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Posted to java-dev@axis.apache.org by Ruwan Linton <ru...@gmail.com> on 2008/03/28 05:11:47 UTC
Re: Interesting problem introduced by CDATA section
Hi Axis2 folks,
We (synapse) have a requirement on getting the CDATA events to be reported
and serialized when the message is serialized to the transport. I think
woodstox supports the property "
http://java.sun.com/xml/stream/properties/report-cdata-event" to turn on
reporting coalescing. Is there any configuration point in axis2 where we can
activate this?
Thanks,
Ruwan
On Fri, Mar 28, 2008 at 6:55 AM, Upul Godage <up...@gmail.com> wrote:
> I tried "http://java.sun.com/xml/stream/properties/report-cdata-event"
> first, but it didn't have any effect in this instance, but I remember it
> worked earlier when creating a direct XMLInputFactory instance for use
> sometime back.
>
> Upul
>
>
> On Fri, Mar 28, 2008 at 3:13 AM, Andreas Veithen <
> andreas.veithen@skynet.be>
> wrote:
>
> > Hi all,
> >
> > I'm pretty sure that coalescing is turned of by default. I think what
> > is really needed is to activate the following property:
> >
> > "http://java.sun.com/xml/stream/properties/report-cdata-event"
> >
> > As the URI implies, this property was introduced by Sun's
> > implementation, but it seems to be supported by Woodstox as well.
> >
> > Finally, I don't think that changes to AXIOM are required. Looking at
> > the StAXUtils code, it appears that you can get a reference to the
> > XMLInputFactory by calling StAXUtils.getXMLInputFactory().
> >
> > It should be quite easy to test if this approach works. If it does we
> > need to check if Axis has support for setting properties on the
> > XMLInputFactory in its configuration file. Otherwise I suggest to add
> > support to Synapse for that.
> >
> > Andreas
> >
> > On 27 Mar 2008, at 20:17, Upul Godage wrote:
> > > In AXIOM StAXUtils class when creating XMLInputFactory objects in
> > > getXMLInputFactory() methods, (which are used by different
> > > createXMLStreamReader() methods,) it can be instructed to preserve
> > > CDATA as
> > > CDATA by the following statement.
> > > xmlInputFactory.setProperty(XMLInputFactory.IS_COALESCING,
> > > Boolean.FALSE);
> > > But AXIOM code has to be changed for that.
> > >
> > > Upul
> > >
> > > On Thu, Mar 27, 2008 at 9:00 PM, Jeff Davis <jd...@idalica.com>
> > > wrote:
> > >
> > >> I suppose one horrible hack I could employ would be to use a Ruby
> > >> script
> > >> or
> > >> Java class to post it as a regular HTTP post and then simply not
> > >> specify a
> > >> send element so that it doesn't get posted from Synapse?
> > >>
> > >> jeff
> > >>
> > >> On Thu, Mar 27, 2008 at 9:25 AM, Jeff Davis <jd...@idalica.com>
> > >> wrote:
> > >>
> > >>> I played around with a jRuby script that adds the CDATA segment
> > >>> back,
> > >> but
> > >>> unfortunately, when the XML is sent out, it again resorts to the
> > >>> other
> > >>> behavior (this is probably an obvious thing to you guys,but I'm
> > >>> not as
> > >>> familiar with the inner workings of Synapse). It sounds like I
> > >>> might be
> > >> out
> > >>> of luck here, and as someone pointed earlier, it's not an issue with
> > >>> Synapse, per se, but an erroneously design web service.
> > >>>
> > >>> I take it there is no way to send back a "raw" request, whereby no
> > >>> XML
> > >>> processing is done (basically posts a string, as-is).
> > >>>
> > >>> jeff
> > >>>
> > >>>
> > >>> On Thu, Mar 27, 2008 at 8:51 AM, Paul Fremantle <pz...@gmail.com>
> > >> wrote:
> > >>>
> > >>>> Is there a way we can create a mediator that reconverts back to a
> > >>>> CDATA? I've played around a bit with Axiom, but it seems a little
> > >>>> tricky to force CDATA.
