X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/0e8fc93b7943f9a8ebe4cf3f9b609ea14685ed65..cb91a32c4411dcc5bd3b433536fea0dea64ea493:/apps/search/index.py?ds=inline diff --git a/apps/search/index.py b/apps/search/index.py index af3dd9a60..8b0cfb79f 100644 --- a/apps/search/index.py +++ b/apps/search/index.py @@ -1,21 +1,27 @@ # -*- coding: utf-8 -*- from django.conf import settings -from lucene import SimpleFSDirectory, IndexWriter, File, Field, \ +from lucene import SimpleFSDirectory, IndexWriter, CheckIndex, \ + File, Field, Integer, \ NumericField, Version, Document, JavaError, IndexSearcher, \ QueryParser, PerFieldAnalyzerWrapper, \ SimpleAnalyzer, PolishAnalyzer, ArrayList, \ - KeywordAnalyzer, NumericRangeQuery, BooleanQuery, \ - BlockJoinQuery, BlockJoinCollector, TermsFilter, \ + KeywordAnalyzer, NumericRangeQuery, NumericRangeFilter, BooleanQuery, \ + BlockJoinQuery, BlockJoinCollector, Filter, TermsFilter, ChainedFilter, \ HashSet, BooleanClause, Term, CharTermAttribute, \ - PhraseQuery, MultiPhraseQuery, StringReader, TermQuery, BlockJoinQuery, \ - FuzzyQuery, FuzzyTermEnum, Sort, Integer, \ + PhraseQuery, MultiPhraseQuery, StringReader, TermQuery, \ + FuzzyQuery, FuzzyTermEnum, PrefixTermEnum, Sort, Integer, \ SimpleHTMLFormatter, Highlighter, QueryScorer, TokenSources, TextFragment, \ - initVM, CLASSPATH, JArray + BooleanFilter, TermsFilter, FilterClause, QueryWrapperFilter, \ + initVM, CLASSPATH, JArray, JavaError # KeywordAnalyzer + +# Initialize jvm JVM = initVM(CLASSPATH) + import sys import os +import re import errno from librarian import dcparser from librarian.parser import WLDocument @@ -29,8 +35,13 @@ import traceback 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) @@ -44,10 +55,19 @@ class WLAnalyzer(PerFieldAnalyzerWrapper): self.addAnalyzer("publisher", simple) self.addAnalyzer("author", 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("NATURAL", polish) + self.addAnalyzer("POLISH", polish) class IndexStore(object): @@ -64,6 +84,53 @@ class IndexStore(object): else: raise +class IndexChecker(IndexStore): + def __init__(self): + IndexStore.__init__(self) + + def check(self): + checker = CheckIndex(self.store) + status = checker.checkIndex() + return status + + +class Snippets(object): + SNIPPET_DIR = "snippets" + + def __init__(self, book_id): + try: + os.makedirs(os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR)) + except OSError as exc: + if exc.errno == errno.EEXIST: + pass + else: raise + self.book_id = book_id + self.file = None + + def open(self, mode='r'): + if not 'b' in mode: + mode += 'b' + self.file = open(os.path.join(settings.SEARCH_INDEX, self.SNIPPET_DIR, str(self.book_id)), mode) + self.position = 0 + return self + + def add(self, snippet): + txt = snippet.encode('utf-8') + l = len(txt) + self.file.write(txt) + pos = (self.position, l) + self.position += l + return pos + + def get(self, pos): + self.file.seek(pos[0], 0) + txt = self.file.read(pos[1]).decode('utf-8') + return txt + + def close(self): + self.file.close() + + class Index(IndexStore): def __init__(self, analyzer=None): IndexStore.__init__(self) @@ -79,11 +146,30 @@ class Index(IndexStore): IndexWriter.MaxFieldLength.LIMITED) return self.index - def close(self): + def optimize(self): self.index.optimize() + + def close(self): + try: + self.index.optimize() + except JavaError, je: + print "Error during optimize phase, check index: %s" % je + self.index.close() self.index = None + def index_tags(self): + 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(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) + def remove_book(self, book): q = NumericRangeQuery.newIntRange("book_id", book.id, book.id, True, True) self.index.deleteDocuments(q) @@ -92,14 +178,19 @@ class Index(IndexStore): if overwrite: self.remove_book(book) - doc = self.extract_metadata(book) - parts = self.extract_content(book) - block = ArrayList().of_(Document) + book_doc = self.create_book_doc(book) + meta_fields = self.extract_metadata(book) + 