PublicFieldPropertyDescriptor.java :  » JSON » jsonwebservice » com » jaxws » json » codec » Java Open Source

package com.jaxws.json.codec;

import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;

import javax.xml.bind.annotation.XmlTransient;

/**
 * @author Sundaramurthi Saminathan
 *
 */
public class PublicFieldPropertyDescriptor extends PropertyDescriptor {

  private Field field;

  public PublicFieldPropertyDescriptor(Field field,
      Class<?> beanClass)
      throws IntrospectionException {
    super(field.getName(), beanClass);
    this.field = field;
  }
  
  public void setValue(Object obj, Object value) throws IllegalArgumentException, IllegalAccessException{
    field.set(obj, value);
  }
  
  public Object getValue(Object obj) throws IllegalArgumentException, IllegalAccessException{
    return field.get(obj);
  }
  
  public static PublicFieldPropertyDescriptor[] getDiscriptors(Field fields[],Class<?> beanClass){
    ArrayList<PublicFieldPropertyDescriptor> list = new ArrayList<PublicFieldPropertyDescriptor>();
    for(Field field : fields){
      if(field.isAnnotationPresent(XmlTransient.class))
        continue;
      try {
        list.add(new PublicFieldPropertyDescriptor(field,beanClass));
      } catch (IntrospectionException e) {}
    }
    return list.toArray(new PublicFieldPropertyDescriptor[list.size()]);
  }

  @Override
  public synchronized Class<?> getPropertyType() {
    return field.getType();
  }
  
  private static Method read, write;
  static{
    try{
      read = PublicFieldPropertyDescriptor.class.getDeclaredMethod("getValue", Object.class);
      write = PublicFieldPropertyDescriptor.class.getDeclaredMethod("setValue", Object.class,Object.class);
    }catch(Throwable th){}
  }
   
  
  @Override
  public synchronized Method getReadMethod() {
    return read;
  }

  @Override
  public synchronized Method getWriteMethod() {
    return write;
  }
}