content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * 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
   *
   * https://opensource.org/licenses/Apache-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.tencent.angel.graph.client.psf.init;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.ml.matrix.MatrixMeta;
  import com.tencent.angel.ml.matrix.psf.update.base.GeneralPartUpdateParam;
  import com.tencent.angel.ml.matrix.psf.update.base.PartitionUpdateParam;
  import com.tencent.angel.ml.matrix.psf.update.base.UpdateParam;
  import com.tencent.angel.ps.storage.vector.element.IElement;
  import com.tencent.angel.psagent.PSAgentContext;
  import com.tencent.angel.psagent.matrix.transport.router.KeyValuePart;
  import com.tencent.angel.psagent.matrix.transport.router.RouterUtils;
  import java.util.ArrayList;
  import java.util.List;
  
  public class GeneralInitParam extends UpdateParam {
    /**
     * Node id to features map
     */
    private long[] nodeIds;
  
    private IElement[] features;
  
    public GeneralInitParam(int matrixId, long[] nodeIds, IElement[] features) {
      super(matrixId);
      this.nodeIds = nodeIds;
      this.features = features;
    }
  
    @Override
    public List<PartitionUpdateParam> split() {
      MatrixMeta meta = PSAgentContext.get().getMatrixMetaManager().getMatrixMeta(matrixId);
      PartitionKey[] parts = meta.getPartitionKeys();
  
      KeyValuePart[] splits = RouterUtils.split(meta, 0, nodeIds, features);
      assert parts.length == splits.length;
  
      List<PartitionUpdateParam> partParams = new ArrayList<>(parts.length);
      for(int i = 0; i < parts.length; i++) {
        if(splits[i] != null && splits[i].size() > 0) {
          partParams.add(new GeneralPartUpdateParam(matrixId, parts[i], splits[i]));
        }
      }
  
      return partParams;
    }
  }
  