PROPOSAL: a User implementation Option for getting and setting property's with PropertyUtils

[Johan Compagner]

Hi,

I myself really need this implementation so i am hoping that it can be inserted in 
Struts 1.0.
If not then i must alway's use a slightly altered struts version :-(

What i want:

I want to control my own implementation of getting and setting property's for a 
specifiek bean of mine
when using struts. The bean i want to control the setting and getting of properties is 
a Form bean of mine
so i need to alter struts it self  because struts uses PropertyUtils for this. I can't 
have a get and set for
every property.

What i altered:

I inserted a Interface in the struts.util package:

public interface Property 
{
    public Object getProperty(String);
    public void setProperty(String,object);
}

So if a bean wants to control it's own property's it must implement that interface.

PropertyUtils.getSimpleProperty(Object bean, String name){
 if(bean instanceof Property) {
  return ((Property)bean).getProperty(name);
 }
 else {
    // CURRENT IMPLEMENTATION.
  }
}

and

PropertyUtils.setSimpleProperty(Object bean, String name, Object value){
 if(bean instanceof Property) {
  ((Property)bean).setProperty(name, value);
 }
 else {
    // CURRENT IMPLEMENTATION.
 }
}

I only implemented the SimpleProperty at this time, maybe the same should be done with 
indexed.
But if a bean implements the Property Interface the PropertyUtils class is relaying 
this to
the bean it self.

Also the BeanUtils.populate(Object bean, Map properties) had to change a bit because 
that method is trying to get the PropertyDescriptor for a given name and it none is 
found
it won't call the PropertyUtils.setProperty(bean, name, parameters[0]);

the method:

 // Loop through the property name/value pairs to be set
 Iterator names = properties.keySet().iterator();

 if(bean instanceof Property) {
  while (names.hasNext())  {
   String name = (String) names.next();
   if (name == null) continue;
   Object value = properties.get(name); // String or String[]
   Object parameters[] = new Object[1];
   if (value instanceof String[])   {
    parameters[0] = ((String[])value)[0];
   }
   else {
    parameters[0] = value;
   }
   try{
    PropertyUtils.setProperty(bean, name, parameters[0]);
   }
   catch (NoSuchMethodException e) {
    if (debug >= 1) {
     System.out.println("    CANNOT HAPPEN: " + e);
     e.printStackTrace(System.out);
    }
   }
  }
 }
 else{
  while (names.hasNext()) {
        // CURRENT IMPLEMENTATION
 }
}

I attached all the files.

Johan Compagner

PropertyUtils.java

Property.java

BeanUtils.java