RE: Zeus: Data binding and Enhydra Enterprise services

["Brett McLaughlin" <brett@xxxxxxxxxxxxxxx>]

> -----Original Message-----
> From: owner-Zeus@xxxxxxxxxxx [mailto:owner-Zeus@xxxxxxxxxxx]On Behalf Of
> Christophe Ney
> Sent: Tuesday, January 16, 2001 4:14 PM
> To: Zeus@xxxxxxxxxxx
> Subject: Zeus: Data binding and Enhydra Enterprise services
>
>
> Brett,
>
> Do you plan to write a marshaler class that will marshal/unmarshal
> the Data Object using setter and getter methods?

I had not... one Marshaller class and one Unmarshaller class would be able
to do all marshalling and unmarshalling, I would think. I'm not sure why you
would need specific "flavors" like MyDtdMarshaller or MyFooMarshaller. But
maybe I'm missing something?

However, as for the DTD, I assume you meant:

<!ELEMENT foo (description)>
<!ELEMENT description (#PCDATA)>

In that case, you would get:

public interface Foo {
  public String getDescription();
  public void setDescription(String description);
}

public class FooImpl implements Foo {
  private String description;

  public String getDescription() {
    return description;
  }

  public void setDescription(String description) {
    this.description = description;
  }
}

Then, if you had an XML document:

<?xml version="1.0"?>

<foo>Hello World</foo>

called, say, /usr/local/foo.xml, you could do:

Marshaller marshaller = Marshaller.getInstance();
Object o = marshaller.marshal(new StreamSource("/usr/local/foo.xml"));

if (o != null) {
  Foo foo = (Foo)o;
  String theDescription = foo.getDescription();

  foo.setDescription("See you later");
  Unmarshaller unmarshaller = Unmarshaller.getInstance();
  unmarshaller.unmarshal(foo, new StreamResult("/usr/local/foo.xml"));
}

You would have then written back out:

<?xml version="1.0"?>
<foo>See you later</foo>

Make sense? Comments?

-Brett

>
> This would be very usefull for configuration of EE services.
> In EE the configuration object must extends TargetAccessPoint which
> implies that it cannot be generated by the Zeus framework.
> However, the Zeus framework could generate a Data Object interface
> and provide a marshaler for it.
>
> let say that myDTD contains
>
> <!ELEMENT foo (description)>
> <!ELEMENT a (#PCDATA)>
>
> Zeus would generate
>
> public interface Foo {
>   public void setA(String a);
>   public String getA();
> }
>
> public MyDTDMarshaler {
>   public void marshal(Reader r, Foo f){...}
>   public void unmarshal(Writer w, Foo f){...}
> }
>
>
> ------------------------------------------------------------------
> -----------
> To unsubscribe from this mailing list, send email to majordomo@xxxxxxxxxxx
> with the text "unsubscribe zeus" in the body of the email.
> If you have other questions regarding this mailing list, send email to
> the list admin at owner-zeus@xxxxxxxxxxxx
>

-----------------------------------------------------------------------------
To unsubscribe from this mailing list, send email to majordomo@xxxxxxxxxxx
with the text "unsubscribe zeus" in the body of the email.
If you have other questions regarding this mailing list, send email to
the list admin at owner-zeus@xxxxxxxxxxxx