xpath - XSLT 1.0: how to go for the "parent" axis -

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xpath - XSLT 1.0: how to go for the "parent" axis -

i have question concerning performance of xslt calling "parent" axis in xpath. can phone call parent axis using "::*" or phone call using "::" , name of element

parent::*/mvke/item/vmsta='z2'

or

parent::item/mvke/item/vmsta='z2'

does matter performance wise if utilize "*" or if utilize name of node element? both work wondering difference is. can please explain me?

thank much help , best regards, peter

the first look matches any element parent. sec look matches when parent item element. that's difference. can't imagine important performance impact, since both node tests can performed in constant time.

note line xpath 1.0 spec:

every node other root node has 1 parent, either element node or root node.

in practice means parent::* matches any parent except of root element.

to demonstrate, consider simple illustration document:

<root> <one/> <item> <two/> </item> </root>

then:

//parent::* root , item elements (every parent node element)

//parent::item homecoming item element (the parent element item)

//parent::node() parent of root (i.e. root node) root , item elements

xslt xpath parent

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