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///////////////////////////////////////////////////////////////////////////////
//Copyright (C) 2014 Joliciel Informatique
//
//This file is part of Talismane.
//
//Talismane is free software: you can redistribute it and/or modify
//it under the terms of the GNU Affero General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//(at your option) any later version.
//
//Talismane is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//GNU Affero General Public License for more details.
//
//You should have received a copy of the GNU Affero General Public License
//along with Talismane.  If not, see .
//////////////////////////////////////////////////////////////////////////////
package com.joliciel.talismane.machineLearning.features;

import com.joliciel.talismane.TalismaneException;

/**
 * Rounds a double to the nearest integer.
 * 
 * @author Assaf Urieli
 *
 */
class RoundFeature extends AbstractFeatureimplements IntegerFeature {
  private DoubleFeature featureToRound;

  public RoundFeature(DoubleFeature featureToRound) {
    super();
    this.featureToRound = featureToRound;
    this.setName(this.featureToRound.getName());
  }

  @Override
  public FeatureResult check(T context, RuntimeEnvironment env) throws TalismaneException {
    FeatureResult featureResult = null;

    FeatureResult doubleResult = featureToRound.check(context, env);
    if (doubleResult != null) {
      int intResult = (int) Math.round(doubleResult.getOutcome());
      featureResult = this.generateResult(intResult);
    }
    return featureResult;
  }

  public DoubleFeature getFeatureToRound() {
    return featureToRound;
  }

  public void setFeatureToRound(DoubleFeature featureToRound) {
    this.featureToRound = featureToRound;
  }

}