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Posted to dev@xalan.apache.org by bu...@apache.org on 2002/05/30 22:50:56 UTC

DO NOT REPLY [Bug 9530] New: - TransformerIdentityImpl reportedly "inlines" DTDs

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9530

TransformerIdentityImpl reportedly "inlines" DTDs

           Summary: TransformerIdentityImpl reportedly "inlines" DTDs
           Product: XalanJ2
           Version: CurrentCVS
          Platform: Other
        OS/Version: Other
            Status: UNCONFIRMED
          Severity: Normal
          Priority: Other
         Component: org.apache.xalan.transformer
        AssignedTo: xalan-dev@xml.apache.org
        ReportedBy: keshlam@us.ibm.com


Haven't tested this, but it's claimed that the default identity tranformation 
may copy the external subset into the result document's internal subset.

Current workaround: Construct a "real" identity transformation, eg from a 
string. If you need to preserve the source document's <!DOCTYPE>, pre-read the 
source to obtain that info and use that to build an appropriate <xsl:output> 
into the string before building the transformation. Note that this will discard 
any internal subset that may be present in the source.

Longer term: TransformerIdentityImpl needs to be reconsidered from the ground 
up. It has never quite made up its mind whether it's an XSLT identity 
transformation or just a serializer. If the former, we might want to provide a 
way to programmatically set the equivalent of its <xsl:output> parameters to 
allow creating a <!DOCTYPE> (though it would be the user's responsibility to set 
this). If the latter, we ought to copy the <!DOCTYPE> and _only_ the internal 
subset through to the output stream(s)... assuming we can distinguish internal 
from external, which may not always be possible. 

See also Bug 1121, Bug 1831, Bug 5779 for other TransformerIdentityImpl 
concerns.