Android Open Source - GeoTagger Data Binder

From Project

Back to project page GeoTagger.

License

The source code is released under:

GNU General Public License

If you think the Android project GeoTagger listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package horizon.geotagger.server;
// w w w .j av a  2 s .c o  m
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;

public class DataBinder
{
  public void bind(Object o, Map<String, String[]> params)
  {
    Class<?> clazz = o.getClass();
    for(Field field : clazz.getDeclaredFields())
    {
      String name = field.getName();
      if(!params.containsKey(name))
        throw new RuntimeException("Required parameter '" 
            + name + "' was not provided");
      Object value = cast(field, params.get(name));
      try
      {
        set(clazz, field, o, value);
      }
      catch(Exception e)
      {
        throw new RuntimeException("Unable to bind parameter '" 
            + name + "'", e);
      }
    }
  }
  
  private Object cast(Field field, String value[])
  {
    if(value == null || value.length == 0)
      return null;
    Class<?> clazz = field.getType();
    if(clazz.isPrimitive() && !clazz.isArray())
    {
      if(value[0] == null || value[0].length() == 0)
        return null;
      if(clazz == Boolean.TYPE)
        return Boolean.parseBoolean(value[0]);
      if(clazz == Byte.TYPE)
        return Byte.parseByte(value[0]);
      if(clazz == Character.TYPE)
        return value[0].charAt(0);
      if(clazz == Double.TYPE)
        return Double.parseDouble(value[0]);
      if(clazz == Float.TYPE)
        return Float.parseFloat(value[0]);
      if(clazz == Integer.TYPE)
        return Integer.parseInt(value[0]);
      if(clazz == Long.TYPE)
        return Long.parseLong(value[0]);
      if(clazz == Short.TYPE)
        return Short.parseShort(value[0]);
    }
    
    throw new RuntimeException("Could not convert parameter '"
        + field.getName() + "' to type '" + clazz.getName() + "'");
  }
  
  private void set(Class<?> clazz, Field field, Object o, Object value) 
  throws  SecurityException,
      NoSuchMethodException,
      IllegalArgumentException,
      IllegalAccessException,
      InvocationTargetException
  {
    String setterName = "set" + Character.toUpperCase(field.getName().charAt(0));
    if(field.getName().length() > 1)
      setterName += field.getName().substring(1);
    
    Method method = clazz.getMethod(setterName, field.getType());
    method.invoke(o, new Object[]{value});
  }
}

Java Source Code List