content: /*
   * Copyright 2022 Alibaba Group Holding Limited.
   *
   * 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 com.alibaba.graphscope.example.traverse;
  
  import com.alibaba.fastjson.JSONObject;
  import com.alibaba.graphscope.context.ParallelContextBase;
  import com.alibaba.graphscope.context.VertexDataContext;
  import com.alibaba.graphscope.ds.GSVertexArray;
  import com.alibaba.graphscope.fragment.IFragment;
  import com.alibaba.graphscope.parallel.ParallelMessageManager;
  
  public class TraverseContext extends VertexDataContext<IFragment<Long, Long, Double, Long>, Long>
          implements ParallelContextBase<Long, Long, Double, Long> {
  
      public GSVertexArray<Long> vertexArray;
      public int maxIteration;
  
      @Override
      public void Init(
              IFragment<Long, Long, Double, Long> frag,
              ParallelMessageManager messageManager,
              JSONObject jsonObject) {
          createFFIContext(frag, Long.class, false);
          // This vertex Array is created by our framework. Data stored in this array will be
          // available
          // after execution, you can receive them by invoking method provided in Python Context.
          vertexArray = data();
          maxIteration = 10;
          if (jsonObject.containsKey("maxIteration")) {
              maxIteration = jsonObject.getInteger("maxIteration");
          }
      }
  
      @Override
      public void Output(IFragment<Long, Long, Double, Long> frag) {
          // You can also write output logic in this function.
      }
  }
  