com.yahoo.search.Query.getRanking()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中com.yahoo.search.Query.getRanking方法的一些代码示例，展示了Query.getRanking的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query.getRanking方法的具体详情如下：
包路径：com.yahoo.search.Query
类名称：Query
方法名：getRanking

Query.getRanking介绍

[英]Returns the ranking to be used for this query, never null
[中]返回用于此查询的排名，从不为空

代码示例

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private int getFeatureInt(boolean sendSessionId) {
  2.   int features = QF_PARSEDQUERY | QF_RANKP; // this bitmask means "parsed query" in query packet.
  3.                        // And rank properties. Both are always present
  4.   features |= (query.getRanking().getSorting() != null)   ? QF_SORTSPEC   : 0;
  5.   features |= (query.getRanking().getLocation() != null)  ? QF_LOCATION   : 0;
  6.   features |= (query.hasEncodableProperties())            ? QF_PROPERTIES : 0;
  7.   features |= GroupingExecutor.hasGroupingList(query)     ? QF_GROUPSPEC  : 0;
  8.   features |= (sendSessionId)                             ? QF_SESSIONID  : 0;
  9.   return features;
  10. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. /** Returns the session id of this query, or null if none is assigned */
  2. public SessionId getSessionId() {
  3.   if (requestId == null) return null;
  4.   return new SessionId(requestId, getRanking().getProfile());
  5. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private void setRankingFeature(Query query, String key, Object value) {
  2.   if (value instanceof Tensor)
  3.     query.getRanking().getFeatures().put(key, (Tensor)value);
  4.   else
  5.     query.getRanking().getFeatures().put(key, asString(value, ""));
  6. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. /**
  2.  * Prepares this for binary serialization.
  3.  * <p>
  4.  * This must be invoked after all changes have been made to this query before it is passed
  5.  * on to a receiving backend. Calling it is somewhat expensive, so it should only happen once.
  6.  * If a prepared query is cloned, it stays prepared.
  7.  */
  8. public void prepare() {
  9.   getModel().prepare(getRanking());
  10.   getPresentation().prepare();
  11.   getRanking().prepare();
  12. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private ErrorMessage validate(Query query) {
  2.   String attribute = query.getRanking().getMatchPhase().getAttribute();
  3.   if ( attribute != null && ! validMatchPhaseAttributes.contains(attribute) ) {
  4.     return ErrorMessage.createInvalidQueryParameter("The attribute '" + attribute + "' is not available for match-phase. " +
  5.                             "It must be a single value numeric attribute with fast-search.");
  6.   }
  7.   attribute = query.getRanking().getMatchPhase().getDiversity().getAttribute();
  8.   if (attribute != null && ! validDiversityAttributes.contains(attribute)) {
  9.     return ErrorMessage.createInvalidQueryParameter("The attribute '" + attribute + "' is not available for match-phase diversification. " +
  10.         "It must be a single value numeric or string attribute.");
  11.   }
  12.   return null;
  13. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private void validateQueryCache(Query query) {
  2.   if ( ! query.getRanking().getQueryCache() ) return;
  3.   if (query.getTimeout() <= maxQueryCacheTimeout) return;
  4.   if (query.isTraceable(2)) {
  5.     query.trace("Query timeout (" + query.getTimeout() + " ms) > max query cache timeout (" +
  6.           maxQueryCacheTimeout + " ms). Disabling query cache.", 2);
  7.   }
  8.   query.getRanking().setQueryCache(false);
  9. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. @Override
  2. public Result search(Query query, Execution execution) {
  3.   List<FieldOrder> s = (query.getRanking().getSorting() != null) ? query.getRanking().getSorting().fieldOrders() : null;
  4.   if (s == null) {
  5.     return execution.search(query);
  6.   }
  7.   for (FieldOrder f : s) {
  8.     if (RANK.equals(f.getFieldName())) {
  9.       return execution.search(query);
  10.     }
  11.   }
  12.   query.getRanking().setProfile(UNRANKED);
  13.   return execution.search(query);
  14. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. /**
  2.  * Create an empty result.
  3.  * A source creating a result is <b>required</b> to call
  4.  * {@link #setTotalHitCount} before releasing this result.
  5.  *
  6.  * @param query the query which produced this result
  7.  * @param hits the hit container which this will return from {@link #hits()}
  8.  */
  9. @SuppressWarnings("deprecation")
  10. public Result(Query query, HitGroup hits) {
  11.   super(query);
  12.   if (query==null) throw new NullPointerException("The query reference in a result cannot be null");
  13.   this.hits=hits;
  14.   hits.setQuery(query);
  15.   if (query.getRanking().getSorting() != null) {
  16.     setHitOrderer(new HitSortOrderer(query.getRanking().getSorting()));
  17.   }
  18. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. /** Returns the session id of this query, and creates and assigns it if not already present */
  2. public SessionId getSessionId(String serverId) {
  3.   if (requestId == null)
  4.     requestId = UniqueRequestId.next(serverId);
  5.   return new SessionId(requestId, getRanking().getProfile());
  6. }