> > >>>>
> > >>>> Paul
> > >>>>
> > >>>> ---------- Forwarded message ----------
> > >>>> From: Paul Fremantle <pz...@gmail.com>
> > >>>> Date: Thu, Mar 27, 2008 at 2:19 PM
> > >>>> Subject: Re: Interesting problem introduced by CDATA section
> > >>>> To: user@synapse.apache.org
> > >>>>
> > >>>>
> > >>>> Jeff
> > >>>>
> > >>>> The annoying answer is that the service is wrong - its an XML error
> > >> to
> > >>>> differentiate between those two XMLs.
> > >>>> However, we'll see if there is a way to sort this out.
> > >>>>
> > >>>> Paul
> > >>>>
> > >>>>
> > >>>>
> > >>>> On Thu, Mar 27, 2008 at 4:28 AM, Jeff Davis <jd...@idalica.com>
> > >> wrote:
> > >>>>> Well, the problem is that the web service receiving the request
> > >>>> validates
> > >>>>> it, and they have it setup on their side so that if the CDATA
> > >> isnt'
> > >>>> present,
> > >>>>> the service call fails because of validation errors. I have to
> > >> have
> > >>>> that
> > >>>>> present or it won't work (it's a partner's service).
> > >>>>>
> > >>>>> jeff
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>> On Wed, Mar 26, 2008 at 10:05 PM, Upul Godage <upulg.dev@gmail.com
> > >>>
> > >>>> wrote:
> > >>>>>
> > >>>>>> Content wise there is no difference between CDATA sections and
> > >> the
> > >>>>>> resultant
> > >>>>>> escaped text data. < cannot be in parsed character data so it
> > >> is
> > >>>>>> converted
> > >>>>>> to < so it is not mixed up with element starting elements. I
> > >>>> think when
> > >>>>>> reading from the parser, default parser does not make a
> > >> difference
> > >>>> between
> > >>>>>> the CDATA sections and the normal text sections and the Synapse
> > >>>> sees them
> > >>>>>> as
> > >>>>>> just normal text. So the significance of CDATA markers are
> > >> dropped
> > >>>> when it
> > >>>>>> is parsed. Only the serialized form changes but the "content
> > >>>> remains
> > >>>>>> exactly
> > >>>>>> the same."
> > >>>>>>
> > >>>>>> Do you face a problem when not having it in the extact CDATA
> > >> form?
> > >>>>>>
> > >>>>>> Upul
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>>>> On Thu, Mar 27, 2008 at 8:07 AM, Jeff Davis <jd...@idalica.com>
> > >>>> wrote:
> > >>>>>>
> > >>>>>>> I'm attempting to access a SOAP web service that,
> > >> unfortunately,
> > >>>> uses a
> > >>>>>>> CDATA section within the body of the XML (this wasn't my
> > >>>> choosing, :-).
