I guess the NodeComparator could ignore duplicate namespace declarations,
though technically the XML object models are different, so I think the
documents are different.
BTW if ever anyone is having problems comparing documents that they think
are equal but the NodeComparator decides that they are different, you might
find the following useful.
In dom4j/test/src/org/dom4j/AbstractTestCase.java is-a JUnit TestCase and is
an abstract base class for dom4j test cases. It contains a whole bunch of
useful assertion helper methods for testing documents, nodes and fragments
being equal. The nice thing is that you get useful messages telling you
exactly why they are different, so its pretty easy to track down.
e.g.
public MyTest extends AbstractTestCase {
...
public void testSomething() {
Document doc1 = ...;
Document doc2 = ...;
assertDocumentsEqual( doc1, doc2 );
}
}
James
----- Original Message -----
From: "Thomas Nichols" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, November 27, 2001 12:50 PM
Subject: Re: [dom4j-user] Changing document NS after parsing
> Very bad form, replying to my own post - but I've tracked it down.
>
> I was calling
> el.addNamespace ("deltaxml", "foo");
> for the "x" element in the first doc. The second doc's "x" element already
> has a NS decl, inherited from "top".
> A nodeIterator() on the first "x" (in a.xml, after addNamespace()) finds 1
> content item - a Namespace. For the second doc, b.xml, a nodeIterator on
> its "x" element gives 0 content items.
>
> So... although asML() gives identical results:
> <top xmlns:deltaxml="foo"><x/></top>
>
> the two docs are different because one has a Namespace "node" and the
other
> doesn't.
>
> Is this as expected? Workarounds, anyone?
> Thanks,
> Thomas.
>
>
>
> At 21:14 26/11/2001 +0000, Thomas Nichols wrote:
> >Good Day,
> >
> >I'm using the NodeComparator in a regression-test setup - comparing
> >expected with actual results. I get differences if doc B has a namespace
> >declaration that isn't present in A (or vice versa) - even if it's
unused.
> >This is important because a "deltaxml" namespace may (but need not be)
> >declared in these docs -- so for these files, a 'deltaxml="foo"' present
> >in one but not the other is an ignorable difference.
> >
> >For example:
> >$cat a.xml
> ><?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> ><top><x/></top>
> >
> >$cat b.xml
> ><?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> ><top xmlns:deltaxml="foo"><x/></top>
> >
> >Calling topElement.addNamespace ("deltaxml", "foo"); doesn't fix the
> >problem - the NodeComparator still says they're different.
> >
> >I guessed that this is because the "x" child element in b.xml gets a
> >namespace decl for "foo" when it's initially parsed, and that adding the
> >decl to the "top" element in a.xml does _not_ add it to the child "x"
> >element. However, even recursive addNamespace() calls on all children do
> >not give a tree that matches - even though asXML() gives an apparently
> >identical tree.
> >
> >Is there any way to change the declared namespaces for an Element and all
> >its children? What about Attributes? I don't understand from
> >NodeComparator.java why this approach isn't working.
> >
> >======
> >
> >Notes: Attribute has a getNamespace(), but no addNamespace() --
> >asymmetrical with Element. Attribute has a setNamespace(Namespace) which
> >is missing from Element.
> >I am probably confusing the _declared_ namespaces for a node -- as
> >returned by Attribute.getDeclaredNamespaces(), can't see this for Element
> >-- with the namespace of a particular node -- e.g.
<xhtml:head>...</xhtml:head>
> >
> >Adding 'xmlns:deltaxml="foo"' (unsurprisingly) makes NodeComparator
happy.
> >
> >[ Aside: What causes asXML to output "<x></x>" instead of "<x/>" ? ]
> >
> >
> >Any advice or direction warmly received,
> >
> >Thanks,
> >Thomas.
> >
> >PS: Isn't dom4j just wonderful?
> >
> >
> >_______________________________________________
> >dom4j-user mailing list
> >[EMAIL PROTECTED]
> >https://lists.sourceforge.net/lists/listinfo/dom4j-user
>
>
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