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

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

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

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

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

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

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

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

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

private ErrorMessage validate(Query query) {
  String attribute = query.getRanking().getMatchPhase().getAttribute();
  if ( attribute != null && ! validMatchPhaseAttributes.contains(attribute) ) {
    return ErrorMessage.createInvalidQueryParameter("The attribute '" + attribute + "' is not available for match-phase. " +
                            "It must be a single value numeric attribute with fast-search.");
  }
  attribute = query.getRanking().getMatchPhase().getDiversity().getAttribute();
  if (attribute != null && ! validDiversityAttributes.contains(attribute)) {
    return ErrorMessage.createInvalidQueryParameter("The attribute '" + attribute + "' is not available for match-phase diversification. " +
        "It must be a single value numeric or string attribute.");
  }
  return null;
}

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

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

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

@Override
public Result search(Query query, Execution execution) {
  List<FieldOrder> s = (query.getRanking().getSorting() != null) ? query.getRanking().getSorting().fieldOrders() : null;
  if (s == null) {
    return execution.search(query);
  }
  for (FieldOrder f : s) {
    if (RANK.equals(f.getFieldName())) {
      return execution.search(query);
    }
  }
  query.getRanking().setProfile(UNRANKED);
  return execution.search(query);
}

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

/**
 * Create an empty result.
 * A source creating a result is <b>required</b> to call
 * {@link #setTotalHitCount} before releasing this result.
 *
 * @param query the query which produced this result
 * @param hits the hit container which this will return from {@link #hits()}
 */
@SuppressWarnings("deprecation")
public Result(Query query, HitGroup hits) {
  super(query);
  if (query==null) throw new NullPointerException("The query reference in a result cannot be null");
  this.hits=hits;
  hits.setQuery(query);
  if (query.getRanking().getSorting() != null) {
    setHitOrderer(new HitSortOrderer(query.getRanking().getSorting()));
  }
}

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

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

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

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

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

private boolean shouldBeDegraded(Query query, IndexFacts.Session indexFacts) {
  if (query.getRanking().getSorting() == null) return false;
  if (query.getRanking().getSorting().fieldOrders().isEmpty()) return false;
  if ( ! query.getSelect().getGrouping().isEmpty()) return false;
  if ( ! query.properties().getBoolean(DEGRADING, true)) return false;
  Index index = indexFacts.getIndex(query.getRanking().getSorting().fieldOrders().get(0).getFieldName());
  if (index == null) return false;
  if ( ! index.isFastSearch()) return false;
  if ( ! index.isNumerical()) return false;
  return true;
}

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

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

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

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

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

public Optional<FillInvoker> getFillInvoker(Query query, VespaBackEndSearcher searcher, DocumentDatabase documentDb) {
  if (query.properties().getBoolean(dispatchSummaries, true)
    && ! searcher.summaryNeedsQuery(query)
    && query.getRanking().getLocation() == null
    && ! searcher.getCacheControl().useCache(query))
  {
    return Optional.of(new RpcFillInvoker(this, documentDb));
  } else {
    return Optional.empty();
  }
}

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

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

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

/** Returns whether the given query is equal to this */
@Override
public boolean equals(Object other) {
  if (this == other) return true;
  if ( ! (other instanceof Query)) return false;
  Query q = (Query) other;
  if (getOffset() != q.getOffset()) return false;
  if (getHits() != q.getHits()) return false;
  if ( ! getPresentation().equals(q.getPresentation())) return false;
  if ( ! getRanking().equals(q.getRanking())) return false;
  if ( ! getModel().equals(q.getModel())) return false;
  // TODO: Compare property settings
  return true;
}

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

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

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

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

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

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

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

@Override
public com.yahoo.search.Result search(Query query, Execution execution) {
  Location location = query.getRanking().getLocation();
  if (location != null && (location.getAttribute() == null)) {
    IndexFacts facts = execution.context().getIndexFacts();
    List<String> search = facts.newSession(query.getModel().getSources(), query.getModel().getRestrict()).documentTypes();
    for (String sd : search) {
      String defaultPosition = facts.getDefaultPosition(sd);
      if (defaultPosition != null) {
        location.setAttribute(defaultPosition);
      }
    }
    if (location.getAttribute() == null) {
      location.setAttribute(facts.getDefaultPosition(null));
    }
  }
  return execution.search(query);
}

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