[jdom-interest] NO DOC TYPE? There sure is!!!

[Per Norrman]

Hi,

some comments:

1) Document#toString() does not generate the XML representation of the tree,
you have to use XMLOutputter#outputString().

2) If the only use of the JDOM Document is the input to a translation, then I
think your're better of translating directly from from the string using a
StreamSource. In this case you can also have the transformer generate XML
directly and control the DOCTYPE using an <xsl:output> element in
the stylesheet.

This is what happens in the JDOM case:

input -> JDOM tree -> SAX events -> xsl input tree -> transform -> output tree 
-> SAX events -> JDOM tree --> XML string

compare this to:

input -> SAX events -> xsl input tree -> transform -> output tree -> XML string

Note that you cannot have the XSL translator creating a doctype node in the
resulting JDOM tree. Output processing is only applicable when the XSL processor
controls the XML/HTML/whatever output.

Hope this helps!

/pmn


gary.marshall at worldspan.com wrote:
> In a JSP file I am writing using IBM's Websphere Studio Site Developer IDE,
> I am using JDOM with a Document object created from an XML string and a XSL
> file to create formatted output to render to the client browser.
> 
> Heres' the code:
> 
>             SAXBuilder oBuilder = new SAXBuilder();
>             ...... strXMLReturn string primed here......
> //  Create a StringReader class to read the string containingthe XML
> returned:
>             StringReader strReader = new StringReader(strXMLReturn);
>             Document oDoc = oBuilder.build(strReader);
> 
> //          Set the DocType using a DTD file the exists on the local
> machine directory:
>             DocType theDocType = new DocType("newsreleases",
> 
> "C:/PortalDevelWork/WSPNewsPortlet/WebContent/wsp_News_portlets/scripts/newsrelease.dtd"
> );
>             oDoc.setDocType(theDocType);
> 
> //    Set up the XSLT stylesheet for use with Xalan-J (the Java version of
> the Apache Xalan processor)
>           Transformer transformer = TransformerFactory.newInstance()
>             .newTransformer(new StreamSource(
> 
> "C:/PortalDevelWork/WSPNewsPortlet/WebContent/wsp_News_portlets/style/templates/TestTempl008.xsl"
> ));
> 
> //    Do the transform!!!:
>             JDOMResult output = new JDOMResult();
>             transformer.transform(new JDOMSource(oDoc),output);
>             Document outDoc = output.getDocument();
> 
> //    Dump the result to the browser:
>             %><%=outDoc%><%
> 
> 
> Here is a snippet of the DTD file:
> 
>       <!ELEMENT newsreleases (news+)>
>             <!ATTLIST newsreleases
>             usercountryid           CDATA #IMPLIED
>             userlanguageid          CDATA #REQUIRED
> 
>       <!ELEMENT news (name, global, startdate, enddate, assoccountry*,
> language*, version*)>
>       <!ATTLIST news
>       id CDATA #REQUIRED
> 
> 
> Here is the beginning of the "strXMLReturn" string:
> 
>   <newsreleases usercountryid="382" userlanguageid="1">
>      <news id="927">
>        <name>New Helpdesk Number for Switzerland</name>
>        <global>F</global>
>        <startdate>03/12/2004</startdate>
>        <enddate>12/31/2004</enddate>
>        <language id="1635" langid="1" langcode="english">
>           <publishedversion>5410</publishedversion>
>        </language>
>        <version id="5410" VersionNewsLangid="1635">
>           <Versionlanguage>1</Versionlanguage>
>           <publishdate>03/12/2004</publishdate>
>           <displayname>New Helpdesk Number for Switzerland in G/F/I/E</
> displayname>
>           <abstract> </abstract>
>        </version>
>      </news>
> 
> So, I have set the DOCTYPE of the document I sent into the transformer.
> The result that gets sent back to the browser is:
> 
>                   [Document: No DOCTYPE declaration, Root is [Element: ]]
> 
> Thats it.
> 
> Now I have also tried to put all the DOCTYPE information (all of the code
> in the DTD file) inside of and at the top of an XML file, before all of the
> XML nodes and fed that XML file into the transformer and got the same
> results.
> 
> Any ideas as to what I am missing?
> Thanks to all for your time and assistance
> Gary
> 
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