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.psf.kcore.readTag;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.ml.matrix.MatrixMeta;
  import com.tencent.angel.ml.matrix.psf.get.base.GeneralPartGetParam;
  import com.tencent.angel.ml.matrix.psf.get.base.GetParam;
  import com.tencent.angel.ml.matrix.psf.get.base.PartitionGetParam;
  import com.tencent.angel.psagent.PSAgentContext;
  import com.tencent.angel.psagent.matrix.transport.router.KeyPart;
  import com.tencent.angel.psagent.matrix.transport.router.RouterUtils;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class ReadTagParam extends GetParam {
  
      private final long[] nodeIds;
  
      private final int rowId;
  
      public ReadTagParam(int matrixId, long[] nodeIds, int rowId) {
          super(matrixId);
          this.nodeIds = nodeIds;
          this.rowId = rowId;
      }
  
      public ReadTagParam() {
          this(-1, null, 0);
      }
  
      public long[] getNodeIds() {
          return nodeIds;
      }
  
      public int getRowId() {
          return rowId;
      }
  
      @Override
      public List<PartitionGetParam> split() {
          MatrixMeta meta = PSAgentContext.get().getMatrixMetaManager().getMatrixMeta(matrixId);
          PartitionKey[] parts = meta.getPartitionKeys();
  
          KeyPart[] nodeIdsParts = RouterUtils.split(meta, rowId, nodeIds, false);
  
          List<PartitionGetParam> partParams = new ArrayList<>(parts.length);
          assert parts.length == nodeIdsParts.length;
          for (int i = 0; i < parts.length; i++) {
              if (nodeIdsParts[i] != null && nodeIdsParts[i].size() > 0) {
                  partParams.add(new GeneralPartGetParam(matrixId, parts[i], nodeIdsParts[i]));
              }
          }
          return partParams;
      }
  
  }
  