代码示例来源：origin: vespa-engine/sample-apps

  1. private void addUserProfileTensorToQuery(Query query, Hit userProfile) {
  2.   Object userItemCf = userProfile.getField("user_item_cf");
  3.   if (userItemCf != null && userItemCf instanceof Tensor) {
  4.     query.getRanking().getFeatures().put("query(user_item_cf)", (Tensor)userItemCf);
  5.   }
  6. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private boolean shouldBeDegraded(Query query, IndexFacts.Session indexFacts) {
  2.   if (query.getRanking().getSorting() == null) return false;
  3.   if (query.getRanking().getSorting().fieldOrders().isEmpty()) return false;
  4.   if ( ! query.getSelect().getGrouping().isEmpty()) return false;
  5.   if ( ! query.properties().getBoolean(DEGRADING, true)) return false;
  6.   Index index = indexFacts.getIndex(query.getRanking().getSorting().fieldOrders().get(0).getFieldName());
  7.   if (index == null) return false;
  8.   if ( ! index.isFastSearch()) return false;
  9.   if ( ! index.isNumerical()) return false;
  10.   return true;
  11. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. static void removeEmptySummaryFeatureFields(Result result) {
  2.   // TODO: Move to some searcher in Vespa backend search chains
  3.   if ( ! result.hits().getQuery().getRanking().getListFeatures())
  4.     for (Iterator<Hit> i = result.hits().unorderedIterator(); i.hasNext();)
  5.       i.next().removeField(Hit.RANKFEATURES_FIELD);
  6. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. /**
  2.  * Returns whether we need to send the query when fetching summaries.
  3.  * This is necessary if the query requests summary features or dynamic snippeting
  4.  */
  5. public boolean summaryNeedsQuery(Query query) {
  6.   if (query.getRanking().getQueryCache()) return false;  // Query is cached in backend
  7.   DocumentDatabase documentDb = getDocumentDatabase(query);
  8.   // Needed to generate a dynamic summary?
  9.   DocsumDefinition docsumDefinition = documentDb.getDocsumDefinitionSet().getDocsum(query.getPresentation().getSummary());
  10.   if (docsumDefinition.isDynamic()) return true;
  11.   // Needed to generate ranking features?
  12.   RankProfile rankProfile = documentDb.rankProfiles().get(query.getRanking().getProfile());
  13.   if (rankProfile == null) return true; // stay safe
  14.   if (rankProfile.hasSummaryFeatures()) return true;
  15.   if (query.getRanking().getListFeatures()) return true;
  16.   // (Don't just add other checks here as there is a return false above)
  17.   return false;
  18. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. public Optional<FillInvoker> getFillInvoker(Query query, VespaBackEndSearcher searcher, DocumentDatabase documentDb) {
  2.   if (query.properties().getBoolean(dispatchSummaries, true)
  3.     && ! searcher.summaryNeedsQuery(query)
  4.     && query.getRanking().getLocation() == null
  5.     && ! searcher.getCacheControl().useCache(query))
  6.   {
  7.     return Optional.of(new RpcFillInvoker(this, documentDb));
  8.   } else {
  9.     return Optional.empty();
  10.   }
  11. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private void setDegradation(Query query) {
  2.   query.trace("Using sorting degrading for performance - totalHits will be wrong. " + 
  3.         "Turn off with sorting.degrading=false.", 2);
  4.   Sorting.FieldOrder primarySort = query.getRanking().getSorting().fieldOrders().get(0); // ensured above
  5.   MatchPhase matchPhase = query.getRanking().getMatchPhase();
  6.   matchPhase.setAttribute(primarySort.getFieldName());
  7.   matchPhase.setAscending(primarySort.getSortOrder() == Sorting.Order.ASCENDING);
  8.   if (matchPhase.getMaxHits() == null)
  9.     matchPhase.setMaxHits(decideDefaultMaxHits(query));
  10. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. /** Returns whether the given query is equal to this */
  2. @Override
  3. public boolean equals(Object other) {
  4.   if (this == other) return true;
  5.   if ( ! (other instanceof Query)) return false;
  6.   Query q = (Query) other;
  7.   if (getOffset() != q.getOffset()) return false;
  8.   if (getHits() != q.getHits()) return false;
  9.   if ( ! getPresentation().equals(q.getPresentation())) return false;
  10.   if ( ! getRanking().equals(q.getRanking())) return false;
  11.   if ( ! getModel().equals(q.getModel())) return false;
  12.   // TODO: Compare property settings
  13.   return true;
  14. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. static int getQueryFlags(Query query) {
  2.   int flags = 0;
  3.   boolean requestCoverage=true; // Always request coverage information
  4.   flags |= 0; // was collapse
  5.   flags |= query.properties().getBoolean(Model.ESTIMATE) ? 0x00000080 : 0;
  6.   flags |= (query.getRanking().getFreshness() != null) ? 0x00002000 : 0;
  7.   flags |= requestCoverage ? 0x00008000 : 0;
  8.   flags |= query.getNoCache() ? 0x00010000 : 0;
  9.   flags |= 0x00020000;                         // was PARALLEL
  10.   flags |= query.properties().getBoolean(Ranking.RANKFEATURES,false) ? 0x00040000 : 0;
  11.   return flags;
  12. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. private Result sortAndTrimResults(Result result, Query q, int offset, int hits, Execution execution) {
  2.   if (q.getRanking().getSorting() != null) {
  3.     execution.fillAttributes(result); // Always correct as we can only sort on attributes
  4.     result.hits().sort();
  5.   }
  6.   result.hits().trim(offset, hits);
  7.   return result;
  8. }

