False):
+ @staticmethod
+ def make_term_query(tokens, field='text', modal='BooleanClause.Occur.SHOULD XXX', fuzzy=False):
"""
Returns term queries joined by boolean query.
modal - applies to boolean query
Search for book parts which contains a phrase perfectly matching (with a slop of 2, default for make_phrase())
some part/fragment of the book.
"""
- qrys = [self.make_phrase(self.get_tokens(searched), field=fld, fuzzy=fuzzy) for fld in ['content']]
+ qrys = [self.make_phrase(self.get_tokens(searched), field=fld, fuzzy=fuzzy) for fld in ['text']]
flt = None
if hint:
# content only query : themes x content
q = BooleanQuery()
- tokens_pl = self.get_tokens(searched, field='content', cached=tokens_cache)
+ tokens_pl = self.get_tokens(searched, field='text', cached=tokens_cache)
tokens = self.get_tokens(searched, field='SIMPLE', cached=tokens_cache)
# only search in themes when we do not already filter by themes
q.add(BooleanClause(self.make_term_query(tokens_pl, field='themes_pl',
fuzzy=fuzzy), BooleanClause.Occur.MUST))
- q.add(BooleanClause(self.make_term_query(tokens_pl, field='content',
+ q.add(BooleanClause(self.make_term_query(tokens_pl, field='text',
fuzzy=fuzzy), BooleanClause.Occur.SHOULD))
topDocs = self.searcher.search(q, only_in, max_results)
for found in topDocs.scoreDocs:
books.append(SearchResult(self, found, how_found='search_everywhere_themesXcontent', searched=searched))
- print "* %s theme x content: %s" % (searched, books[-1]._hits)
# query themes/content x author/title/tags
q = BooleanQuery()
in_content = BooleanQuery()
in_meta = BooleanQuery()
- for fld in ['themes_pl', 'content']:
+ for fld in ['themes_pl', 'text']:
in_content.add(BooleanClause(self.make_term_query(tokens_pl, field=fld, fuzzy=False), BooleanClause.Occur.SHOULD))
for fld in ['tags', 'authors', 'title']:
topDocs = self.searcher.search(q, only_in, max_results)
for found in topDocs.scoreDocs:
books.append(SearchResult(self, found, how_found='search_everywhere', searched=searched))
- print "* %s scatter search: %s" % (searched, books[-1]._hits)
return books
# return None
- def get_snippets(self, scoreDoc, query, field='content'):
+ def get_snippets(self, scoreDoc, query, field='text'):
"""
Returns a snippet for found scoreDoc.
"""
length = stored.get('snippets_length')
if position is None or length is None:
return None
+ revision = stored.get('snippets_revision')
+ if revision: revision = int(revision)
+
# locate content.
- snippets = Snippets(stored.get('book_id')).open()
+ book_id = int(stored.get('book_id'))
+ snippets = Snippets(book_id, revision=revision)
+
try:
- text = snippets.get((int(position),
- int(length)))
- finally:
- snippets.close()
+ snippets.open()
+ except IOError, e:
+ log.error("Cannot open snippet file for book id = %d [rev=%d], %s" % (book_id, revision, e))
+ return []
+
+ try:
+ try:
+ text = snippets.get((int(position),
+ int(length)))
+ finally:
+ snippets.close()
- tokenStream = TokenSources.getAnyTokenStream(self.searcher.getIndexReader(), scoreDoc.doc, field, self.analyzer)
- # highlighter.getBestTextFragments(tokenStream, text, False, 10)
- snip = highlighter.getBestFragments(tokenStream, text, 3, "...")
+ tokenStream = TokenSources.getAnyTokenStream(self.searcher.getIndexReader(), scoreDoc.doc, field, self.analyzer)
+ # highlighter.getBestTextFragments(tokenStream, text, False, 10)
+ snip = highlighter.getBestFragments(tokenStream, text, 3, "...")
