List of usage examples for org.apache.solr.common.params CursorMarkParams CURSOR_MARK_PARAM
String CURSOR_MARK_PARAM
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From source file:bamboo.trove.rule.RuleChangeUpdateManager.java
License:Apache License
private void processQuery(SolrQuery query, WorkLog workLog) throws SolrServerException, IOException { log.debug("Query for rule : {}", query.toString()); Timer.Context context = getTimer(getName() + ".processQuery").time(); // need to commit here so that we can ignore documents just processed client.commit();/*ww w . ja va 2 s . co m*/ boolean more = true; String cursor = CursorMarkParams.CURSOR_MARK_START; while (more) { query.set(CursorMarkParams.CURSOR_MARK_PARAM, cursor); Timer.Context contextQuery = getTimer(getName() + ".query").time(); QueryResponse response = client.query(query); workLog.ranSearch(); SolrDocumentList results = response.getResults(); log.debug("Found {} (of {} docs) in QT = {} ms", results.size(), results.getNumFound(), response.getQTime()); String nextCursor = response.getNextCursorMark(); if (nextCursor == null || cursor.equals(nextCursor)) { more = false; } distributeResponse(results, workLog); cursor = nextCursor; contextQuery.stop(); } // We do this at a higher level too, so this would seem redundant. There is a trade-off. Allowing parallelism // between rules means rules can sometimes be re-processed redundantly. The higher level waitUntilCaughtUp() will // ensure we never process rules at the same time rules are being changed. // By doing a wait here as well however, we can collect accurate statistics about how much actual write activity we // are really generating by passing the workLog into the work pool. // When we have a better awareness of the typical work patterns it might be worth disabling this method call and // then stop collecting the metrics to improve throughput. waitUntilCaughtUp(); context.stop(); }
From source file:com.frank.search.solr.core.query.result.DelegatingCursor.java
License:Apache License
private void load(String cursorMark) { SolrQuery query = referenceQuery.getCopy(); query.set(CursorMarkParams.CURSOR_MARK_PARAM, this.getCursorMark()); PartialResult<T> result = doLoad(query); process(result);//from w w w .j av a 2 s .c om }
From source file:com.hurence.logisland.service.solr.api.SolrClientService.java
License:Apache License
@Override public void copyCollection(String reindexScrollTimeout, String src, String dst) throws DatastoreClientServiceException { SolrQuery solrQuery = new SolrQuery(); solrQuery.setRows(1000);/*w ww . j a v a2 s. c om*/ solrQuery.setQuery("*:*"); solrQuery.addSort("id", SolrQuery.ORDER.asc); // Pay attention to this line String cursorMark = CursorMarkParams.CURSOR_MARK_START; boolean done = false; QueryResponse response; try { do { solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, cursorMark); response = getClient().query(src, solrQuery); List<SolrInputDocument> documents = new ArrayList<>(); for (SolrDocument document : response.getResults()) { SolrInputDocument inputDocument = getConverter().toSolrInputDocument(document); inputDocument.removeField("_version_"); documents.add(inputDocument); } getClient().add(dst, documents); } while (cursorMark.equals(response.getNextCursorMark())); getClient().commit(dst); } catch (Exception e) { throw new DatastoreClientServiceException(e); } }
From source file:it.damore.solr.importexport.App.java
License:Open Source License