代码示例来源：origin: vespa-engine/sample-apps

  1. @Override
  2. public Result search(Query query, Execution execution) {
  3.   Object tensorProperty = query.properties().get("tensor");
  4.   if (tensorProperty != null) {
  5.     // Construct a Tensor object based on the query parameter
  6.     Tensor tensor = Tensor.from(tensorProperty.toString());
  7.     // Create a new rank feature using this tensor
  8.     query.getRanking().getFeatures().put("query(tensor)", tensor);
  9.     // Set the rank profile to use
  10.     query.properties().set(new CompoundName("ranking"), "simple_tensor_ranking");
  11.   }
  12.   return execution.search(query);
  13. }

代码示例来源：origin: com.yahoo.vespa/container-search

  1. @Override
  2. public com.yahoo.search.Result search(Query query, Execution execution) {
  3.   Location location = query.getRanking().getLocation();
  4.   if (location != null && (location.getAttribute() == null)) {
  5.     IndexFacts facts = execution.context().getIndexFacts();
  6.     List<String> search = facts.newSession(query.getModel().getSources(), query.getModel().getRestrict()).documentTypes();
  7.     for (String sd : search) {
  8.       String defaultPosition = facts.getDefaultPosition(sd);
  9.       if (defaultPosition != null) {
  10.         location.setAttribute(defaultPosition);
  11.       }
  12.     }
  13.     if (location.getAttribute() == null) {
  14.       location.setAttribute(facts.getDefaultPosition(null));
  15.     }
  16.   }
  17.   return execution.search(query);
  18. }

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