[digester] Key/Value setting (oops, forgot subject heading)

[Steve Blom <st...@yahoo.com>]

Hi,
I'm trying to put contents into a map object like so:
<people>
  <person id="Jon">
    ...
  </person>
  <person id="Sue">
    ...
  </person>
<people>
I have a person object, that i want to store in a map
with the key being the person id. Is this possible? I
think I'm close, but missing on something.
digester.setObjectCreate("people", java.util.HashMap);
digester.setObjectCreate("people/person",
bean.Person.class);
digester.setCallMethod("people/person", "put", 2);
digester.setCallParam("people/person", 0, "id");
digester.setCallParam("people/person", 1); ?

The id is set right, but the object value isn't. What
am i missing?
Thanks - Steve



		
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Re: [digester] Key/Value setting (oops, forgot subject heading)

[Reid Pinchback <re...@yahoo.com>]

You were close.   You lost track of the fact that
there is a parameter stack and a digester stack, and
you need to make sure that "put" is called on the
correct object.



import org.apache.commons.digester.*;
import java.io.*;
import java.util.*;

public class PersonExample2 {

  public static class Person {
    String id;
    List personList = new ArrayList();
    public void addPerson(Person p){
      personList.add(p);
    }
    public void setId(String id) { this.id=id; }
    public String getId() { return id; }
    public String toString() { return
"Person["+id+"]"; }
  }

  public static class Root {
    Map people = null;
    public void setPeople(Map p){
      people=p;
    }
  }

  Digester makeConfiguredDigester() {
    Digester digester=new Digester();
    digester.addObjectCreate("people", HashMap.class);
    digester.addSetNext("people", "setPeople");
    digester.addObjectCreate("*/person",
Person.class);
    digester.addSetProperties("*/person");
    digester.addRule("*/person", new CallMethodRule(1,
"put", 2));
    digester.addCallParam("*/person", 0, "id");
    digester.addCallParam("*/person", 1, true);
    return digester;
  }

  public static void main(String[] args) throws
Exception {
    String input="<people><person id='jon'/><person
id='sue'/></people>";
    PersonExample2 ex=new PersonExample2();
    Digester digester=ex.makeConfiguredDigester();
    Root root=new Root();
    digester.push(root);
    digester.parse(new StringReader(input));
    System.out.println("people="+root.people);
  }

}



--- Steve Blom <st...@yahoo.com> wrote:

> 
> Hi,
> I'm trying to put contents into a map object like
> so:
> <people>
>   <person id="Jon">
>     ...
>   </person>
>   <person id="Sue">
>     ...
>   </person>
> <people>
> I have a person object, that i want to store in a
> map
> with the key being the person id. Is this possible?



		
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