Hi Luca,
Have you seen the WingsTransformer in 2.1 scratchpad ? It converts
xcml (over at Krysalis) chart markup to svg which you can then give
to svg2png/etc.
I'm using it at the moment and it works quite well for pie, line
and bar charts. Perhaps that might be of use, as it works nicely
with Cocoon ?
Cheers,
Marcus
On Fri, Nov 08, 2002 at 11:33:03AM +0100, Luca Morandini wrote:
> Ludovic,
>
> we're writing a Transformer to produce SVG (and JPEG/PNG optionally) charts.
> The idea is having the chart description and associated data in XML as
> input, transform them, ending up with a nice SVG to be serialized.
>
> We're using a charting library which doesn't produce a SAX stream, but
> outputs the SVG element as a string, hence, the need to insert this XML
> elements in the output SAX stream.
>
> I hope this clears the matter :)
>
> Luca Morandini
> Istituto Poligrafico e Zecca dello Stato
> [EMAIL PROTECTED]
> [EMAIL PROTECTED]
>
>
> > -----Messaggio originale-----
> > Da: Ludovic de Beaurepaire [mailto:ludovic.debeaurepaire@;axonie.com]
> > Inviato: venerd́ 8 novembre 2002 11.26
> > A: [EMAIL PROTECTED]
> > Oggetto: Re: Strings to SAX events
> >
> >
> > Luca
> >
> > Sorry if it is NOK, but i didn't understand why you want to add
> > XML datas in
> > the transformer instead of in your pipeline's generator ?
> >
> > Ludovic
> > ----- Original Message -----
> > From: "Luca Morandini" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Friday, November 08, 2002 11:11 AM
> > Subject: R: Strings to SAX events
> >
> >
> > > Ludovic,
> > >
> > > thanks for your kind answer, but we are not in an XSP page
> > (we're writing
> > a
> > > Transformer instead), hence, your suggestion is not truly useful to us.
> > >
> > > Best regards,
> > >
> > > Luca Morandini
> > > [EMAIL PROTECTED]
> > >
> > > > -----Messaggio originale-----
> > > > Da: Ludovic de Beaurepaire [mailto:ludovic.debeaurepaire@;axonie.com]
> > > > Inviato: venerd́ 8 novembre 2002 11.02
> > > > A: [EMAIL PROTECTED]
> > > > Oggetto: Re: Strings to SAX events
> > > >
> > > >
> > > > Try in a XSP the following, data is your xml string :
> > > >
> > > > <util:include-expr>
> > > > <util:expr><xsp:expr>
> > > > data
> > > > </xsp:expr></util:expr>
> > > > </util:include-expr>
> > > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Luca Morandini" <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Friday, November 08, 2002 10:55 AM
> > > > Subject: Strings to SAX events
> > > >
> > > >
> > > > > Folks,
> > > > >
> > > > > We're in the process of writing a Transformer, which, of
> > > > course, outputs
> > > > > SAX
> > > > > events... but, in the midst of this stream , we need to insert an
> > > > > XML element stored in a string.
> > > > >
> > > > > To do this we're groping in the dark trying something like this:
> > > > >
> > > > > JaxpParser respParser = new JaxpParser();
> > > > > respParser.parse( new InputSource(new StringReader(str)),
> > > > > new EmbeddedXMLPipe(contentHandler));
> > > > >
> > > > > Which fails giving this:
> > > > > org.apache.cocoon.ProcessingException: Failed to execute pipeline.:
> > > > > java.lang.ClassCastException
> > > > > ...
> > > > > Caused by: java.lang.ClassCastException
> > > > > at
> > > > >
> > > > >
> > > > com.lucamorandini.charts.ChartTransformer.endElement(ChartTransfor
> > > > mer.java:6
> > > > > 55)
> > > > > at
> > > > >
> > > > >
> > > > org.apache.cocoon.components.sax.XMLByteStreamInterpreter.parse(XM
> > > > LByteStrea
> > > > > mInterpreter.java:129)
> > > > > at
> > > > >
> > > > >
> > > > org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserial
> > > > ize(XMLByt
> > > > > eStreamInterpreter.java:102)
> > > > > at
> > > > > org.apache.cocoon.components.pipeline.CachingEventPipeline.process
> > > > > (CachingEventPipeline.java:219)
> > > > > ... 44 more
> > > > >
> > > > > java.lang.ClassCastException
> > > > > at
> > > > >
> > > > >
> > > > com.lucamorandini.charts.ChartTransformer.endElement(ChartTransfor
> > > > mer.java:6
> > > > > 55)
> > > > > at
> > > > >
> > > > >
> > > > org.apache.cocoon.components.sax.XMLByteStreamInterpreter.parse(XM
> > > > LByteStrea
> > > > > mInterpreter.java:129)
> > > > > at
> > > > >
> > > > >
> > > > org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserial
> > > > ize(XMLByt
> > > > > eStreamInterpreter.java:102)
> > > > > at
> > > > > org.apache.cocoon.components.pipeline.CachingEventPipeline.process
> > > > > (CachingEventPipeline.java:219)
> > > > > at
> > > > >
> > > > >
> > > > org.apache.cocoon.components.pipeline.CachingStreamPipeline.proces
> > > > s(CachingS
> > > > > treamPipeline.java:399)
> > > > >
> > > > > The classes we use are:
> > > > > org.apache.avalon.excalibur.xml.JaxpParser;
> > > > > org.xml.sax.InputSource;
> > > > > java.io.StringReader;
> > > > > org.apache.cocoon.xml.EmbeddedXMLPipe;
> > > > >
> > > > > And the environment is:
> > > > > Solaris 5.8
> > > > > JDK 1.4.1_01
> > > > > Tomcat 4.1.12-LE-jdk14
> > > > > Cocoon 2.0.3
> > > > >
> > > > > May someone please help us ?
> > > > >
> > > > > Thanks in advance,
> > > > >
> > > > > Piero De Nicola & Luca Morandini
> > > > >
> > > > >
> > > > > We are protected from the virus by Norton Antivirus
> > > > Corporate Edition
> > > > >
> > > > >
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.....
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