TransactionVertices.java
- /*
- * Copyright © 2014 - 2021 Leipzig University (Database Research Group)
- *
- * Licensed 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.gradoop.flink.model.impl.functions.epgm;
- import org.apache.flink.api.common.functions.FlatMapFunction;
- import org.apache.flink.api.java.tuple.Tuple3;
- import org.apache.flink.util.Collector;
- import org.gradoop.common.model.impl.pojo.EPGMEdge;
- import org.gradoop.common.model.impl.pojo.EPGMGraphHead;
- import org.gradoop.common.model.impl.pojo.EPGMVertex;
- import java.util.Set;
- /**
- * {@code (graphHead, {vertex,..}, {edge,..}) => vertex,..}
- *
- * @param <T> tuple type
- */
- public class TransactionVertices<T extends Tuple3<EPGMGraphHead, Set<EPGMVertex>, Set<EPGMEdge>>> implements
- FlatMapFunction<T, EPGMVertex> {
- @Override
- public void flatMap(T graphTriple, Collector<EPGMVertex> collector) throws Exception {
- graphTriple.f1.forEach(collector::collect);
- }
- }