imbajin commented on code in PR #2825: URL: https://github.com/apache/incubator-hugegraph/pull/2825#discussion_r2444770365
########## hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/traversers/SameNeighborsBatchAPI.java: ########## @@ -0,0 +1,115 @@ +/* + * 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 + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 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.hugegraph.api.traversers; + +import static org.apache.hugegraph.traversal.algorithm.HugeTraverser.DEFAULT_ELEMENTS_LIMIT; +import static org.apache.hugegraph.traversal.algorithm.HugeTraverser.DEFAULT_MAX_DEGREE; + +import java.util.ArrayList; +import java.util.List; +import java.util.Set; + +import org.apache.hugegraph.util.E; +import org.apache.hugegraph.util.Log; +import org.slf4j.Logger; + +import org.apache.hugegraph.HugeGraph; +import org.apache.hugegraph.api.API; +import org.apache.hugegraph.api.graph.EdgeAPI; +import org.apache.hugegraph.core.GraphManager; +import org.apache.hugegraph.backend.id.Id; +import org.apache.hugegraph.server.RestServer; +import org.apache.hugegraph.structure.HugeVertex; +import org.apache.hugegraph.traversal.algorithm.SameNeighborTraverser; +import org.apache.hugegraph.type.define.Directions; +import com.codahale.metrics.annotation.Timed; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.fasterxml.jackson.databind.ObjectMapper; + +import io.swagger.v3.oas.annotations.tags.Tag; +import jakarta.inject.Singleton; +import jakarta.ws.rs.POST; +import jakarta.ws.rs.Path; +import jakarta.ws.rs.PathParam; +import jakarta.ws.rs.Produces; +import jakarta.ws.rs.core.Context; + +@Path("graphspaces/{graphspace}/graphs/{graph}/traversers/sameneighborsbatch") +@Singleton +@Tag(name = "SameNeighborsBatchAPI") +public class SameNeighborsBatchAPI extends API { + + private static final Logger LOG = Log.logger(RestServer.class); + + @POST + @Timed + @Produces(APPLICATION_JSON_WITH_CHARSET) + public String sameNeighborsBatch(@Context GraphManager manager, + @PathParam("graphspace") String graphSpace, + @PathParam("graph") String graph, + Request req) { + LOG.debug("Graph [{}] get same neighbors batch, '{}'", graph, req.toString()); + + Directions dir = Directions.convert(EdgeAPI.parseDirection(req.direction)); + + ApiMeasurer measure = new ApiMeasurer(); + HugeGraph g = graph(manager, graph); + SameNeighborTraverser traverser = new SameNeighborTraverser(g); + + List<Set<Id>> result = new ArrayList<>(); Review Comment: ⚠️ **Important: Missing validation** No null check for `req.vertexList` before iterating. If the request body is malformed or missing `vertex_list`, this will throw a NullPointerException. **Add validation:** ```java E.checkArgumentNotNull(req.vertexList, "vertex_list cannot be null"); E.checkArgument(!req.vertexList.isEmpty(), "vertex_list cannot be empty"); for (List<Object> vertexPair : req.vertexList) { E.checkArgumentNotNull(vertexPair, "vertex pair cannot be null"); E.checkArgument(vertexPair.size() == 2, "vertex_list size must be 2"); // ... } ``` ########## hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/traversers/SameNeighborsBatchAPI.java: ########## @@ -0,0 +1,115 @@ +/* + * 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 + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 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.hugegraph.api.traversers; + +import static org.apache.hugegraph.traversal.algorithm.HugeTraverser.DEFAULT_ELEMENTS_LIMIT; +import static org.apache.hugegraph.traversal.algorithm.HugeTraverser.DEFAULT_MAX_DEGREE; + +import java.util.ArrayList; +import java.util.List; +import java.util.Set; + +import org.apache.hugegraph.util.E; +import org.apache.hugegraph.util.Log; +import org.slf4j.Logger; + +import org.apache.hugegraph.HugeGraph; +import org.apache.hugegraph.api.API; +import org.apache.hugegraph.api.graph.EdgeAPI; +import org.apache.hugegraph.core.GraphManager; +import org.apache.hugegraph.backend.id.Id; +import org.apache.hugegraph.server.RestServer; +import org.apache.hugegraph.structure.HugeVertex; +import org.apache.hugegraph.traversal.algorithm.SameNeighborTraverser; +import org.apache.hugegraph.type.define.Directions; +import com.codahale.metrics.annotation.Timed; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.fasterxml.jackson.databind.ObjectMapper; + +import io.swagger.v3.oas.annotations.tags.Tag; +import jakarta.inject.Singleton; +import jakarta.ws.rs.POST; +import jakarta.ws.rs.Path; +import jakarta.ws.rs.PathParam; +import jakarta.ws.rs.Produces; +import jakarta.ws.rs.core.Context; + +@Path("graphspaces/{graphspace}/graphs/{graph}/traversers/sameneighborsbatch") +@Singleton +@Tag(name = "SameNeighborsBatchAPI") +public class SameNeighborsBatchAPI extends API { + + private static final Logger LOG = Log.logger(RestServer.class); + + @POST + @Timed + @Produces(APPLICATION_JSON_WITH_CHARSET) + public String sameNeighborsBatch(@Context GraphManager manager, + @PathParam("graphspace") String graphSpace, + @PathParam("graph") String graph, + Request req) { + LOG.debug("Graph [{}] get same neighbors batch, '{}'", graph, req.toString()); + + Directions dir = Directions.convert(EdgeAPI.parseDirection(req.direction)); + + ApiMeasurer measure = new ApiMeasurer(); + HugeGraph g = graph(manager, graph); + SameNeighborTraverser traverser = new SameNeighborTraverser(g); + + List<Set<Id>> result = new ArrayList<>(); + for (List<Object> vertexPair : req.vertexList) { + E.checkArgument(vertexPair.size() == 2, + "vertex_list size must be 2"); + Id sourceId = HugeVertex.getIdValue(vertexPair.get(0)); + Id targetId = HugeVertex.getIdValue(vertexPair.get(1)); + Set<Id> neighbors = traverser.sameNeighbors(sourceId, targetId, dir, + req.label, req.maxDegree, req.limit); + result.add(neighbors); + } + measure.addIterCount(traverser.vertexIterCounter.get(), + traverser.edgeIterCounter.get()); + + return manager.serializer(g, measure.measures()).writeList("same_neighbors", result); + } + + private static class Request { + @JsonProperty("vertex_list") + private List<List<Object>> vertexList; + @JsonProperty("direction") + private String direction; + @JsonProperty("label") + private String label; + @JsonProperty("max_degree") + public long maxDegree = Long.parseLong(DEFAULT_MAX_DEGREE); + @JsonProperty("limit") + public int limit = Integer.parseInt(DEFAULT_ELEMENTS_LIMIT); + + @Override + public String toString() { + ObjectMapper om = new ObjectMapper(); + String vertexStr = ""; + try { + vertexStr = om.writeValueAsString(this.vertexList); + } catch (Exception e) { + } Review Comment: 🧹 **Minor: Typo in format string** Line 109 has an incomplete format string - missing closing brace `}` after `limit=%d`. **Fix:** ```java return String.format("SameNeighborsBatchRequest{vertex=%s,direction=%s,label=%s," + "max_degree=%d,limit=%d}", vertexStr, this.direction, this.label, this.maxDegree, this.limit); ``` -- This is an automated message from the Apache Git Service. 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