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) + + self.index.addDocument(book_doc) + del book_doc - for p in parts: - block.add(p) - block.add(doc) - self.index.addDocuments(block) + self.index_content(book, book_fields=[meta_fields['title'], meta_fields['author']]) master_tags = [ 'opowiadanie', @@ -123,14 +214,14 @@ class Index(IndexStore): return doc def extract_metadata(self, book): - book_info = dcparser.parse(book.xml_file) + fields = {} + book_info = dcparser.parse(open(book.xml_file.path)) print("extract metadata for book %s id=%d, thread%d" % (book.slug, book.id, current_thread().ident)) - doc = self.create_book_doc(book) - doc.add(Field("slug", book.slug, Field.Store.NO, Field.Index.ANALYZED_NO_NORMS)) - doc.add(Field("tags", ','.join([t.name for t in book.tags]), Field.Store.NO, Field.Index.ANALYZED)) - doc.add(Field("is_book", 'true', Field.Store.NO, Field.Index.NOT_ANALYZED)) + 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) # validator, name for field in dcparser.BookInfo.FIELDS: @@ -144,7 +235,7 @@ class Index(IndexStore): if field.multiple: s = ', '.join(s) try: - doc.add(Field(field.name, s, Field.Store.NO, Field.Index.ANALYZED)) + 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)) elif type_indicator == dcparser.as_person: @@ -153,40 +244,32 @@ class Index(IndexStore): persons = unicode(p) else: persons = ', '.join(map(unicode, p)) - doc.add(Field(field.name, persons, Field.Store.NO, Field.Index.ANALYZED)) + fields[field.name] = Field(field.name, persons, Field.Store.NO, Field.Index.ANALYZED) elif type_indicator == dcparser.as_date: dt = getattr(book_info, field.name) - doc.add(Field(field.name, "%04d%02d%02d" % (dt.year, dt.month, dt.day), Field.Store.NO, Field.Index.NOT_ANALYZED)) - return doc + fields[field.name] = Field(field.name, "%04d%02d%02d" %\ + (dt.year, dt.month, dt.day), Field.Store.NO, Field.Index.NOT_ANALYZED) + return fields def get_master(self, root): for master in root.iter(): if master.tag in self.master_tags: return master - def extract_content(self, book): + def add_gaps(self, fields, fieldname): + 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 index_content(self, book, book_fields=[]): wld = WLDocument.from_file(book.xml_file.path) root = wld.edoc.getroot() - # first we build a sequence of top-level items. - # book_id - # header_index - the 0-indexed position of header element. - # content master = self.get_master(root) if master is None: return [] - header_docs = [] - for header, position in zip(list(master), range(len(master))): - if header.tag in self.skip_header_tags: - continue - doc = self.create_book_doc(book) - doc.add(NumericField("header_index", Field.Store.YES, True).setIntValue(position)) - doc.add(Field("header_type", header.tag, Field.Store.YES, Field.Index.NOT_ANALYZED)) - content = u' '.join([t for t in header.itertext()]) - doc.add(Field("content", content, Field.Store.YES, Field.Index.ANALYZED)) - header_docs.append(doc) - def walker(node): yield node, None for child in list(node): @@ -195,52 +278,110 @@ class Index(IndexStore): yield None, node return - # Then we create a document for each fragments - # fragment_anchor - the anchor - # themes - list of themes [not indexed] - fragment_docs = [] - # will contain (framgent id -> { content: [], themes: [] } - fragments = {} - for start, end in walker(master): - if start is not None and start.tag == 'begin': - fid = start.attrib['id'][1:] - fragments[fid] = {'content': [], 'themes': []} - fragments[fid]['content'].append(start.tail) - elif start is not None and start.tag == 'motyw': - fid = start.attrib['id'][1:] - fragments[fid]['themes'].append(start.text) - fragments[fid]['content'].append(start.tail) - elif start is not None and start.tag == 'end': - fid = start.attrib['id'][1:] - if fid not in fragments: - continue # a broken node, skip it - frag = fragments[fid] - del fragments[fid] - - def jstr(l): - return u' '.join(map( - lambda x: x == None and u'(none)' or unicode(x), - l)) - - doc = self.create_book_doc(book) - doc.add(Field("fragment_anchor", fid, + def