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.embedding.line;
  
  import com.tencent.angel.common.ByteBufSerdeUtils;
  import com.tencent.angel.common.StreamSerdeUtils;
  import com.tencent.angel.ps.storage.vector.element.IElement;
  import io.netty.buffer.ByteBuf;
  import java.io.DataInputStream;
  import java.io.DataOutputStream;
  import java.io.IOException;
  
  /**
   * A user-define data type that store node information on PS
   */
  public class LINENode implements IElement {
  
    private float[] inputFeats;
    private float[] outputFeats;
  
    // Use by line with weight
    private transient int[] neighbors;
    private transient float[] weights;
  
    public LINENode(float[] inputFeats, float[] outputFeats) {
      this.inputFeats = inputFeats;
      this.outputFeats = outputFeats;
    }
  
    public LINENode() {
      this(null, null);
    }
  
    public float[] getInputFeats() {
      return inputFeats;
    }
  
    public void setInputFeats(float[] inputFeats) {
      this.inputFeats = inputFeats;
    }
  
    public float[] getOutputFeats() {
      return outputFeats;
    }
  
    public void setOutputFeats(float[] outputFeats) {
      this.outputFeats = outputFeats;
    }
  
    public int[] getNeighbors() {
      return neighbors;
    }
  
    public void setNeighbors(int[] neighbors) {
      this.neighbors = neighbors;
    }
  
    public float[] getWeights() {
      return weights;
    }
  
    public void setWeights(float[] weights) {
      this.weights = weights;
    }
  
    @Override
    public Object deepClone() {
      float[] cloneInputFeats = new float[inputFeats.length];
      System.arraycopy(inputFeats, 0, cloneInputFeats, 0, inputFeats.length);
  
      float[] cloneOutputFeats;
      if (outputFeats != null) {
        cloneOutputFeats = new float[outputFeats.length];
        System.arraycopy(outputFeats, 0, cloneOutputFeats, 0, outputFeats.length);
      }
      return new LINENode(inputFeats, outputFeats);
    }
  
    @Override
    public void serialize(ByteBuf output) {
      ByteBufSerdeUtils.serializeFloats(output, inputFeats);
      if (outputFeats != null) {
        ByteBufSerdeUtils.serializeFloats(output, outputFeats);
      } else {
        ByteBufSerdeUtils.serializeEmptyFloats(output);
      }
    }
  
    @Override
    public void deserialize(ByteBuf input) {
      inputFeats = ByteBufSerdeUtils.deserializeFloats(input);
      outputFeats = ByteBufSerdeUtils.deserializeFloats(input);
      if (outputFeats.length == 0) {
        outputFeats = null;
      }
    }
  
    @Override
    public int bufferLen() {
      return ByteBufSerdeUtils.serializedFloatsLen(inputFeats)
          + (outputFeats != null ? ByteBufSerdeUtils.serializedFloatsLen(outputFeats)
          : ByteBufSerdeUtils.serializedEmptyFloatsLen());
    }
  
    @Override
    public void serialize(DataOutputStream output) throws IOException {
      StreamSerdeUtils.serializeFloats(output, inputFeats);
      if (outputFeats != null) {
        StreamSerdeUtils.serializeFloats(output, outputFeats);
      } else {
        StreamSerdeUtils.serializeEmptyFloats(output);
      }
    }
  
    @Override
    public void deserialize(DataInputStream input) throws IOException {
      inputFeats = StreamSerdeUtils.deserializeFloats(input);
      outputFeats = StreamSerdeUtils.deserializeFloats(input);
      if (outputFeats.length == 0) {
        outputFeats = null;
      }
    }
  
    @Override
    public int dataLen() {
      return bufferLen();
    }
  }
  