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Posted to java-user@axis.apache.org by Fran <fc...@gmail.com> on 2007/05/21 12:25:15 UTC
[AXIS2] How to manage byte[] using ADB?
Hi!
I've got a web service that send/receive byte[] in some methods, I'm
using ADB and I have done a WSDL and Skeleton for my service, but I
don't know how get/set byte[] in the parameters of my methods, I see
that byte[] is transformed in DataHandler but I don't know how to
interact with DataHandler.
Can anyone help me?
Thanks!
PS: Sorry for my poor English.
--
Saludos
Fran
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Re: [AXIS2] How to manage byte[] using ADB?
Posted by Paul Fremantle <pz...@gmail.com>.
Fran
To get the data out of a DataHandler, you need to understand the
InputStream model in Java.
http://java.sun.com/j2se/1.4.2/docs/api/java/io/InputStream.html
Basically, if you can allocate a buffer big enough to get all the data
its easy. Suppose you know you are only going to get less than 1000
bytes:
byte buf[] = new byte[1000];
int bytesActuallyRead = dh.getDataSource().getInputStream().read(buf);
If you don't know how big the file is you have to loop through it.
Paul
On 5/21/07, Fran <fc...@gmail.com> wrote:
> 2007/5/21, Paul Fremantle <pz...@gmail.com>:
> > No problem!
> >
> > The DataHandler is an abstraction over a byte array or file. The
> > reason is that you might have a very large binary data object (maybe a
> > file) and you don't want to load the whole thing into memory. The
> > DataHandler object lets Axis2 stream such large objects straight from
> > file to the network without having to load the whole byte[] in memory
> > at once.
> >
> > But in your case I'm guessing its ok to have a byte[], so here is what
> > you need to do.
> >
> > To create a DataHandler from a byte[], just do:
> >
> > import org.apache.axiom.attachments.ByteArrayDataSource;
> >
> > DataHandler dh = new DataHandler(new ByteArrayDataSource(yourByteArray))
> >
>
> And to get the content of a DataHandler into a byte array?
>
> > Alternatively, if you know the data type of the binary data (e.g.
> > image), you can mark up the schema using
> >
> > <element name="MyBinaryData"
> > xmime:expectedContentTypes='image/jpeg' type="xmime:base64Binary"/>
> >
> > This will trigger the ADB databinding tool to recognize this as an
> > image and map it into a java.awt.Image.
> >
> > Its worth reading: http://ws.apache.org/axis2/1_2/mtom-guide.html
> >
> > Paul
> >
> > On 5/21/07, Fran <fc...@gmail.com> wrote:
> > > Hi!
> > >
> > > I've got a web service that send/receive byte[] in some methods, I'm
> > > using ADB and I have done a WSDL and Skeleton for my service, but I
> > > don't know how get/set byte[] in the parameters of my methods, I see
> > > that byte[] is transformed in DataHandler but I don't know how to
> > > interact with DataHandler.
> > >
> > > Can anyone help me?
> > >
> > > Thanks!
> > >
> > > PS: Sorry for my poor English.
> > >
> > > --
> > > Saludos
> > >
> > > Fran
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> > > For additional commands, e-mail: axis-user-help@ws.apache.org
> > >
> > >
> >
> >
> > --
> > Paul Fremantle
> > VP/Technology, WSO2 and OASIS WS-RX TC Co-chair
> >
> > http://bloglines.com/blog/paulfremantle
> > paul@wso2.com
> >
> > "Oxygenating the Web Service Platform", www.wso2.com
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> > For additional commands, e-mail: axis-user-help@ws.apache.org
> >
> >
>
>
> --
> Saludos
>
> Fran
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> For additional commands, e-mail: axis-user-help@ws.apache.org
>
>
--
Paul Fremantle
VP/Technology, WSO2 and OASIS WS-RX TC Co-chair
http://bloglines.com/blog/paulfremantle
paul@wso2.com
"Oxygenating the Web Service Platform", www.wso2.com
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Re: [AXIS2] How to manage byte[] using ADB?
Posted by Fran <fc...@gmail.com>.
