| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.atlas.discovery; |
| |
| import org.apache.atlas.model.discovery.SearchParameters; |
| import org.apache.atlas.repository.Constants; |
| import org.apache.atlas.repository.graphdb.AtlasIndexQuery; |
| import org.apache.atlas.repository.graphdb.AtlasVertex; |
| import org.apache.atlas.utils.AtlasPerfTracer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| |
| public class FullTextSearchProcessor extends SearchProcessor { |
| private static final Logger LOG = LoggerFactory.getLogger(FullTextSearchProcessor.class); |
| private static final Logger PERF_LOG = AtlasPerfTracer.getPerfLogger("FullTextSearchProcessor"); |
| |
| private final AtlasIndexQuery indexQuery; |
| |
| public FullTextSearchProcessor(SearchContext context) { |
| super(context); |
| |
| SearchParameters searchParameters = context.getSearchParameters(); |
| String queryString = String.format("v.\"%s\":(%s)", Constants.ENTITY_TEXT_PROPERTY_KEY, searchParameters.getQuery()); |
| |
| indexQuery = context.getGraph().indexQuery(Constants.FULLTEXT_INDEX, queryString); |
| } |
| |
| @Override |
| public List<AtlasVertex> execute() { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> FullTextSearchProcessor.execute({})", context); |
| } |
| |
| List<AtlasVertex> ret = new ArrayList<>(); |
| |
| AtlasPerfTracer perf = null; |
| |
| if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) { |
| perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "FullTextSearchProcessor.execute(" + context + ")"); |
| } |
| |
| try { |
| int qryOffset = nextProcessor == null ? context.getSearchParameters().getOffset() : 0; |
| int limit = context.getSearchParameters().getLimit(); |
| int resultIdx = qryOffset; |
| |
| while (ret.size() < limit) { |
| if (context.terminateSearch()) { |
| LOG.warn("query terminated: {}", context.getSearchParameters()); |
| |
| break; |
| } |
| |
| Iterator<AtlasIndexQuery.Result> idxQueryResult = indexQuery.vertices(qryOffset, limit); |
| |
| if (!idxQueryResult.hasNext()) { // no more results from solr - end of search |
| break; |
| } |
| |
| qryOffset += limit; |
| |
| List<AtlasVertex> vertices = getVerticesFromIndexQueryResult(idxQueryResult); |
| |
| vertices = super.filter(vertices); |
| |
| for (AtlasVertex vertex : vertices) { |
| resultIdx++; |
| |
| if (resultIdx < context.getSearchParameters().getOffset()) { |
| continue; |
| } |
| |
| ret.add(vertex); |
| |
| if (ret.size() == limit) { |
| break; |
| } |
| } |
| } |
| } finally { |
| AtlasPerfTracer.log(perf); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== FullTextSearchProcessor.execute({}): ret.size()={}", context, ret.size()); |
| } |
| |
| return ret; |
| } |
| } |