[ http://issues.apache.org/jira/browse/XERCESJ-1181?page=all ]
Michael Glavassevich updated XERCESJ-1181:
------------------------------------------
Fix Version/s: 2.8.1
> internal subset lost after using cloneNode (patch provided!)
> ------------------------------------------------------------
>
> Key: XERCESJ-1181
> URL: http://issues.apache.org/jira/browse/XERCESJ-1181
> Project: Xerces2-J
> Issue Type: Bug
> Components: DOM (Level 3 Core)
> Affects Versions: 2.8.0
> Reporter: Jacob Kjome
> Assigned To: Michael Glavassevich
> Fix For: 2.8.1
>
> Attachments: CoreDocumentImpl.patch
>
>
> I parse my XML document using the Xerces DOMParser. The internal subset
> exists
> perfectly intact in the resulting DOM until I call Document.cloneNode(true).
> When I
> perform a print of the nodes, here's what the document type looks
> like, first before the clone (expected) and then after (actual)....
> Expected....
> DocumentTypeImpl: name=document
> internalSubset=
> <!ENTITY erh "Elliotte Rusty Harold">
> <!ELEMENT document (title, signature)>
> <!ELEMENT title (#PCDATA)>
> <!ELEMENT copyright (#PCDATA)>
> <!ELEMENT email (#PCDATA)>
> <!ELEMENT hr EMPTY>
> <!ELEMENT lastmodified (#PCDATA)>
> <!ELEMENT signature (hr, copyright, email, lastmodified)>
> Actual....
> DocumentTypeImpl: name=document
> EntityImpl: name=erh
> TextImpl: Elliotte Rusty Harold
> As you can see, Document.cloneNode(true) seems to turn the internal
> subset <!ENTITY> into an actual Entity Node and the rest of the
> internal subset (the <!ELEMENT>'s) is discarded. This makes the document
> invalid
> since there is no DTD information where there was in the original document.
> I applied a small patch to CoreDocumentImpl (attached) and now it works as
> expected, other than the fact that in addition to the internal subset
> existing, the Entity node exists as a child of the DocumentType, which is
> odd. I'm not sure if that's valid or not, though it didn't exist in the DOM
> before Document.cloneNode(true), so it seems to me it shouldn't be there.
> However, if it doesn't hurt anything, I guess it doesn't matter much to me.
> Anyway, after my patch, here's the new result...
> DocumentTypeImpl: name=document
> internalSubset=
> <!ENTITY erh 'Elliotte Rusty Harold'>
> <!ELEMENT document (title,signature)>
> <!ELEMENT title (#PCDATA)>
> <!ELEMENT copyright (#PCDATA)>
> <!ELEMENT email (#PCDATA)>
> <!ELEMENT hr EMPTY>
> <!ELEMENT lastmodified (#PCDATA)>
> <!ELEMENT signature (hr,copyright,email,lastmodified)>
> EntityImpl: name=erh
> TextImpl: Elliotte Rusty Harold
> I hope this can get applied in time for the next release of Xerces!
> Jake
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