I serialized the List to byte[] and sent it as attachment (DataHandler). But
I had to use soap specific class on my server side. As I mentioned in my
previous email our soap services are transparent from our soap tool so far.
But with this attachment stuff, I had to use some soap specifc classes.
Following is the code I used to build DataHandler.
byte [] returnBytes = null;
ByteArrayOutputStream out = new ByteArrayOutputStream();
ObjectOutputStream s;
try {
s = new ObjectOutputStream(out);
s.writeObject(objects);
s.flush();
returnBytes = out.toByteArray();
objects = null;
log.debug("SIZE OF THE RETURNING BYTES:"+returnBytes.length);
DataSource ds = new ByteArrayDataSource(returnBytes,
"application/octet-stream");
dh = new DataHandler(ds);
} catch (Throwable ex) {
log.error("Unable to serialize the object list.", ex);
throw new SearchException(ISearchResourceKeys.UNABLE_TO_COMPLETE_QUERY,
ex);
}
Is there anyway I can the above code so I don't have to use
org.apache.soap.util.mime.ByteArrayDataSource to build the DataHandler?
Praveen
---- Original Message -----
From: "Scott Nichol" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, December 19, 2003 3:51 PM
Subject: Re: Sending response as stream
Looking at SOAPMappingRegistry, the following classes are all serialized as
attachments.
javax.mail.internet.MimeBodyPart.class,
java.io.InputStream.class,
javax.activation.DataSource.class,
javax.activation.DataHandler.class,
If your method returns your List as, say, an InputStream, I believe you will
find its contents are included as an attachment.
One thing to watch out for with attachments. Last time I looked, .NET only
supported DIME attachments. The SOAP Attachments specs (which MSFT
co-authored) calls for MIME attachments, which is what Apache SOAP uses.
Scott Nichol
Do not send e-mail directly to this e-mail address,
because it is filtered to accept only mail from
specific mail lists.
----- Original Message -----
From: "Praveen Peddi" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, December 19, 2003 11:31 AM
Subject: Re: Sending response as stream
> Hello all,
> Is there a way a method in a soap service can return an object
> (java.util.List) as attachment with out using soap specific classes.
> I was looking at the mime example in soap samples and it was using
> ByteArrayDatasource which is soap specific class.
> The example I saw looked like this:
> DataSource ds = new ByteArrayDataSource(new File(fname[i]), null);
>
> I think my question probably is "Is there any way to build a DataHandler
> object w/o using apache soap tool on the server side?"
>
> I am trying send the java.util.List as an attachment. the list has strings
> in it. The reason I want to send it as attachment is because the list has
> 1000s of strings and sending it as List will fillup the soap envelop and
> putting overhead of parsing the huge xml which in turn is filling up all
my
> memory with the parsed document. If I send the same list as an attchment,
I
> am assuming that I will not have this problem. The size of the list itself
> is not a problem I think. Its the size of the soap envelop thats killing
the
> app.
>
> Am I right?
>
> The reason I do not want to use soap specific classes is because our soap
> services are plain java classes and designed such a way that we can swith
to
> any soap tool in the future.
>
> Thanks.
>
> Praveen
>
> ----- Original Message -----
> From: "Martin Gainty" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Wednesday, December 17, 2003 1:15 AM
> Subject: Re: Sending response as stream
>
>
> > Read this
> > http://www.w3.org/2000/xp/Group/2/07/SOAP-AF/aftf-soap-af.html
> > Regards,
> > Martin
> > ----- Original Message -----
> > From: "Praveen Peddi" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Tuesday, December 16, 2003 11:32 AM
> > Subject: Re: Sending response as stream
> >
> >
> > > Does it mean that attachments are sent as streams and not part of soap
> > > envelop?
> > >
> > > I think my problem here is the memory and time. So If I send it as
> > > attachment, the client can read the stream and may be save it to disk
> > rather
> > > than filling the memory?
> > >
> > > Praveen
> > >
> > > ----- Original Message -----
> > > From: "Scott Nichol" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Tuesday, December 16, 2003 10:54 AM
> > > Subject: Re: Sending response as stream
> > >
> > >
> > > Attachments are the one way I can think of to minimize the processing
> > Apache
> > > SOAP will do.
> > >
> > > Scott Nichol
> > >
> > > Do not send e-mail directly to this e-mail address,
> > > because it is filtered to accept only mail from
> > > specific mail lists.
> > > ----- Original Message -----
> > > From: "Praveen Peddi" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Tuesday, December 16, 2003 10:30 AM
> > > Subject: Sending response as stream
> > >
> > >
> > > HI all,
> > > We are using apache soap both on serverside and on client side.
> > > I am trying to write a method in soap service that returns thousands
of
> > > objects that are converted into xml elements. Returning the whole
> response
> > > as an xml string is taking for ever. I am wondering if I can send the
> > > response as an output stream rather than as xml string.
> > >
> > > How about sending the response as attachment. Will it do any better. I
> > think
> > > attachments are sent as streams if I am not wrong.
> > >
> > > Thanks
> > > Praveen
> > >
> > >
> >
>
>
