The current logic seems to work well for most people and it's the logic
that has been in place for quite some time now.
A new feature was recently added that lets you unmarshal into an
existing object.
For your case you can simply clear the array before calling castor as
such:
MyOrder order = new MyOrder();
order.setStringArr(new String[0]);
Unmarshaller unmarshaller = new Unmarshaller(order);
Hopefully that satisfies your needs.
Thanks,
--Keith
Uddhav wrote:
>
> Yes, this seems to be the case. But I have a query at requirements level.
> When we deserialise an object the exact state of the object
> is retained. That is to say size of an array after deserialisation is same
> as
> what it was while serialising it.
> In our case however the size of the array doubles.
> I am not very sure how this could be overcome, or how convieneint
> it would be to modify the code, but shouldnt the worflow be something
> like this while unmarshalling.
> (a) add all the elements of the array to temporary arraylist as they are
> encountered in the xml file.
> (b) convert this to an array when all elements have been processed
> (c) set the array only once using setter.
>
> The workflow currently seems to be this,
> (a) get current state of the array.
> (b) convert it to an arraylist.
> (c) add the new element to the arraylist
> (d) convert the arraylist to an array
> (e) set the new array
>
> If you see the need for a change in the worflow, I would like to help you
> with
> it if possible.
>
> Thanks,
> Uddhav
> ----- Original Message -----
> From: "Keith Visco" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, February 25, 2002 11:05 AM
> Subject: Re: [castor-dev] Problem with predefiined arrays while
> unmarshalling
>
> >
> > The unmarshalling seems correct to me...
> >
> > Castor won't overwrite the strings that already in the array.
> >
> > --Keith
> >
> > Uddhav wrote:
> > >
> > > This is the java source,
> > > public class MyOrder {
> > > public String[] stringArr = new
> > > String[]{"strElement1","strElement2","strElement3","strElement4"};
> > > public String[] getStringArr()
> > > {
> > > return this.stringArr;
> > > }
> > >
> > > public void setStringArr(String[] stringArr)
> > > {
> > > this.stringArr = stringArr;
> > > }
> > > }
> > >
> > > This is the mapping file,
> > > <?xml version="1.0"?>
> > > <!DOCTYPE mapping SYSTEM "mapping.dtd">
> > >
> > > <mapping>
> > > <class name="MyOrder">
> > > <map-to xml="Order"/>
> > > <field name="StringArr"
> > > type="java.lang.String"
> > > collection="array">
> > > <bind-xml name="StringArr"/>
> > > </field>
> > > </class>
> > > </mapping>
> > >
> > > After unmarshalling I print the contents of stringArr and get the
> following
> > > output,
> > > strElement1
> > > strElement2
> > > strElement3
> > > strElement4
> > > strElement1
> > > strElement2
> > > strElement3
> > > strElement4
> > > i.e. twice the size of the intialised array.
> > >
> > > I tried to add a method using set-method as
> > > set-method="addStringArr"
> > > The corresponding java class has following signature
> > > public void addStringArr (String stringArr)
> > >
> > > I found that the function is never reached so I tried changing
> > > it to String[] from String. The behaviour is still the same.
> > >
> > > Thanks,
> > > Uddhav
> > >
> > > ----- Original Message -----
> > > From: "Keith Visco" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Monday, February 25, 2002 10:06 AM
> > > Subject: Re: [castor-dev] Problem with predefiined arrays while
> > > unmarshalling
> > >
> > > >
> > > > Can you attach a small example which demonstrates the problem?
> > > >
> > > > A possible work around is to use an "add method" so you can control
> > > > the collections...
> > > >
> > > > <field name="someClass" set-method="addSomeClass" ...>
> > > >
> > > > Note that you need to use the set-method attribute to specify the
> > > > add-method.
> > > >
> > > > Thanks,
> > > >
> > > > --Keith
> > > >
> > > > > Uddhav wrote:
> > > > >
> > > > > Hi,
> > > > > I have a class which intitalises the size of the array
> > > > > when the class is instantiated.
> > > > > SomeClass[] refClass_ = new SomeClass[4];
> > > > > // corresponding getter-setter
> > > > >
> > > > > Marshalling works fine however when I unmarshal I have
> > > > > eight elements in the array instead of the expected four.
> > > > >
> > > > > Has anyone faced a similar situation? If so, what is the
> > > > > possible workaround for this.
> > > > >
> > > > > Thanks,
> > > > > Uddhav
> > > > >
> > > >
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