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.sona.tree.basic.split;
  
  public class SplitPoint extends SplitEntry {
      private float fvalue;
  
      public SplitPoint() {
          this(-1, 0.0f, 0.0f);
      }
  
      public SplitPoint(int fid, float fvalue, float gain) {
          super(fid, gain);
          this.fvalue = fvalue;
      }
  
      @Override
      public int flowTo(float x) {
          return x < fvalue ? 0 : 1;
      }
  
      @Override
      public int defaultTo() {
          return fvalue > 0.0f ? 0 : 1;
      }
  
      @Override
      public SplitType splitType() {
          return SplitType.SPLIT_POINT;
      }
  
      public float getFvalue() {
          return fvalue;
      }
  
      public void setFvalue(float fvalue) {
          this.fvalue = fvalue;
      }
  
      @Override
      public String toString() {
          return String.format("%s fid[%d] fvalue[%f] gain[%f]",
                  this.splitType(), fid, fvalue, gain);
      }
  }
  