2007/5/21, Paul Fremantle <pz...@gmail.com>:
> No problem!
>
> The DataHandler is an abstraction over a byte array or file. The
> reason is that you might have a very large binary data object (maybe a
> file) and you don't want to load the whole thing into memory. The
> DataHandler object lets Axis2 stream such large objects straight from
> file to the network without having to load the whole byte[] in memory
> at once.
>
> But in your case I'm guessing its ok to have a byte[], so here is what
> you need to do.
>
> To create a DataHandler from a byte[], just do:
>
> import org.apache.axiom.attachments.ByteArrayDataSource;
>
> DataHandler dh = new DataHandler(new ByteArrayDataSource(yourByteArray))
>
And to get the content of a DataHandler into a byte array?
> Alternatively, if you know the data type of the binary data (e.g.
> image), you can mark up the schema using
>
> <element name="MyBinaryData"
> xmime:expectedContentTypes='image/jpeg' type="xmime:base64Binary"/>
>
> This will trigger the ADB databinding tool to recognize this as an
> image and map it into a java.awt.Image.
>
> Its worth reading: http://ws.apache.org/axis2/1_2/mtom-guide.html
>
> Paul
>
> On 5/21/07, Fran <fc...@gmail.com> wrote:
> > Hi!
> >
> > I've got a web service that send/receive byte[] in some methods, I'm
> > using ADB and I have done a WSDL and Skeleton for my service, but I
> > don't know how get/set byte[] in the parameters of my methods, I see
> > that byte[] is transformed in DataHandler but I don't know how to
> > interact with DataHandler.
> >
> > Can anyone help me?
> >
> > Thanks!
> >
> > PS: Sorry for my poor English.
> >
> > --
> > Saludos
> >
> > Fran
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> > For additional commands, e-mail: axis-user-help@ws.apache.org
> >
> >
>
>
> --
> Paul Fremantle
> VP/Technology, WSO2 and OASIS WS-RX TC Co-chair
>
> http://bloglines.com/blog/paulfremantle
> paul@wso2.com
>
> "Oxygenating the Web Service Platform", www.wso2.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> For additional commands, e-mail: axis-user-help@ws.apache.org
>
>
--
Saludos
Fran
---------------------------------------------------------------------
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Re: [AXIS2] How to manage byte[] using ADB?
Posted by Paul Fremantle <pz...@gmail.com>.
No problem!
The DataHandler is an abstraction over a byte array or file. The
reason is that you might have a very large binary data object (maybe a
file) and you don't want to load the whole thing into memory. The
DataHandler object lets Axis2 stream such large objects straight from
file to the network without having to load the whole byte[] in memory
at once.
But in your case I'm guessing its ok to have a byte[], so here is what
you need to do.
To create a DataHandler from a byte[], just do:
import org.apache.axiom.attachments.ByteArrayDataSource;
DataHandler dh = new DataHandler(new ByteArrayDataSource(yourByteArray))
Alternatively, if you know the data type of the binary data (e.g.
image), you can mark up the schema using
<element name="MyBinaryData"
xmime:expectedContentTypes='image/jpeg' type="xmime:base64Binary"/>
This will trigger the ADB databinding tool to recognize this as an
image and map it into a java.awt.Image.
Its worth reading: http://ws.apache.org/axis2/1_2/mtom-guide.html
Paul
On 5/21/07, Fran <fc...@gmail.com> wrote:
> Hi!
>
> I've got a web service that send/receive byte[] in some methods, I'm
> using ADB and I have done a WSDL and Skeleton for my service, but I
> don't know how get/set byte[] in the parameters of my methods, I see
> that byte[] is transformed in DataHandler but I don't know how to
> interact with DataHandler.
>
> Can anyone help me?
>
> Thanks!
>
> PS: Sorry for my poor English.
>
> --
> Saludos
>
> Fran
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> For additional commands, e-mail: axis-user-help@ws.apache.org
>
>
--
Paul Fremantle
VP/Technology, WSO2 and OASIS WS-RX TC Co-chair
http://bloglines.com/blog/paulfremantle
paul@wso2.com
"Oxygenating the Web Service Platform", www.wso2.com
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