XPath: alternatives in node-test?

[kj]

Suppose I wanted to select all the element nodes whose tags were
either foo or bar. One way would be to join the results of //Foo
and //bar. Is there a way to achieve the same with a single
expression that included the two alternatives? Something like
(pushing the analogy with Unix shell conventions) //{foo,bar} ?

Thanks,

kj

 

[kj]

Use:

//*[self::foo or self::bar]

Boy, you're fast!!!

Right after I posted it occurred to me to search for one more thing
in the recommendations page, namely the string "'|'" (minus the
enclosing double-quotes). I found about "UnionExpr"; so this also
works:

//foo|//bar

Thanks,

kj

 

[Dimitre Novatchev [MVP XML]]

Use:

//*[self::foo or self::bar]


Cheers,

Dimitre Novatchev [XML MVP],
FXSL developer, XML Insider,

http://fxsl.sourceforge.net/ -- the home of FXSL
Resume: http://fxsl.sf.net/DNovatchev/Resume/Res.html

 

[Dimitre Novatchev [MVP XML]]

In <[email protected]> "Dimitre Novatchev [MVP

Use:

//*[self::foo or self::bar]

Boy, you're fast!!!

Right after I posted it occurred to me to search for one more thing
in the recommendations page, namely the string "'|'" (minus the
enclosing double-quotes). I found about "UnionExpr"; so this also
works:

//foo|//bar

Yes, but I understood your question as if you wanted the "//" abbreviation
to be used only once.

Also, do note that some not smart XPath engines will evaluate:
//*[self::foo or self::bar]

twice as fast as;

//foo | //bar


Cheers,

Dimitre Novatchev [XML MVP],
FXSL developer, XML Insider,

http://fxsl.sourceforge.net/ -- the home of FXSL
Resume: http://fxsl.sf.net/DNovatchev/Resume/Res.html