Re: [dom4j-dev] About namespaces

[Paul Libbrecht]

Patrizio,






hope it helps.

paul

xmlns:myns="xxx" associates the namespace xxx to all descendent elements that have the prefix myns. xmlns="xxx" associates the namespace xxx to all descendent elements that don't have a prefix. Le 04-juil.-08 à 17:09, <[EMAIL PROTECTED]> <[EMAIL PROTECTED] > a écrit :

I'm trying to understand better the namespace topic.

If I've a document like below:

[DOC1]
<myns:books xmlns:myns="http://something";>
 <book>
  <year>2007</year>
 </book>
 <book>
  <year>2008</year>
 </book>
</myns:books>


So I deduce that book elements don't have a namespace or is 'empty'.



[DOC2]
<myns:books xmlns:myns="http://something";>
 <myns:book>
  <myns:year>2007</myns:year>
 </myns:book>
 <myns:book>
  <myns:year>2008</myns:year>
 </myns:book>
</myns:books>



[DOC3]
<books xmlns:myns="http://something";>
 <book>
  <year>2007</year>
 </book>
 <book>
  <year>2008</year>
 </book>
</books>


Could anyone help me to understand better this topic ?

if I want access book elements with xpath expression I should use / myns:books/book and not /myns:books/myns:book (I've used XMLSpy). If I want to have myns as namespace for all elements, my document should appear as below: I mean, should I tag each element with namespace as in [DOC2] or like in [DOC3] there is an equivalent 'short' form ? It seems that [DOC2] & [DOC3] are different because /myns:books/ myns:book xpath expression is correct for [DOC2] but not for [DOC3].

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