Xpath query exclude ancestors of a particular namespace

The following xpath query gets nodes except where the ancestor is a particular type:

(/def:Image|…|//def:TextBo开发者_开发百科x)[not(ancestor::clpm:EditableText)]

However, I want to be able to exclude all nodes that have an ancestor that is in the clpm namespace.

Can't work it out guys, any ideas?

Thanks

Use the following as predicate:

not(ancestor::*[starts-with(name(),'clpm:')])

Do note, however, that namespace and prefix are quite different things. In a single XML document many different prefixes may be bound to the same namespace and a single prefix may be bound (redefined) to more than one namespace.

In your question you say namespace, when you mean prefix.

The XPath expression above is true if the current node doesn't have any ancestors with prefix clpm.