> > >>>>>>> The
> > >>>>>>> abbreviated XML looks like:
> > >>>>>>>
> > >>>>>>> <env:Envelope xmlns:env="http://www.xxx.com/hrit/envelope"
> > >>>>>>> xmlns:hrxml="http://ns.hr-xml.org/2004-08-02"
> > >>>>>>> xmlns:datetime="http://exslt.org/dates-and-times">
> > >>>>>>> <env:Sender>
> > >>>>>>> <env:id>test</env:id>
> > >>>>>>> </env:Sender>
> > >>>>>>>
> > >>>>>>> <env:Packet>
> > >>>>>>> <env:PacketInfo packetType="data">
> > >>>>>>> <env:packetId>1</env:packetId>
> > >>>>>>> </env:PacketInfo>
> > >>>>>>> <env:payload><![CDATA[
> > >>>>>>> <Candidate xmlns="http://ns.hr-xml.org/2004-08-02" >
> > >>>>>>> <test>
> > >>>>>>> <info>this is a test</info>
> > >>>>>>> </test>]]></env:payload>
> > >>>>>>> </env:Packet>
> > >>>>>>> </env:Envelope>
> > >>>>>>>
> > >>>>>>> The issue I encounter is that, when this is sent out by
> > >> Synapse,
> > >>>> it
> > >>>>>>> appears
> > >>>>>>> as (not showing the soap wrapper):
> > >>>>>>>
> > >>>>>>> <env:Envelope xmlns:hrxml="http://ns.hr-xml.org/2004-08-02"
> > >>>>>>> xmlns:datetime="
> > >>>>>>> http://exslt.org/dates-and-times">
> > >>>>>>> <env:Sender>
> > >>>>>>> <env:id>test</env:id>
> > >>>>>>> </env:Sender>
> > >>>>>>>
> > >>>>>>> <env:Packet>
> > >>>>>>> <env:PacketInfo packetType="data">
> > >>>>>>> <env:packetId>1</env:packetId>
> > >>>>>>> </env:PacketInfo>
> > >>>>>>> <env:payload>
> > >>>>>>> <Candidate xmlns="
> > >> http://ns.hr-xml.org/2004-08-02"
> > >>>>>>> xmlns:oa="
> > >>>>>>> http://www.openapplications.org/oagis" xmlns:ds="
> > >>>>>>> http://www.w3.org/2000/09/xmldsig#">
> > >>>>>>> <test>
> > >>>>>>> <info>this is a test</info>
> > >>>>>>> </test></env:payload>
> > >>>>>>> </env:Packet>
> > >>>>>>> </env:Envelope>
> > >>>>>>>
> > >>>>>>> Notice the CDATA section has disappeared, and the unwanted
> > >> <
> > >>>> appear
> > >>>>>> in
> > >>>>>>> lieu of the < within that. Researching the issue a bit, I
> > >>>> discovered
> > >>>>>> this
> > >>>>>>> is
> > >>>>>>> the expected behavior from Saxon (which I believe is the XSTL
> > >>>> being used
> > >>>>>>> by
> > >>>>>>> Synapse). I can reproduce this if I just use a blank
> > >> stylesheet.
> > >>>> Now, if
> > >>>>>> I
> > >>>>>>> apply this stylesheet and run it through Saxon manually, it
> > >>>> works great:
> > >>>>>>>
> > >>>>>>> <xsl:stylesheet xmlns:xsl="
> > >> http://www.w3.org/1999/XSL/Transform"
> > >>>>>> version="
> > >>>>>>> 2.0" xmlns:env="http://www.xxx.com/hrit/envelope">
> > >>>>>>> <xsl:output use-character-maps="xml"
> > >>>>>>> cdata-section-elements="env:payload"/>
> > >>>>>>> <xsl:character-map name="xml">
> > >>>>>>> <xsl:output-character character="<" string="<" />
> > >>>>>>> <xsl:output-character character=">" string=">" />
> > >>>>>>> <xsl:output-character character="
" string="
"
> > >> />
> > >>>>>>> <xsl:output-character character="/" string="/"
> > >> />
> > >>>>>>> <xsl:output-character character=""
> > >>>>>> string="<![CDATA["/>
> > >>>>>>> <xsl:output-character character=""
> > >> string="]]>"/>
> > >>>>>>> </xsl:character-map>
> > >>>>>>>
> > >>>>>>> <xsl:template match="/'">
> > >>>>>>> <xsl:copy-of select="*" />
> > >>>>>>> </xsl:template>
> > >>>>>>>
> > >>>>>>> </xsl:stylesheet>
> > >>>>>>>
> > >>>>>>> Unfortunately, when I plugin this stylesheet into the Synapse
> > >>>> <in>
> > >>>>>> route,
> > >>>>>>> it
> > >>>>>>> has no apparent affect (I twiddled with it to make sure it
> > >> was,
> > >>>> in fact,
> > >>>>>>> being used, and it was).
> > >>>>>>>
> > >>>>>>> This is leaving me with a real quandary -- any suggestions?
