FW: Reader gets overwritten, bug?

[Uma Shinde <us...@openmarket.com>]

The problem here is that the parser is called twice, once from
getAssociatedStylesheet and once from transform. And just calling the parser
twice on the same input source does not work. Here's a code snippet I used
to verify that.

	File file = new File(xmlFile);
	FileReader fstr = new FileReader(file);
	InputSource inp = new InputSource(fstr);
	DOMParser p = new DOMParser();
	p.parse(inp);
	System.out.println("first Parse");
	p.parse(inp);

The second parse throws this exception:
org.xml.sax.SAXParseException: The root element is required in a well-formed
document.


>>-----Original Message-----
>>From: Shane Curcuru [mailto:shane_curcuru@yahoo.com]
>>Sent: Thursday, May 24, 2001 10:09 PM
>>To: xalan-dev@xml.apache.org
>>Subject: Re: Reader gets overwritten, bug?
>>
>>
>>If I recall correctly, that's not a bug (but as I'm
>>thinking about it, I'm not sure...)
>>
>>Basically it's common to only be able to use
>>InputStreams/Readers once, and then have to recreate
>>them.  Thus you probably need to create a new
>>StreamSource(new Reader(file.blah)) for the
>>getAssociatedStylesheet() call, and then create a
>>second StreamSource(new Reader(file.blah)) for the
>>stylesheet build.  (Or at least a new Reader, to set
>>back into the same StreamSource).
>>
>>I suppose perhaps it shouldn't set the Source you
>>passed in to null, but I'm betting that we're not
>>going to allow you to re-use the underlying
>>Reader/InputSource again.
>>
>>- Shane
>>---- you Meena Kamath <me...@openmarket.com>
>>wrote ----
>>
>>I ran into this problem while using
>>getAssociatedStylesheet() to work with
>>an embedded stylesheet.  To explain this problem
>>better,  I've attached the
>>UseStylesheetPI example that I modified. 
>>If you notice the transform() and
>>getAssociatedStylesheet() use the same
>>StreamSource.  The StreamSource has been constructed
>>using a Reader.  On
>>execution I get this exception 
>>
>>"javax.xml.transform.TransformerException: The root
>>element is required in a
>>well
>>-formed document.
>>        at
>>org.apache.xalan.transformer.TransformerImpl.transform(TransformerImp
>>l.java, Compiled Code)
>>        at
>>org.apache.xalan.transformer.TransformerImpl.transform(TransformerImp
>>l.java:1174)
>>        at
>>UseStylesheetPI.main(UseStylesheetPI.java:87)....."
>>
>>On debugging I found that the
>>getAssociatedStylesheet() actually sets the
>>reader to null.  I tried it with FileReader as well as
>>StringReader and get
>>the same results.  Is this a bug?
>>
>>Thanks
>>Meena
>>
>>
>>=====
>><eof msg="This is not my regular email account"
>> humor="This is not Shane's actual brain today" />
>>
>>__________________________________________________
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