/** * @param client//from w w w.j av a 2s .c om * @param outputFile * @throws SolrServerException * @throws IOException */ private static void readAllDocuments(HttpSolrClient client, File outputFile) throws SolrServerException, IOException { SolrQuery solrQuery = new SolrQuery(); solrQuery.setQuery("*:*"); if (config.getFilterQuery() != null) { solrQuery.addFilterQuery(config.getFilterQuery()); } solrQuery.setRows(0); solrQuery.addSort(config.getUniqueKey(), ORDER.asc); // Pay attention to this line String cursorMark = CursorMarkParams.CURSOR_MARK_START; TimeZone.setDefault(TimeZone.getTimeZone("UTC")); // objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, true); DateFormat df = new SimpleDateFormat("YYYY-MM-dd'T'HH:mm:sss'Z'"); objectMapper.setDateFormat(df); objectMapper.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true); QueryResponse r = client.query(solrQuery); long nDocuments = r.getResults().getNumFound(); logger.info("Found " + nDocuments + " documents"); if (!config.getDryRun()) { logger.info("Creating " + config.getFileName()); Set<SkipField> skipFieldsEquals = config.getSkipFieldsSet().stream() .filter(s -> s.getMatch() == MatchType.EQUAL).collect(Collectors.toSet()); Set<SkipField> skipFieldsStartWith = config.getSkipFieldsSet().stream() .filter(s -> s.getMatch() == MatchType.STARTS_WITH).collect(Collectors.toSet()); Set<SkipField> skipFieldsEndWith = config.getSkipFieldsSet().stream() .filter(s -> s.getMatch() == MatchType.ENDS_WITH).collect(Collectors.toSet()); try (PrintWriter pw = new PrintWriter(outputFile)) { solrQuery.setRows(200); boolean done = false; while (!done) { solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, cursorMark); QueryResponse rsp = client.query(solrQuery); String nextCursorMark = rsp.getNextCursorMark(); for (SolrDocument d : rsp.getResults()) { skipFieldsEquals.forEach(f -> d.removeFields(f.getText())); if (skipFieldsStartWith.size() > 0 || skipFieldsEndWith.size() > 0) { Map<String, Object> collect = d.entrySet().stream() .filter(e -> !skipFieldsStartWith.stream() .filter(f -> e.getKey().startsWith(f.getText())).findFirst() .isPresent()) .filter(e -> !skipFieldsEndWith.stream() .filter(f -> e.getKey().endsWith(f.getText())).findFirst().isPresent()) .collect(Collectors.toMap(e -> e.getKey(), e -> e.getValue())); pw.write(objectMapper.writeValueAsString(collect)); } else { pw.write(objectMapper.writeValueAsString(d)); } pw.write("\n"); } if (cursorMark.equals(nextCursorMark)) { done = true; } cursorMark = nextCursorMark; } } } }
From source file:org.apache.drill.exec.store.solr.SolrClientAPIExec.java
License:Apache License
public QueryResponse getSolr4Docs(String solrServer, String solrCoreName, String uniqueKey, List<String> fields, Long solrDocFectCount, String cursorMark, StringBuilder filters, List<SolrAggrParam> solrAggrParams, List<SolrSortParam> solrSortParams, List<String> aggrFieldNames, boolean isGroup, boolean useFacetPivotFromGroupCount) { String solrUrl = solrServer;//w ww. ja v a 2 s . c o m if (solrCoreName != null) { solrUrl = solrServer + solrCoreName; } SolrClient solrClient = new HttpSolrClient(solrUrl); String fieldStr = null; String[] fieldListArr = null; List<String> statsFieldList = Lists.newArrayList(); SolrQuery solrQuery = new SolrQuery().setTermsRegexFlag("case_insensitive").setQuery(uniqueKey + ":*") .setRows(0); if (filters.length() > 0) { solrQuery.setParam("fq", filters.toString()); SolrClientAPIExec.logger.debug("Filter query [ " + filters.toString() + " ]"); } if (!fields.isEmpty()) { fieldStr = Joiner.on(",").join(fields); solrQuery.setParam("fl", fieldStr); solrQuery.setRows(solrDocFectCount.intValue()); SolrClientAPIExec.logger.debug("Response field list [" + fieldStr + "]"); } // facet.pivot={!stats=s1}category,manufacturer // stats.field={!key=avg_price tag=s1 mean=true}price // stats.field={!tag=s1 min=true max=true}user_rating if (solrAggrParams != null && !solrAggrParams.isEmpty() && !useFacetPivotFromGroupCount) { solrQuery.setGetFieldStatistics(true); for (SolrAggrParam solrAggrParam : solrAggrParams) { String statsField = solrAggrParam.getFieldName(); if (!fields.contains(statsField)) { statsField = uniqueKey; } if (!statsFieldList.contains(statsField)) { statsFieldList.add(statsField); } fields.remove(statsField); } if (!fields.isEmpty()) { fieldListArr = fields.toArray(new String[fields.size()]); } for (String statsField : statsFieldList) { solrQuery.setGetFieldStatistics(statsField); SolrClientAPIExec.logger.debug("Adding stats field parameter.. [ " + statsField + " ]"); if (isGroup) { List<String> groupFields = Lists.newArrayList(); for (String aggrField : aggrFieldNames) { if (fields.contains(aggrField)) { groupFields.add(aggrField); } } SolrClientAPIExec.logger.debug("Adding stats facet parameters.. [ " + groupFields + " ]"); solrQuery.addStatsFieldFacets(statsField, groupFields.toArray(new String[groupFields.size()])); } } solrQuery.setRows(0); } else if (isGroup) { fieldListArr = fields.toArray(new String[fields.size()]); solrQuery.setFacet(true); if (fields.size() == 1) { solrQuery.addFacetField(fieldListArr); solrQuery.setFacetLimit(-1); } else { solrQuery.addFacetPivotField(Joiner.on(",").join(fields)); } solrQuery.setRows(0); solrQuery.setFacetMinCount(1); // solrQuery.set(GroupParams.GROUP, true); // solrQuery.set(GroupParams.GROUP_FIELD, fieldListArr); // solrQuery.set(GroupParams.GROUP_MAIN, true); // solrQuery.set(GroupParams.GROUP_FORMAT, "simple"); // solrQuery.set("group.ngroups", "true"); } if (!solrSortParams.isEmpty()) { for (SolrSortParam solrSortParam : solrSortParams) { String solrSortField = solrSortParam.getSortFieldName(); ORDER solrSortDir = solrSortParam.getSortDir(); solrQuery.addSort(solrSortField, solrSortDir); } } else { solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, cursorMark); solrQuery.setSort(SolrQuery.SortClause.desc(uniqueKey)); } QueryResponse rsp = null; try { SolrClientAPIExec.logger .info("Submitting Query :" + solrServer + "/select" + solrQuery.toQueryString()); rsp = solrClient.query(solrQuery); SolrClientAPIExec.logger.info("Response recieved from [ " + solrServer + " ] core [ " + solrCoreName + " ] in " + rsp.getQTime() + " MS."); } catch (SolrServerException | IOException e) { SolrClientAPIExec.logger .debug("Error occured while fetching results from solr server " + e.getMessage()); } finally { try { solrClient.close(); } catch (IOException e) { SolrClientAPIExec.logger .debug("Error occured while closing connection of solr server " + e.getMessage()); } } return rsp; }
From source file:org.apache.drill.exec.store.solr.SolrClientAPIExec.java
License:Apache License
public QueryResponse getSolrDocs(String solrServer, String solrCoreName, String uniqueKey, List<String> fields, Long solrDocFectCount, String cursorMark, StringBuilder filters, List<SolrAggrParam> solrAggrParams, List<SolrSortParam> solrSortParams, List<String> aggrFieldNames, boolean isGroup, boolean isCountOnlyQuery) { String solrUrl = solrServer;// w w w . j a va 2 s . c om if (solrCoreName != null) { solrUrl = solrServer + solrCoreName; } SolrClient solrClient = new HttpSolrClient(solrUrl); String fieldStr = null; String[] fieldListArr = null; List<String> statsFieldList = Lists.newArrayList(); SolrQuery solrQuery = new SolrQuery().setQuery("{!cache=false}" + uniqueKey + ":*").setRows(0); if (filters.length() > 0) { solrQuery.setParam("fq", filters.toString()); SolrClientAPIExec.logger.debug("Filter query [ " + filters.toString() + " ]"); } if (!fields.isEmpty()) { fieldStr = Joiner.on(",").join(fields); solrQuery.setParam("fl", fieldStr); solrQuery.setRows(solrDocFectCount.intValue()); SolrClientAPIExec.logger.debug("Response field list [" + fieldStr + "]"); } if (solrAggrParams != null && !solrAggrParams.isEmpty() && !isCountOnlyQuery) { solrQuery.setGetFieldStatistics(true); String referenceToStatsTag = "{!stats=t1}"; String statsTag = "{!tag=t1}"; for (SolrAggrParam solrAggrParam : solrAggrParams) { String statsField = solrAggrParam.getFieldName(); if (!fields.contains(statsField)) { statsField = uniqueKey; } if (!statsFieldList.contains(statsField)) { statsFieldList.add(statsField); } fields.remove(statsField); } if (!fields.isEmpty()) { fieldListArr = fields.toArray(new String[fields.size()]); } SolrClientAPIExec.logger.debug("Adding stats field parameter.." + statsFieldList + ""); if (isGroup) { List<String> groupFields = Lists.newArrayList(); solrQuery.addGetFieldStatistics(statsTag + Joiner.on(",").join(statsFieldList)); for (String aggrField : fields) { if (fields.contains(aggrField)) { groupFields.add(aggrField); } } if (groupFields.size() == 1) { SolrClientAPIExec.logger.debug("Adding stats facet parameters.." + groupFields + ""); for (String statsField : statsFieldList) { solrQuery.addStatsFieldFacets(statsField, groupFields.toArray(new String[groupFields.size()])); } } else { SolrClientAPIExec.logger.debug("Adding facet pivot parameters.." + groupFields + ""); solrQuery.addFacetPivotField(referenceToStatsTag + Joiner.on(",").join(groupFields)); solrQuery.setFacetLimit(-1); } } else { for (String statsField : statsFieldList) { solrQuery.setGetFieldStatistics(statsField); } } solrQuery.setRows(0); } else if (isGroup) { fieldListArr = fields.toArray(new String[fields.size()]); solrQuery.setFacet(true); if (fields.size() == 1) { solrQuery.addFacetField(fieldListArr); solrQuery.setFacetLimit(-1); } else { solrQuery.addFacetPivotField(Joiner.on(",").join(fields)); } solrQuery.setRows(0); solrQuery.setFacetMinCount(1); solrQuery.setFacetLimit(-1); } else { solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, cursorMark); solrQuery.addSort(SolrQuery.SortClause.desc(uniqueKey)); } if (!solrSortParams.isEmpty()) { for (SolrSortParam solrSortParam : solrSortParams) { String solrSortField = solrSortParam.getSortFieldName(); ORDER solrSortDir = solrSortParam.getSortDir(); solrQuery.addSort(solrSortField, solrSortDir); } } QueryResponse rsp = null; try { SolrClientAPIExec.logger.info("Submitting Query :" + solrUrl + "/select" + solrQuery.toQueryString()); rsp = solrClient.query(solrQuery); SolrClientAPIExec.logger.info("Response recieved from [ " + solrServer + " ] core [ " + solrCoreName + " ] in " + rsp.getQTime() + " MS."); } catch (SolrServerException | IOException e) { SolrClientAPIExec.logger .debug("Error occured while fetching results from solr server " + e.getMessage()); } finally { try { solrClient.close(); } catch (IOException e) { SolrClientAPIExec.logger .debug("Error occured while closing connection of solr server " + e.getMessage()); } } return rsp; }
From source file:org.apache.metron.solr.dao.SolrMetaAlertSearchDao.java
License:Apache License
@Override public SearchResponse getAllMetaAlertsForAlert(String guid) throws InvalidSearchException { if (guid == null || guid.trim().isEmpty()) { throw new InvalidSearchException("Guid cannot be empty"); }//from w ww. j ava2s . c om // Searches for all alerts containing the meta alert guid in it's "metalerts" array // The query has to match the parentFilter to avoid errors. Guid must also be explicitly // included. String activeClause = MetaAlertConstants.STATUS_FIELD + ":" + MetaAlertStatus.ACTIVE.getStatusString(); String guidClause = Constants.GUID + ":" + guid; String fullClause = "{!parent which=" + activeClause + "}" + guidClause; String metaalertTypeClause = config.getSourceTypeField() + ":" + MetaAlertConstants.METAALERT_TYPE; SolrQuery solrQuery = new SolrQuery().setQuery(fullClause) .setFields("*", "[child parentFilter=" + metaalertTypeClause + " limit=999]") .addSort(Constants.GUID, SolrQuery.ORDER.asc); // Just do basic sorting to track where we are // Use Solr's Cursors to handle the paging, rather than doing it manually. List<SearchResult> allResults = new ArrayList<>(); try { String cursorMark = CursorMarkParams.CURSOR_MARK_START; boolean done = false; while (!done) { solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, cursorMark); QueryResponse