fix_format(text): + return re.sub("/$", "", text, flags=re.M) + + def add_part(snippets, **fields): + doc = self.create_book_doc(book) + for f in book_fields: + doc.add(f) + + 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.add(Field('content', fields["content"], Field.Store.NO, Field.Index.ANALYZED, \ + Field.TermVector.WITH_POSITIONS_OFFSETS)) + + 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])) + + if 'fragment_anchor' in fields: + doc.add(Field("fragment_anchor", fields['fragment_anchor'], Field.Store.YES, Field.Index.NOT_ANALYZED)) - doc.add(Field("content", - u' '.join(filter(lambda s: s is not None, frag['content'])), - Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS)) - doc.add(Field("themes", - u' '.join(filter(lambda s: s is not None, frag['themes'])), - Field.Store.NO, Field.Index.ANALYZED)) - - fragment_docs.append(doc) - elif start is not None: - for frag in fragments.values(): - frag['content'].append(start.text) - elif end is not None: - for frag in fragments.values(): - frag['content'].append(end.tail) - - return header_docs + fragment_docs + + 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) + + 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: + for header, position in zip(list(master), range(len(master))): + + if header.tag in self.skip_header_tags: + continue + + content = u' '.join([t for t in header.itertext()]) + content = fix_format(content) + + doc = add_part(snippets, header_index=position, header_type=header.tag, content=content) + + self.index.addDocument(doc) + + for start, end in walker(header): + 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]['content'].append(start.tail) + elif start is not None and start.tag == 'motyw': + fid = start.attrib['id'][1:] + if start.text is not None: + fragments[fid]['themes'] += map(str.strip, map(give_me_utf8, start.text.split(','))) + fragments[fid]['content'].append(start.tail) + elif start is not None and start.tag == 'end': + fid = start.attrib['id'][1:] + if fid not in fragments: + continue # a broken node, skip it + frag = fragments[fid] + if frag['themes'] == []: + continue # empty themes list. + del fragments[fid] + + def jstr(l): + return u' '.join(map( + lambda x: x == None and u'(none)' or unicode(x), + l)) + + doc = add_part(snippets, + header_type=frag['start_header'], + header_index=frag['start_section'], + header_span=position - frag['start_section'] + 1, + fragment_anchor=fid, + content=u' '.join(filter(lambda s: s is not None, frag['content'])), + themes=frag['themes']) + + self.index.addDocument(doc) + elif start is not None: + for frag in fragments.values(): + frag['content'].append(start.text) + elif end is not None: + for frag in fragments.values(): + frag['content'].append(end.tail) + finally: + snippets.close() + def __enter__(self): self.open() @@ -356,6 +497,7 @@ class Search(IndexStore): bks.append(catalogue.models.Book.objects.get(id=doc.get("book_id"))) return (bks, tops.totalHits) + def search(self, query, max_results=50): query = self.query(query) query = self.wrapjoins(query, ["content", "themes"]) @@ -390,34 +532,39 @@ class Search(IndexStore): class SearchResult(object): - def __init__(self, searcher, scoreDocs, score=None, highlight_query=None): + def __init__(self, searcher, scoreDocs, score=None, how_found=None, snippets=None): + self.snippets = [] + if score: self.score = score else: self.score = scoreDocs.score - self.fragments = [] - self.scores = {} - self.sections = [] + self.hits = [] stored = searcher.doc(scoreDocs.doc) self.book_id = int(stored.get("book_id")) + header_type = stored.get("header_type") + if not header_type: + return + + sec = (header_type, int(stored.get("header_index"))) + header_span = stored.get('header_span') + header_span = header_span is not None and int(header_span) or 1 + fragment = stored.get("fragment_anchor") - if fragment: - self.fragments.append(fragment) - self.scores[fragment] = scoreDocs.score - header_type = stored.get("header_type") - if header_type: - sec = (header_type, int(stored.get("header_index"))) - self.sections.append(sec) - self.scores[sec] = scoreDocs.score + hit = (sec + (header_span,), fragment, scoreDocs.score, {'how_found': how_found, 'snippets': snippets}) - self.snippets = [] + self.hits.append(hit) - def add_snippets(self, snippets): - self.snippets += snippets + 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)) + self.hits += other.hits + if other.score > self.score: + self.score = other.score return self def get_book(self): @@ -425,27 +572,36 @@ class SearchResult(object): book = property(get_book) - def get_parts(self): - book = self.book - parts = [{"header": s[0], "position": s[1], '_score_key': s} for s in self.sections] \ - + [{"fragment": book.fragments.get(anchor=f), '_score_key':f} for f in self.fragments] + def process_hits(self): + frags = filter(lambda r: r[1] is not None, self.hits) + sect = filter(lambda r: r[1] is None, self.hits) + sect = filter(lambda s: 0 == len(filter( + lambda f: s[0][1] >= f[0][1] and s[0][1] < f[0][1] + f[0][2], + frags)), sect) - parts.sort(lambda a, b: cmp(self.scores[a['_score_key']], self.scores[b['_score_key']])) - print("bookid: %d parts: %s" % (self.book_id, parts)) - return parts + hits = [] - parts = property(get_parts) + for s in sect: + m = {'score': s[2], + 'header_index': s[0][1] + } + m.update(s[3]) + hits.append(m) - 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)) - self.fragments += other.fragments - self.sections += other.sections - self.snippets += other.snippets - self.scores.update(other.scores) - if other.score > self.score: - self.score = other.score - return self + for f in frags: + frag = catalogue.models.Fragment.objects.get(anchor=f[1]) + m = {'score': f[2], + 'fragment': frag, + 'themes': frag.tags.filter(category='theme') + } + m.update(f[3]) + hits.append(m) + + hits.sort(lambda a, b: cmp(a['score'], b['score']), reverse=True) + + print("--- %s" % hits) + + return hits def __unicode__(self): return u'SearchResult(book_id=%d, score=%d)' % (self.book_id, self.score) @@ -466,6 +622,75 @@ class SearchResult(object): return cmp(self.score, other.score) +class Hint(object): + def __init__(self, search): + self.search = search + self.book_tags = {} + self.part_tags = [] + self._books = [] + + def books(self, *books): + self._books = books + + def tags(self, tags): + for t in tags: + if t.category in ['author', 'title', 'epoch', 'genre', 'kind']: + lst = self.book_tags.get(t.category, []) + lst.append(t) + self.book_tags[t.category] = lst + if t.category in ['theme']: + self.part_tags.append(t) + + def tag_filter(self, tags, field='tags'): + q = BooleanQuery() + + for tag in tags: + toks = self.search.get_tokens(tag.name, field=field) + tag_phrase = PhraseQuery() + for tok in toks: + tag_phrase.add(Term(field, tok)) + q.add(BooleanClause(tag_phrase, BooleanClause.Occur.MUST)) + + return QueryWrapperFilter(q) + + def book_filter(self): + tags = reduce(lambda a, b: a + b, self.book_tags.values(), []) + if tags: + return self.tag_filter(tags) + else: + return None + + def part_filter(self): + fs = [] + if self.part_tags: + fs.append(self.tag_filter(self.part_tags, field='themes')) + + if self._books != []: + bf = BooleanFilter() + for b in self._books: + id_filter = NumericRangeFilter.newIntRange('book_id', b.id, b.id, True, True) + bf.add(FilterClause(id_filter, BooleanClause.Occur.SHOULD)) + fs.append(bf) + + return MultiSearch.chain_filters(fs) + + def should_search_for_book(self): + return self._books == [] + + def just_search_in(self, all): + """Holds logic to figure out which indexes should be search, when we have some hinst already""" + some = [] + for field in all: + if field == 'author' and 'author' in self.book_tags: + continue + if field == 'title' and self._books != []: + continue + if (field == 'themes' or field == 'themes_pl') and self.part_tags: + continue + some.append(field) + return some + + class MultiSearch(Search): """Class capable of IMDb-like searching""" def get_tokens(self, searched, field='content'): @@ -531,72 +756,85 @@ class