package org.apache.commons.beanutils.converters;

import java.util.List;
import org.apache.commons.beanutils.ConversionException;

public final class DoubleArrayConverter extends AbstractArrayConverter {
  public DoubleArrayConverter() {
    this.defaultValue = null;
    this.useDefault = false;
  }
  
  public DoubleArrayConverter(Object defaultValue) {
    this.defaultValue = defaultValue;
    this.useDefault = true;
  }
  
  private static double[] model = new double[0];
  
  public Object convert(Class type, Object value) {
    if (value == null) {
      if (this.useDefault)
        return this.defaultValue; 
      throw new ConversionException("No value specified");
    } 
    if (model.getClass() == value.getClass())
      return value; 
    if (AbstractArrayConverter.strings.getClass() == value.getClass())
      try {
        String[] values = (String[])value;
        double[] results = new double[values.length];
        for (int i = 0; i < values.length; i++)
          results[i] = Double.parseDouble(values[i]); 
        return results;
      } catch (Exception e) {
        if (this.useDefault)
          return this.defaultValue; 
        throw new ConversionException(value.toString(), e);
      }  
    try {
      List list = parseElements(value.toString());
      double[] results = new double[list.size()];
      for (int i = 0; i < results.length; i++)
        results[i] = Double.parseDouble((String)list.get(i)); 
      return results;
    } catch (Exception e) {
      if (this.useDefault)
        return this.defaultValue; 
      throw new ConversionException(value.toString(), e);
    } 
  }
}