rsp = solrClient.query(METAALERTS_COLLECTION, solrQuery); String nextCursorMark = rsp.getNextCursorMark(); rsp.getResults().stream() .map(solrDocument -> SolrUtilities.getSearchResult(solrDocument, null, solrSearchDao.getAccessConfig().getIndexSupplier())) .forEachOrdered(allResults::add); if (cursorMark.equals(nextCursorMark)) { done = true; } cursorMark = nextCursorMark; } } catch (IOException | SolrServerException e) { throw new InvalidSearchException("Unable to complete search", e); } SearchResponse searchResponse = new SearchResponse(); searchResponse.setResults(allResults); searchResponse.setTotal(allResults.size()); return searchResponse; }
From source file:org.apache.nifi.processors.solr.GetSolr.java
License:Apache License
@Override public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException { final ComponentLog logger = getLogger(); final AtomicBoolean continuePaging = new AtomicBoolean(true); final SolrQuery solrQuery = new SolrQuery(); try {/*from ww w .jav a 2s.c o m*/ if (id_field == null) { id_field = getFieldNameOfUniqueKey(); } final String dateField = context.getProperty(DATE_FIELD).getValue(); final Map<String, String> stateMap = new HashMap<String, String>(); stateMap.putAll(context.getStateManager().getState(Scope.CLUSTER).toMap()); solrQuery.setQuery("*:*"); final String query = context.getProperty(SOLR_QUERY).getValue(); if (!StringUtils.isBlank(query) && !query.equals("*:*")) { solrQuery.addFilterQuery(query); } final StringBuilder automatedFilterQuery = (new StringBuilder()).append(dateField).append(":[") .append(stateMap.get(STATE_MANAGER_FILTER)).append(" TO *]"); solrQuery.addFilterQuery(automatedFilterQuery.toString()); final List<String> fieldList = new ArrayList<String>(); final String returnFields = context.getProperty(RETURN_FIELDS).getValue(); if (!StringUtils.isBlank(returnFields)) { fieldList.addAll(Arrays.asList(returnFields.trim().split("[,]"))); if (!fieldList.contains(dateField)) { fieldList.add(dateField); dateFieldNotInSpecifiedFieldsList.set(true); } for (String returnField : fieldList) { solrQuery.addField(returnField.trim()); } } solrQuery.setParam(CursorMarkParams.CURSOR_MARK_PARAM, stateMap.get(STATE_MANAGER_CURSOR_MARK)); solrQuery.setRows(context.getProperty(BATCH_SIZE).asInteger()); final StringBuilder sortClause = (new StringBuilder()).append(dateField).append(" asc,") .append(id_field).append(" asc"); solrQuery.setParam("sort", sortClause.toString()); while (continuePaging.get()) { final QueryRequest req = new QueryRequest(solrQuery); if (isBasicAuthEnabled()) { req.setBasicAuthCredentials(getUsername(), getPassword()); } logger.debug(solrQuery.toQueryString()); final QueryResponse response = req.process(getSolrClient()); final SolrDocumentList documentList = response.getResults(); if (response.getResults().size() > 0) { final SolrDocument lastSolrDocument = documentList.get(response.getResults().size() - 1); final String latestDateValue = df.format(lastSolrDocument.get(dateField)); final String newCursorMark = response.getNextCursorMark(); solrQuery.setParam(CursorMarkParams.CURSOR_MARK_PARAM, newCursorMark); stateMap.put(STATE_MANAGER_CURSOR_MARK, newCursorMark); stateMap.put(STATE_MANAGER_FILTER, latestDateValue); FlowFile flowFile = session.create(); flowFile = session.putAttribute(flowFile, "solrQuery", solrQuery.toString()); if (context.getProperty(RETURN_TYPE).getValue().equals(MODE_XML.getValue())) { if (dateFieldNotInSpecifiedFieldsList.get()) { for (SolrDocument doc : response.getResults()) { doc.removeFields(dateField); } } flowFile = session.write(flowFile, SolrUtils.getOutputStreamCallbackToTransformSolrResponseToXml(response)); flowFile = session.putAttribute(flowFile, CoreAttributes.MIME_TYPE.key(), "application/xml"); } else { final RecordSetWriterFactory writerFactory = context.getProperty(RECORD_WRITER) .asControllerService(RecordSetWriterFactory.class); final RecordSchema schema = writerFactory.getSchema(null, null); final RecordSet recordSet = SolrUtils.solrDocumentsToRecordSet(response.getResults(), schema); final StringBuffer mimeType = new StringBuffer(); flowFile = session.write(flowFile, new OutputStreamCallback() { @Override public void process(final OutputStream out) throws IOException { try { final RecordSetWriter writer = writerFactory.createWriter(getLogger(), schema, out); writer.write(recordSet); writer.flush(); mimeType.append(writer.getMimeType()); } catch (SchemaNotFoundException e) { throw new ProcessException("Could not parse Solr response", e); } } }); flowFile = session.putAttribute(flowFile, CoreAttributes.MIME_TYPE.key(), mimeType.toString()); } session.transfer(flowFile, REL_SUCCESS); } continuePaging.set(response.getResults().size() == Integer .parseInt(context.getProperty(BATCH_SIZE).getValue())); } context.getStateManager().setState(stateMap, Scope.CLUSTER); } catch (SolrServerException | SchemaNotFoundException | IOException e) { context.yield(); session.rollback(); logger.error("Failed to execute query {} due to {}", new Object[] { solrQuery.toString(), e }, e); throw new ProcessException(e); } catch (final Throwable t) { context.yield(); session.rollback(); logger.error("Failed to execute query {} due to {}", new Object[] { solrQuery.toString(), t }, t); throw t; } }
From source file:org.geotools.data.solr.SolrFeatureReader.java
License:Open Source License
/** * Creates the feature reader for SOLR store <br> * The feature reader use SOLR CURSOR to paginate request, so multiple SOLR query will be * executed//from w w w . j a v a 2 s .c o m * * @param featureType the feature type to query * @param solrUrl the URL of SOLR server * @param solrQuery the SOLR query to execute * @param solrDataStore the SOLR store * @throws SolrServerException */ public SolrFeatureReader(SimpleFeatureType featureType, HttpSolrServer server, SolrQuery solrQuery, SolrDataStore solrDataStore) throws SolrServerException { this.featureType = featureType; this.solrQuery = solrQuery; this.wktReader = new WKTReader(); this.solrDataStore = solrDataStore; this.pkey = solrDataStore.getPrimaryKey(featureType.getTypeName()); this.builder = new SimpleFeatureBuilder(featureType); this.server = server; // Add always pk as field if not already present if (solrQuery.getFields() != null && !solrQuery.getFields().contains(pkey.getName())) { solrQuery.addField(pkey.getName()); } // Can't use pagination with start, then first query for cursor mark of start if (solrQuery.getStart() != null && solrQuery.getStart() > 0) { cursorMark = getCursorMarkForStart(server, solrQuery); } else { cursorMark = CursorMarkParams.CURSOR_MARK_START; } solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, cursorMark); QueryResponse rsp = server.query(solrQuery); if (this.solrDataStore.getLogger().isLoggable(Level.FINE)) { this.solrDataStore.getLogger().log(Level.FINE, "SOLR query done: " + solrQuery.toString()); } this.solrDocIterator = rsp.getResults().iterator(); nextCursorMark = rsp.getNextCursorMark(); counter = 0; }
From source file:org.geotools.data.solr.SolrFeatureReader.java
License:Open Source License
private String getCursorMarkForStart(HttpSolrServer server, SolrQuery solrQuery) throws SolrServerException { Integer prevRows = solrQuery.getRows(); solrQuery.setRows(solrQuery.getStart()); solrQuery.setStart(0);/* ww w .j av a2s . c o m*/ solrQuery.set(CursorMarkParams.CURSOR_MARK_PARAM, CursorMarkParams.CURSOR_MARK_START); QueryResponse rsp = server.query(solrQuery); if (this.solrDataStore.getLogger().isLoggable(Level.FINE)) { this.solrDataStore.getLogger().log(Level.FINE, "SOLR query done: " + solrQuery.toString()); } String nextC = rsp.getNextCursorMark(); solrQuery.setRows(prevRows); return nextC; }