MultiSearch(Search): q.add(BooleanClause(term, modal)) return q - def content_query(self, query): - return BlockJoinQuery(query, self.parent_filter, - BlockJoinQuery.ScoreMode.Total) + # def content_query(self, query): + # return BlockJoinQuery(query, self.parent_filter, + # BlockJoinQuery.ScoreMode.Total) - def search_perfect_book(self, searched, max_results=20, fuzzy=False): - qrys = [self.make_phrase(self.get_tokens(searched, field=fld), field=fld, fuzzy=fuzzy) for fld in ['author', 'title']] + def search_perfect_book(self, searched, max_results=20, fuzzy=False, hint=None): + fields_to_search = ['author', 'title'] + only_in = None + if hint: + if not hint.should_search_for_book(): + return [] + fields_to_search = hint.just_search_in(fields_to_search) + only_in = hint.book_filter() + + qrys = [self.make_phrase(self.get_tokens(searched, field=fld), field=fld, fuzzy=fuzzy) for fld in fields_to_search] books = [] for q in qrys: - top = self.searcher.search(q, max_results) + top = self.searcher.search(q, + self.chain_filters([only_in, self.term_filter(Term('is_book', 'true'))]), + max_results) for found in top.scoreDocs: books.append(SearchResult(self.searcher, found)) return books - def search_perfect_parts(self, searched, max_results=20, fuzzy=False): + def search_perfect_parts(self, searched, max_results=20, fuzzy=False, hint=None): qrys = [self.make_phrase(self.get_tokens(searched), field=fld, fuzzy=fuzzy) for fld in ['content']] + flt = None + if hint: + flt = hint.part_filter() + books = [] for q in qrys: - top = self.searcher.search(q, max_results) + top = self.searcher.search(q, + self.chain_filters([self.term_filter(Term('is_book', 'true'), inverse=True), + flt + ]), + max_results) for found in top.scoreDocs: - books.append(SearchResult(self.searcher, found).add_snippets(self.get_snippets(found, q))) + books.append(SearchResult(self.searcher, found, snippets=self.get_snippets(found, q))) return books - def search_everywhere(self, searched, max_results=20, fuzzy=False): + def search_everywhere(self, searched, max_results=20, fuzzy=False, hint=None): books = [] + only_in = None + + if hint: + only_in = hint.part_filter() # content only query : themes x content q = BooleanQuery() tokens = self.get_tokens(searched) - q.add(BooleanClause(self.make_term_query(tokens, field='themes', fuzzy=fuzzy), BooleanClause.Occur.MUST)) - q.add(BooleanClause(self.make_term_query(tokens, field='content', fuzzy=fuzzy), BooleanClause.Occur.SHOULD)) + if hint is None or hint.just_search_in(['themes_pl']) != []: + q.add(BooleanClause(self.make_term_query(tokens, field='themes_pl', + fuzzy=fuzzy), BooleanClause.Occur.MUST)) - topDocs = self.searcher.search(q, max_results) + q.add(BooleanClause(self.make_term_query(tokens, field='content', + fuzzy=fuzzy), BooleanClause.Occur.SHOULD)) + + topDocs = self.searcher.search(q, only_in, max_results) for found in topDocs.scoreDocs: books.append(SearchResult(self.searcher, found)) - # joined query themes/content x author/title/epochs/genres/kinds + # query themes/content x author/title/tags q = BooleanQuery() in_meta = BooleanQuery() in_content = BooleanQuery() - for fld in ['themes', 'content']: + for fld in ['themes', 'content', 'tags', 'author', 'title']: in_content.add(BooleanClause(self.make_term_query(tokens, field=fld, fuzzy=False), BooleanClause.Occur.SHOULD)) - in_meta.add(BooleanClause(self.make_term_query(self.get_tokens(searched, field='author'), field='author', fuzzy=fuzzy), BooleanClause.Occur.SHOULD)) - - for fld in ['title', 'epochs', 'genres', 'kinds']: - in_meta.add(BooleanClause(self.make_term_query(tokens, field=fld, fuzzy=fuzzy), BooleanClause.Occur.SHOULD)) - - q.add(BooleanClause(in_meta, BooleanClause.Occur.MUST)) - in_content_join = self.content_query(in_content) - q.add(BooleanClause(in_content_join, BooleanClause.Occur.MUST)) - # import pdb; pdb.set_trace() - collector = BlockJoinCollector(Sort.RELEVANCE, 100, True, True) - - self.searcher.search(q, collector) + topDocs = self.searcher.search(q, only_in, max_results) + for found