X-Git-Url: https://svn.cri.ensmp.fr/git/Plinn.git/blobdiff_plain/ac347cee296ffa604d899122742f9a5cdfd3b9dc..47c592d60c4673c0dd7ad36b579a7aa47a87529c:/catalog.py diff --git a/catalog.py b/catalog.py index fbe323f..69bb701 100644 --- a/catalog.py +++ b/catalog.py @@ -5,101 +5,350 @@ from Products.CMFCore.interfaces import IIndexableObject from Products.CMFCore.CatalogTool import CatalogTool as BaseCatalogTool from Products.CMFCore.CatalogTool import IndexableObjectWrapper from Products.PageTemplates.PageTemplateFile import PageTemplateFile -from Products.CMFCore.permissions import ModifyPortalContent +from Products.CMFCore.permissions import ModifyPortalContent, ManagePortal from zope.component import queryMultiAdapter from Products.ZCatalog.Catalog import Catalog import transaction from solr import * +# imports for Catalog class +from Products.PluginIndexes.interfaces import ILimitedResultIndex +from Products.ZCatalog.Lazy import LazyMap, LazyCat, LazyValues +from BTrees.IIBTree import intersection, IISet +from BTrees.IIBTree import weightedIntersection +import warnings + +_VOLATILE_SOLR_NAME = '_v_solrConnection' + class SolrTransactionHook : ''' commit solr couplé sur le commit de la ZODB ''' - def __init__(self, connection) : - self.connection = connection + def __init__(self, context, con) : + self.context = context + self.con = con def __call__(self, status) : if status : - self.connection.commit() - self.connection.close() + self.con.commit() + self.con.close() else : - self.connection.close() + self.con.close() + try : + delattr(self.context, _VOLATILE_SOLR_NAME) + except AttributeError : + pass class CatalogTool(BaseCatalogTool) : - meta_type = 'Legivoc Catalog' + meta_type = 'Plinn Catalog' security = ClassSecurityInfo() manage_options = (BaseCatalogTool.manage_options[:5] + ({'label' : 'Solr', 'action' : 'manage_solr'},) + BaseCatalogTool.manage_options[5:]) - manage_solr = PageTemplateFile('www/manage_solr', globals()) + manage_solr = PageTemplateFile('www/manage_solr.pt', globals(), __name__='manage_solr') + def __init__(self, idxs=[]) : super(CatalogTool, self).__init__() - self._catalog = DelegatedCatalog() + self._catalog = DelegatedCatalog(self) self.solr_url = 'http://localhost:8983/solr' self.delegatedIndexes = ('Title', 'Description', 'SearchableText') + security.declarePublic('getDelegatedIndexes') + def getDelegatedIndexes(self) : + """ read the method name """ + return self.delegatedIndexes + + security.declareProtected(ManagePortal, 'setDelegatedIndexes') + def setDelegatedIndexes(self, indexes, REQUEST=None) : + """setDelegatedIndexes documentation""" + self.delegatedIndexes = tuple([i.strip() for i in indexes if i.strip()]) + if REQUEST : + REQUEST.RESPONSE.redirect(self.absolute_url() + '/manage_solr?manage_tabs_message=Saved changes.') + + def _getSolrConnection(self) : + if not hasattr(self, _VOLATILE_SOLR_NAME) : + con = SolrConnection(self.solr_url) + setattr(self, _VOLATILE_SOLR_NAME, con) + txn = transaction.get() + txn.addAfterCommitHook(SolrTransactionHook(self, con)) + return getattr(self, _VOLATILE_SOLR_NAME) + security.declarePrivate('solrAdd') - def solrAdd(self, object, idxs=[], uid=None) : - if IIndexableObject.providedBy(object): - w = object - else: - w = queryMultiAdapter( (object, self), IIndexableObject ) - if w is None: - # BBB - w = IndexableObjectWrapper(object, self) - - uid = uid if uid else self.__url(object) - idxs = idxs if idxs !=[] else self.delegatedIndexes + def solrAdd(self, w, uid, idxs) : + idxs = idxs if idxs else self.delegatedIndexes + # Filter out delegated indexes + idxs = [i for i in idxs if i in self.delegatedIndexes] data = {'id' : uid} for name in idxs : attr = getattr(w, name, '') data[name] = attr() if callable(attr) else attr - c = SolrConnection(self.solr_url) + c = self._getSolrConnection() c.add(**data) - txn = transaction.get() - txn.addAfterCommitHook(SolrTransactionHook(c)) - # PortalCatalog api overloads - security.declareProtected(ModifyPortalContent, 'indexObject') - def indexObject(self, object) : - """ Add to catalog and send to Solr """ - super(CatalogTool, self).indexObject(object) - self.solrAdd(object) - - security.declarePrivate('reindexObject') - def reindexObject(self, object, idxs=[], update_metadata=1, uid=None): - super(CatalogTool, self).reindexObject(object, - idxs=idxs, - update_metadata=update_metadata, - uid=uid) - if idxs != []: + def catalog_object(self, obj, uid=None, idxs=None, update_metadata=1, + pghandler=None): + # Wraps the object with