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package org.apache.samoa.instances;

/*
 * #%L
 * SAMOA
 * %%
 * Copyright (C) 2014 - 2015 Apache Software Foundation
 * %%
 * 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
 * 
 *      http://www.apache.org/licenses/LICENSE-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.
 * #L%
 */

/**
 * @author abifet
 */
public class DenseInstance extends SingleLabelInstance {

  private static final long serialVersionUID = 280360594027716737L;

  public DenseInstance() {
    // necessary for kryo serializer
  }

  public DenseInstance(double weight, double[] res) {
    super(weight, res);
  }

  public DenseInstance(SingleLabelInstance inst) {
    super(inst);
  }

  public DenseInstance(Instance inst) {
    super((SingleLabelInstance) inst);
  }

  public DenseInstance(double numberAttributes) {
    super((int) numberAttributes);
    // super(1, new double[(int) numberAttributes-1]);
    // Add missing values
    // for (int i = 0; i < numberAttributes-1; i++) {
    // //this.setValue(i, Double.NaN);
    // }

  }

  @Override
  public String toString() {
    StringBuffer text = new StringBuffer();

    for (int i = 0; i < this.instanceData.numAttributes(); i++) {
      if (i > 0) {
        text.append(",");
      }
      text.append(this.value(i));
    }
    text.append(",").append(this.weight());

    return text.toString();
  }
}