in topDocs.scoreDocs: + books.append(SearchResult(self.searcher, found)) - top_groups = collector.getTopGroups(in_content_join, Sort.RELEVANCE, 0, max_results, 0, True) - if top_groups: - for grp in top_groups.groups: - for part in grp.scoreDocs: - books.append(SearchResult(self.searcher, part, score=grp.maxScore)) return books + def multisearch(self, query, max_results=50): """ @@ -640,9 +878,8 @@ class MultiSearch(Search): return None - - def do_search(self, query, max_results=50, collector=None): - tops = self.searcher.search(query, max_results) + def book_search(self, query, filter=None, max_results=50, collector=None): + tops = self.searcher.search(query, filter, max_results) #tops = self.searcher.search(p_content, max_results) bks = [] @@ -651,17 +888,124 @@ class MultiSearch(Search): b = catalogue.models.Book.objects.get(id=doc.get("book_id")) bks.append(b) print "%s (%d) -> %f" % (b, b.id, found.score) - return (bks, tops.totalHits) + return bks def get_snippets(self, scoreDoc, query, field='content'): htmlFormatter = SimpleHTMLFormatter() highlighter = Highlighter(htmlFormatter, QueryScorer(query)) stored = self.searcher.doc(scoreDoc.doc) - text = stored.get(field) + + # locate content. + snippets = Snippets(stored.get('book_id')).open() + try: + text = snippets.get((int(stored.get('snippets_position')), + int(stored.get('snippets_length')))) + finally: + snippets.close() + tokenStream = TokenSources.getAnyTokenStream(self.searcher.getIndexReader(), scoreDoc.doc, field, self.analyzer) # highlighter.getBestTextFragments(tokenStream, text, False, 10) + # import pdb; pdb.set_trace() snip = highlighter.getBestFragments(tokenStream, text, 3, "...") - print('snips: %s' % snip) return [snip] + + @staticmethod + def enum_to_array(enum): + """ + Converts a lucene TermEnum to array of Terms, suitable for + addition to queries + """ + terms = [] + + while True: + t = enum.term() + if t: + terms.append(t) + if not enum.next(): break + + if terms: + return JArray('object')(terms, Term) + + def search_tags(self, query, filter=None, max_results=40): + tops = self.searcher.search(query, filter, max_results) + + tags = [] + for found in tops.scoreDocs: + doc = self.searcher.doc(found.doc) + tag = catalogue.models.Tag.objects.get(id=doc.get("tag_id")) + tags.append(tag) + print "%s (%d) -> %f" % (tag, tag.id, found.score) + + return tags + + def search_books(self, query, filter=None, max_results=10): + bks = [] + tops = self.searcher.search(query, filter, 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"))) + return bks + + def create_prefix_phrase(self, toks, field): + q = MultiPhraseQuery() + for i in range(len(toks)): + t = Term(field, toks[i]) + if i == len(toks) - 1: + pterms = MultiSearch.enum_to_array(PrefixTermEnum(self.searcher.getIndexReader(), t)) + if pterms: + q.add(pterms) + else: + q.add(t) + else: + q.add(t) + return q + + @staticmethod + def term_filter(term, inverse=False): + only_term = TermsFilter() + only_term.addTerm(term) + + if inverse: + neg = BooleanFilter() + neg.add(FilterClause(only_term, BooleanClause.Occur.MUST_NOT)) + only_term = neg + + return only_term + + def hint_tags(self, string, max_results=50): + toks = self.get_tokens(string, field='SIMPLE') + top = BooleanQuery() + + for field in ['tag_name', 'tag_name_pl']: + q = self.create_prefix_phrase(toks, field) + 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) + + def hint_books(self, string, max_results=50): + toks = self.get_tokens(string, field='SIMPLE') + + q = self.create_prefix_phrase(toks, 'title') + + return self.book_search(q, self.term_filter(Term("is_book", "true")), max_results=max_results) + + @staticmethod + def chain_filters(filters, op=ChainedFilter.AND): + filters = filter(lambda x: x is not None, filters) + if not filters: + return None + chf = ChainedFilter(JArray('object')(filters, Filter), op) + return chf + + def filtered_categories(self, tags): + cats = {} + for t in tags: + cats[t.category] = True + return cats.keys() + + def hint(self): + return Hint(self)