workflow and accessibility + # information just before cataloging. + if IIndexableObject.providedBy(obj): + w = obj + else: + w = queryMultiAdapter( (obj, self), IIndexableObject ) + if w is None: + # BBB + w = IndexableObjectWrapper(obj, self) + + idxs_ = idxs + if idxs: # Filter out invalid indexes. valid_indexes = self._catalog.indexes.keys() - idxs = [i for i in idxs if i in valid_indexes and i in self.delegatedIndexes] - else : - idxs = self.delegatedIndexes + idxs_ = [i for i in idxs if i in valid_indexes] + + super(CatalogTool, self).catalog_object(w, uid, idxs_, update_metadata, pghandler) + self.solrAdd(w, uid, idxs) + + security.declarePrivate('reindexObject') + def reindexObject(self, object, idxs=[], update_metadata=1, uid=None): + """Update catalog after object data has changed. + + The optional idxs argument is a list of specific indexes + to update (all of them by default). + + The update_metadata flag controls whether the object's + metadata record is updated as well. + + If a non-None uid is passed, it will be used as the catalog uid + for the object instead of its physical path. + """ + if uid is None: + uid = self.__url(object) - if idxs : - self.solrAdd(object, idxs=idxs, uid=uid) + self.catalog_object(object, uid, idxs, update_metadata) security.declarePrivate('unindexObject') def unindexObject(self, object): """Remove from catalog. """ super(CatalogTool, self).unindexObject(object) - c = SolrConnection(self.solr_url) + c = self._getSolrConnection() url = self.__url(object) c.delete(id=url) - txn = transaction.get() - txn.addAfterCommitHook(SolrTransactionHook(c)) InitializeClass(CatalogTool) class DelegatedCatalog(Catalog) : '''C'est ici qu'on délègue effectivement à Solr ''' + + def __init__(self, zcat, brains=None) : + Catalog.__init__(self, brains=brains) + self.zcat = zcat + + def delegateSearch(self, query, plan) : + ''' + retours faux : + None signifie : pas de délégation, il faut continuer à interroger les autres index. + IISet() vide : pas de résultat lors de la délégation, on peut arrêter la recherche. + ''' + indexes = set(query.keys()).intersection(set(self.zcat.delegatedIndexes)) + if not indexes : + return None + delegatedQuery = {} + for i in indexes : + delegatedQuery[i] = query.pop(i) + try : plan.remove(i) + except ValueError : pass + c = SolrConnection(self.zcat.solr_url) + q =' AND '.join(['%s:"%s"' % item for item in delegatedQuery.items()]) + resp = c.query(q, fields='id', rows=len(self)) + c.close() + return IISet(filter(None, [self.uids.get(r['id']) for r in resp.results])) + def search(self, query, sort_index=None, reverse=0, limit=None, merge=1): - return Catalog.search(self, query, - sort_index=sort_index, - reverse=reverse, limit=limit, merge=merge) \ No newline at end of file + """Iterate through the indexes, applying the query to each one. If + merge is true then return a lazy result set (sorted if appropriate) + otherwise return the raw (possibly scored) results for later merging. + Limit is used in conjuntion with sorting or scored results to inform + the catalog how many results you are really interested in. The catalog + can then use optimizations to save time and memory. The number of + results is not guaranteed to fall within the limit however, you should + still slice or batch the results as usual.""" + + rs = None # resultset + + # Indexes fulfill a fairly large contract here. We hand each + # index the query mapping we are given (which may be composed + # of some combination of web request, kw mappings or plain old dicts) + # and the index decides what to do with it. If the index finds work + # for itself in the query, it returns the results and a tuple of + # the attributes that were used. If the index finds nothing for it + # to do then it returns None. + + # Canonicalize the request into a sensible query before passing it on + query = self.make_query(query) + + cr = self.getCatalogPlan(query) + cr.start() + + plan = cr.plan() + if not plan: + plan = self._sorted_search_indexes(query) + + # délégation + rs = self.delegateSearch(query, plan) + if rs is not None and not rs : + return LazyCat([]) + + indexes = self.indexes.keys() + for i in plan: + if i not in indexes: + # We can have bogus keys or the plan can contain index names + # that have been removed in the meantime + continue + + index = self.getIndex(i) + _apply_index = getattr(index, "_apply_index", None) + if _apply_index is None: + continue + + cr.start_split(i) + limit_result = ILimitedResultIndex.providedBy(index) + if