> > >>>>>>>
> > >>>>>>> jeff
> > >>>>>>>
> > >>>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>> --
> > >>>>> Jeff Davis
> > >>>>> Senior Architect
> > >>>>> Idalica Corporation
> > >>>>> MSN: jeffdavis_ca@hotmail.com
> > >>>>> Skype: jeffdavis_ca
> > >>>>> Phone: 719-287-8656
> > >>>>> Enabling Business Through Open Source Technologies
> > >>>>> www.idalica.com
> > >>>>>
> > >>>>> IMPORTANT: This electronic message is for exclusive use by the
> > >>>> person(s) to
> > >>>>> whom it is addressed, and may contain information that is
> > >>>> confidential or
> > >>>>> privileged and exempt from disclosure under applicable law. If you
> > >>>> are not
> > >>>>> an intended recipient, please be aware that any disclosure,
> > >>>> dissemination,
> > >>>>> distribution or copying of this communication, or the use of its
> > >>>> contents,
> > >>>>> is prohibited. If you have received this message in error, please
> > >>>>> immediately notify the sender of your inadvertent receipt and
> > >> delete
> > >>>> this
> > >>>>> message from all data storage systems.
> > >>>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>> --
> > >>>> Paul Fremantle
> > >>>> Co-Founder and VP of Technical Sales, WSO2
> > >>>> Apache Synapse PMC Chair
> > >>>> OASIS WS-RX TC Co-chair
> > >>>>
> > >>>> blog: http://pzf.fremantle.org
> > >>>> paul@wso2.com
> > >>>>
> > >>>> "Oxygenating the Web Service Platform", www.wso2.com
> > >>>>
> > >>>>
> > >>>>
> > >>>> --
> > >>>> Paul Fremantle
> > >>>> Co-Founder and VP of Technical Sales, WSO2
> > >>>> Apache Synapse PMC Chair
> > >>>> OASIS WS-RX TC Co-chair
> > >>>>
> > >>>> blog: http://pzf.fremantle.org
> > >>>> paul@wso2.com
> > >>>>
> > >>>> "Oxygenating the Web Service Platform", www.wso2.com
> > >>>>
> > >>>
> > >>>
> > >>>
> > >>> --
> > >>> Jeff Davis
> > >>> Senior Architect
> > >>> Idalica Corporation
> > >>> MSN: jeffdavis_ca@hotmail.com
> > >>> Skype: jeffdavis_ca
> > >>> Phone: 719-287-8656
> > >>> Enabling Business Through Open Source Technologies
> > >>> www.idalica.com
> > >>>
> > >>> IMPORTANT: This electronic message is for exclusive use by the
> > >>> person(s)
> > >>> to whom it is addressed, and may contain information that is
> > >> confidential or
> > >>> privileged and exempt from disclosure under applicable law. If you
> > >>> are
> > >> not
> > >>> an intended recipient, please be aware that any disclosure,
> > >> dissemination,
> > >>> distribution or copying of this communication, or the use of its
> > >> contents,
> > >>> is prohibited. If you have received this message in error, please
> > >>> immediately notify the sender of your inadvertent receipt and delete
> > >> this
> > >>> message from all data storage systems.
> > >>>
> > >>
> > >>
> > >>
> > >> --
> > >> Jeff Davis
> > >> Senior Architect
> > >> Idalica Corporation
> > >> MSN: jeffdavis_ca@hotmail.com
> > >> Skype: jeffdavis_ca
> > >> Phone: 719-287-8656
> > >> Enabling Business Through Open Source Technologies
> > >> www.idalica.com
> > >>
> > >> IMPORTANT: This electronic message is for exclusive use by the
> > >> person(s)
> > >> to
> > >> whom it is addressed, and may contain information that is
> > >> confidential or
> > >> privileged and exempt from disclosure under applicable law. If you
> > >> are not
> > >> an intended recipient, please be aware that any disclosure,
> > >> dissemination,
> > >> distribution or copying of this communication, or the use of its
> > >> contents,
> > >> is prohibited. If you have received this message in error, please
> > >> immediately notify the sender of your inadvertent receipt and
> > >> delete this
> > >> message from all data storage systems.
> > >>
> >
> >
>
--
Ruwan Linton
http://www.wso2.org - "Oxygenating the Web Services Platform"