NotEmpty.java

  1. /*
  2.  * Copyright © 2014 - 2021 Leipzig University (Database Research Group)
  3.  *
  4.  * Licensed under the Apache License, Version 2.0 (the "License");
  5.  * you may not use this file except in compliance with the License.
  6.  * You may obtain a copy of the License at
  7.  *
  8.  *     http://www.apache.org/licenses/LICENSE-2.0
  9.  *
  10.  * Unless required by applicable law or agreed to in writing, software
  11.  * distributed under the License is distributed on an "AS IS" BASIS,
  12.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13.  * See the License for the specific language governing permissions and
  14.  * limitations under the License.
  15.  */
  16. package org.gradoop.flink.algorithms.fsm.transactional.common.functions;

  17. import org.apache.flink.api.common.functions.FilterFunction;
  18. import org.gradoop.flink.model.impl.layouts.transactional.tuples.GraphTransaction;

  19. /**
  20.  * {@code (g, V, E) => true, if E not empty}
  21.  */
  22. public class NotEmpty implements FilterFunction<GraphTransaction> {

  23.   @Override
  24.   public boolean filter(GraphTransaction graphTransaction) throws Exception {
  25.     return !graphTransaction.getEdges().isEmpty();
  26.   }
  27. }