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Hello,
I have an XSL/XPath problem to which I cannot find the solution. I have an xml file with data about films, in the following form (simplified): B B <film> B B B B B <title>The big Lebowski</title> B B B B B <director> B B B B B B B B <first>Joel</first> B B B B B B B B <last>Coen</last> B B B B B </director> B B B B B <director> B B B B B B B B <first>Ethan</first> B B B B B B B B <last>Coen</last> B B B B B </director> B B B B B <author> B B B B B B B B <first>Ethan</first> B B B B B B B B <last>Coen</last> B B B B B </author> B B B B B <author> B B B B B B B B <first>Joel</first> B B B B B B B B <last>Coen</last> B B B B B </author> B B </film> I would like to test whether the director(s) of the film are the same as its writer(s) (here called "authors"). That is, I want to test whether for each <director> element there is an <author> element with the same child elements, and vice versa (i.e., for each <author> element a corresponding <director> element). So, in the above case, the test should return <true>. Note that the order of the <director>/<author> elements should not matter. By contrast, in the following example the test should return <false>: B B <film> B B B B B <title>M</title> B B B B B <director> B B B B B B B B <first>Fritz</first> B B B B B B B B <last>Lang</last> B B B B B </director> B B B B B <author> B B B B B B B B <first>Thea von</first> B B B B B B B B <last>Harbou</last> B B B B B </author> B B B B B <author> B B B B B B B B <first>Fritz</first> B B B B B B B B <last>Lang</last> B B B B B </author> B B </film> How can this be done? To explain the purpose of this: When the test comes out true, the output will be "Written and directed by [names]", whereas otherwise it will be "Written by [names]. Directed by [names]". Thanks in advance for your help! Wolfhart
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