limit_result: + r = _apply_index(query, rs) + else: + r = _apply_index(query) + + if r is not None: + r, u = r + # Short circuit if empty result + # BBB: We can remove the "r is not None" check in Zope 2.14 + # once we don't need to support the "return everything" case + # anymore + if r is not None and not r: + cr.stop_split(i, result=None, limit=limit_result) + return LazyCat([]) + + # provide detailed info about the pure intersection time + intersect_id = i + '#intersection' + cr.start_split(intersect_id) + # weightedIntersection preserves the values from any mappings + # we get, as some indexes don't return simple sets + if hasattr(rs, 'items') or hasattr(r, 'items'): + _, rs = weightedIntersection(rs, r) + else: + rs = intersection(rs, r) + + cr.stop_split(intersect_id) + + # consider the time it takes to intersect the index result with + # the total resultset to be part of the index time + cr.stop_split(i, result=r, limit=limit_result) + if not rs: + break + else: + cr.stop_split(i, result=None, limit=limit_result) + + # Try to deduce the sort limit from batching arguments + b_start = int(query.get('b_start', 0)) + b_size = query.get('b_size', None) + if b_size is not None: + b_size = int(b_size) + + if b_size is not None: + limit = b_start + b_size + elif limit and b_size is None: + b_size = limit + + if rs is None: + # None of the indexes found anything to do with the query + # We take this to mean that the query was empty (an empty filter) + # and so we return everything in the catalog + warnings.warn('Your query %s produced no query restriction. ' + 'Currently the entire catalog content is returned. ' + 'In Zope 2.14 this will result in an empty LazyCat ' + 'to be returned.' % repr(cr.make_key(query)), + DeprecationWarning, stacklevel=3) + + rlen = len(self) + if sort_index is None: + sequence, slen = self._limit_sequence(self.data.items(), rlen, + b_start, b_size) + result = LazyMap(self.instantiate, sequence, slen, + actual_result_count=rlen) + else: + cr.start_split('sort_on') + result = self.sortResults( + self.data, sort_index, reverse, limit, merge, + actual_result_count=rlen, b_start=b_start, + b_size=b_size) + cr.stop_split('sort_on', None) + elif rs: + # We got some results from the indexes. + # Sort and convert to sequences. + # XXX: The check for 'values' is really stupid since we call + # items() and *not* values() + rlen = len(rs) + if sort_index is None and hasattr(rs, 'items'): + # having a 'items' means we have a data structure with + # scores. Build a new result set, sort it by score, reverse + # it, compute the normalized score, and Lazify it. + + if not merge: + # Don't bother to sort here, return a list of + # three tuples to be passed later to mergeResults + # note that data_record_normalized_score_ cannot be + # calculated and will always be 1 in this case + getitem = self.__getitem__ + result = [(score, (1, score, rid), getitem) + for rid, score in rs.items()] + else: + cr.start_split('sort_on') + + rs = rs.byValue(0) # sort it by score + max = float(rs[0][0]) + + # Here we define our getter function inline so that + # we can conveniently store the max value as a default arg + # and make the normalized score computation lazy + def getScoredResult(item, max=max, self=self): + """ + Returns instances of self._v_brains, or whatever is + passed into self.useBrains. + """ + score, key = item + r=self._v_result_class(self.data[key])\ + .__of__(aq_parent(self)) + r.data_record_id_ = key + r.data_record_score_ = score + r.data_record_normalized_score_ = int(100. * score / max) + return r + + sequence, slen = self._limit_sequence(rs, rlen, b_start, + b_size) + result = LazyMap(getScoredResult, sequence, slen, + actual_result_count=rlen) + cr.stop_split('sort_on', None) + + elif sort_index is None and not hasattr(rs, 'values'): + # no scores + if hasattr(rs, 'keys'): + rs = rs.keys() + sequence, slen = self._limit_sequence(rs, rlen, b_start, + b_size) + result = LazyMap(self.__getitem__, sequence, slen, + actual_result_count=rlen) + else: + # sort. If there are scores, then this block is not + # reached, therefore 'sort-on' does not happen in the + # context of a text index query. This should probably + # sort by relevance first, then the 'sort-on' attribute. + cr.start_split('sort_on') + result = self.sortResults(rs, sort_index, reverse, limit, + merge, actual_result_count=rlen, b_start=b_start, + b_size=b_size) + cr.stop_split('sort_on', None) + else: + # Empty result set + result = LazyCat([]) + cr.stop() + return result