nested indexed property

Hi,

Im using struts 1.1.

class OtherObj {

private String name;

privae String value;

}

class MyObj {

private id;

private ArrayList<OtherObj> param = new ArrayList<OtherObj>();

public OtherObj getParam(int index) {

while (index >= this.param.size())

this.paramt.add(new OtherObj());

return (OtherObj)this.param.get(index);

}

}

class myForm extends ActionForm {

private ArrayList<myObj> myList = new ArrayList<myObj>();

public MyObj getMyList(int index) {

while (index >= this.myList.size())

this.myList.add(new MyObj());

return (MyObj)this.myList.get(index);

}

}

Now my problem is this:

<input name="myList[0].param[0].name">

The method getMyList is invoked and an object is added, but getParam not is invoked and OtherObj isn't added to ArrayList param. And so i get an exception range out bond.

I didn't understand because invoke only method get of first property myList[0] and for param[0] not!?

I hope, now is more clear, thanks.

davide.angela at 2007-7-12 18:01:38 >

>public OtherObj getParam(int index) {

>while (index >= this.param.size())

>this.paramt.add(new OtherObj());

>return (OtherObj)this.param.get(index);

>}

What's the object paramt ?

add a debug info to you method to see if it's called:

public OtherObj getParam(int index) {

System.out.println("getParam called with index "+index);

while (index >= this.param.size()){

this.paramt.add(new OtherObj());

System.out.println(" *** Added new Object ");

}

return (OtherObj)this.param.get(index);

}

java_2006a at 2007-7-12 18:01:38 >

>Struts see only the frist level of indexed property

That's true.

Try this:<nested:nest property="myList[0]">

<html:text name="param[0].name">

</nested:nest>

or this:<nested:nest property="myList[0]">

<nested:nest property="param[0]">

<html:text name="name">

</nested:nest>

</nested:nest>

See http://struts.apache.org/1.2.7/userGuide/struts-nested.html

Hope That Helps

java_2006a at 2007-7-12 18:01:38 >