Xpath, How to select elements with a specific attribute? - xpath

Question

I am learning xpath and I am trying to get some data from html using xpath.
How do I select elements "A Number" with C contain C1>1 and Price<20
I want to select the elements:
<A Number=1234 Date=05-25-2007>
<A Number=1235 Date=05-26-2007>
<A Number=1237 Date=05-25-2007>
<A>
<A Number="1234" Date="05-25-2007">
<B>
<B1>Judith Miller</B1>
<Tax N="Yes" Rate="21"/>
</B>
<C>
<C1 x="xxxxx" Price="20"/>
<C1 x="yyyyy" Price="15"/>
</C>
</A>
<A Number="1235" Date="05-26-2007">
<B>
<B1>Herbert Marshall</B1>
<Adress Street="Saint Marc 2250" City="Oslo"/>
<Tax N="Yes" Rate="21"/>
</B>
<C>
<C1 x="yyyy" Price="25"/>
<C1 x="zzzz" Price="12"/>
<C1 x="xxxx" Price="22"/>
</C>
</A>
<A Number="1236" Date="05-26-2007">
<B>
<Nazwa>Judith Miller</Nazwa>
<Adress Street="Kennedy 511" City="Florida"/>
<Tax N="Yes" Rate="21"/>
</B>
<C>
<C1 x="fffff" Price="15"/>
</C>
</A>
<A Number="1237" Date="05-25-2007">
<B>
<B1>Harrison Faber</B1>
<Adress Street="Street 326" City="London"/>
<Tax N="No" Rate="0"/>
</B>
<C>
<C1 x="xxx" Price="20"/>
<C1 x="yyy" Price="9"/>
</C>
</A>
</A>
What is the XPath expression for selecting this elements?
Cheers

Answer 1

After fixing your data to be well-formed and uniform, I was able to get the three A's with
//A[count(C/C1) > 1][C/C1/#Price < 20]
Fixed data:
<root>
<A Number="1234" Date="05-25-2007">
<B>
<B1>Judith Miller</B1>
<Tax due="Yes" Rate="21"/>
</B>
<C>
<C1 x="xxxxx" Price="20"/>
<C1 x="yyyyy" Price="15"/>
</C>
</A>
<A Number="1235" Date="05-26-2007">
<B>
<B1>Herbert Marshall</B1>
<Adress Street="Saint Marc 2250" City="Oslo"/>
<Tax due="Yes" Rate="21"/>
</B>
<C>
<C1 x="yyyy" Price="25"/>
<C1 x="zzzz" Price="12"/>
<C1 x="xxxx" Price="22"/>
</C>
</A>
<A Number="1236" Date="05-26-2007">
<B>
<B1>Judith Miller</B1>
<Adress Street="Kennedy 511" City="Florida"/>
<Tax due="Yes" Rate="21"/>
</B>
<C>
<C1 x="fffff" Price="15"/>
</C>
</A>
<A Number="1237" Date="05-25-2007">
<B>
<B1>Harrison Faber</B1>
<Adress Street="Street 326" City="London"/>
<Tax due="No" Rate="0"/>
</B>
<C>
<C1 x="xxx" Price="20"/>
<C1 x="yyy" Price="9"/>
</C>
</A>
</root>