+ except Exception, e:
+ e2 = e
+ if hasattr(e, 'getJavaException'):
+ e2 = unicode(e.getJavaException())
+ raise Exception("Problem fetching snippets for book %d, @%d len=%d" % (book_id, int(position), int(length)),
+ e2)
return snip
@staticmethod
if terms:
return JArray('object')(terms, Term)
- def search_tags(self, query, filters=None, max_results=40, pdcounter=False):
+ def search_tags(self, query, filt=None, max_results=40, pdcounter=False):
"""
Search for Tag objects using query.
"""
if not pdcounter:
- filters = self.chain_filters([filter, self.term_filter(Term('is_pdcounter', 'true'), inverse=True)])
- tops = self.searcher.search(query, filters, max_results)
+ filters = self.chain_filters([filt, self.term_filter(Term('is_pdcounter', 'true'), inverse=True)])
+ tops = self.searcher.search(query, filt, max_results)
tags = []
for found in tops.scoreDocs:
doc = self.searcher.doc(found.doc)
is_pdcounter = doc.get('is_pdcounter')
- if is_pdcounter:
- tag = PDCounterAuthor.objects.get(id=doc.get('tag_id'))
- else:
- tag = catalogue.models.Tag.objects.get(id=doc.get("tag_id"))
- # don't add the pdcounter tag if same tag already exists
- if not (is_pdcounter and filter(lambda t: tag.slug == t.slug, tags)):
+ 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)
+ else:
+ tag = catalogue.models.Tag.objects.get(id=doc.get("tag_id"))
+ # don't add the pdcounter tag if same tag already exists
+
tags.append(tag)
- # print "%s (%d) -> %f" % (tag, tag.id, found.score)
- print 'returning %s' % tags
+
+ except catalogue.models.Tag.DoesNotExist: pass
+ except PDCounterAuthor.DoesNotExist: pass
+ except PDCounterBook.DoesNotExist: pass
+
+ log.debug('search_tags: %s' % tags)
+
return tags
- def search_books(self, query, filter=None, max_results=10):
+ def search_books(self, query, filt=None, max_results=10):
"""
Searches for Book objects using query
"""
bks = []
- tops = self.searcher.search(query, filter, max_results)
+ tops = self.searcher.search(query, filt, max_results)
for found in tops.scoreDocs:
doc = self.searcher.doc(found.doc)
- bks.append(catalogue.models.Book.objects.get(id=doc.get("book_id")))
+ try:
+ bks.append(catalogue.models.Book.objects.get(id=doc.get("book_id")))
+ except catalogue.models.Book.DoesNotExist: pass
return bks
def make_prefix_phrase(self, toks, field):
return only_term
- def hint_tags(self, string, max_results=50, pdcounter=True, prefix=True):
+ def hint_tags(self, string, max_results=50, pdcounter=True, prefix=True, fuzzy=False):
"""
Return auto-complete hints for tags
using prefix search.
if prefix:
q = self.make_prefix_phrase(toks, field)
else:
- q = self.make_term_query(toks, field)
+ q = self.make_term_query(toks, field, fuzzy=fuzzy)
top.add(BooleanClause(q, BooleanClause.Occur.SHOULD))
no_book_cat = self.term_filter(Term("tag_category", "book"), inverse=True)
return self.search_tags(top, no_book_cat, max_results=max_results, pdcounter=pdcounter)
- def hint_books(self, string, max_results=50, prefix=True):
+ def hint_books(self, string, max_results=50, prefix=True, fuzzy=False):
"""
Returns auto-complete hints for book titles
Because we do not index 'pseudo' title-tags.
if prefix:
q = self.make_prefix_phrase(toks, 'title')
else:
- q = self.make_term_query(toks, 'title')
+ q = self.make_term_query(toks, 'title', fuzzy=fuzzy)
return self.search_books(q, self.term_filter(Term("is_book", "true")), max_results=max_results)
@staticmethod
- def chain_filters(filters, op=ChainedFilter.AND):
+ def chain_filters(filters, op='XXXChainedFilter.AND'):
"""
Chains a filter list together
"""
fnp / wolnelektury.git / blobdiff