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EObject to StreamSource [message #908908]

Thu, 06 September 2012 04:05

Eclipse User

Hi guys,

I am just looking for EObject to StreamSource conversion.

I used the following code:

//P is the EObject
Project p = ...;

ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(p);
oos.flush();
oos.close();

InputStream is = new ByteArrayInputStream(baos.toByteArray());
StreamSource source = new StreamSource(is);

I get an error: java.io.NotSerializableException

any help is appriciated.

Thanks a mil
K

Re: EObject to StreamSource [message #908932 is a reply to message #908908]

Thu, 06 September 2012 04:48

Eclipse User

Kosala,

You can't assume EObject will generally be java.io.Serializeable. You
could implement that for your model's implementation classes...
Easier would be to use the facilities in BinaryResourceImpl, e.g.,
EObjectInputStream and EObjectOutputStream.

On 06/09/2012 10:05 AM, Kosala Yapa wrote:
> Hi guys,
>
> I am just looking for EObject to StreamSource conversion.
>
> I used the following code:
>
> //P is the EObject
> Project p = ...;
>
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> ObjectOutputStream oos = new ObjectOutputStream(baos);
> oos.writeObject(p);
> oos.flush();
> oos.close();
>
> InputStream is = new ByteArrayInputStream(baos.toByteArray());
> StreamSource source = new StreamSource(is);
>
> I get an error: java.io.NotSerializableException
>
> any help is appriciated.
>
> Thanks a mil
> K

Re: EObject to StreamSource [message #909564 is a reply to message #908932]

Fri, 07 September 2012 06:38

Eclipse User

Thanks a mil Ed.

I am just wondering how to extract an EObject to EObjectOutputStream?

//p is an EObject
Project p = getProject(...);

PipedOutputStream pout = new PipedOutputStream();
PipedInputStream pin = new PipedInputStream(pout);
EObjectOutputStream eoOutStream = new EObjectOutputStream(pout,null);

//need to add p to eoOutStream
//ObjectOutputStream has writeObject method. How to do that for EObjectOutputStream ?

StreamSource source = new StreamSource(pin);

Thanks.
K

[Updated on: Fri, 07 September 2012 06:39] by Moderator

Re: EObject to StreamSource [message #909571 is a reply to message #909564]

Fri, 07 September 2012 06:52

Eclipse User

Kosala,

I think you'll get the idea when you look at what doSave and doLoad and
what the methods they call do. I.e., you'll notice there are
saveEObject and loadEObject methods.

On 07/09/2012 12:38 PM, Kosala Yapa wrote:
> Thanks Ed.
>
> I am just wondering how to extract an EObject to EObjectOutputStream?
>
> //p is an EObject
> Project p = getProject(...);
>
>
> PipedOutputStream pout = new PipedOutputStream(); PipedInputStream pin
> = new PipedInputStream(pout); EObjectOutputStream eoOutStream = new
> EObjectOutputStream(pout,null);
>
> //ObjectOutputStream has writeObject method. How to do that for
> EObjectOutputStream ?
>
> StreamSource source = new StreamSource(pin);
>
> Thanks.
> K

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