CODEWITHSUNDEEP
xpathcontains
Gunacelan M
Gunacelan M

Reputation: 317

How does contain function work in xpath

<collection>
<movie title="Transformers" shelf="B">
   <type>Science Fiction</type>
   <format>DVD</format>
   <year>1980</year>
   <rating>R</rating>
   <popularity>7</popularity>
   <description>Science Fiction</description>
</movie>
   <movie title="Trigun" shelf="B">
   <type>Action</type>
   <format>DVD</format>
   <episodes>4</episodes>
   <rating>PG</rating>
   <popularity>10</popularity>
   <description>Quite a bit of action!</description>
</movie>
<movie title="Ishtar" shelf="A">
   <type>Comedy</type>
   <format>VHS</format>
   <rating>PG</rating>
   <popularity>2</popularity>
   <description>Boring</description>
</movie>
</collection>

In the above code segment,I want to get the title attribute for the segment where the description element contains a sub-string function.I tried to use contains functions which returns Boolean and expects a string for the argument. I tried something few Xpaths but dint work and got to know the answer is collection/movie[contains(description,'bit')]/@title

Since contains returns only Boolean value, how does it work in the above case.Please clarify

Upvotes: 0

Views: 92

Answers (1)

biziclop
biziclop

Reputation: 49744

It's got nothing to do with contains() specifically, [...] simply defines a predicate, with which to filter things. So tag[boolean-expression()] will return to you exactly those tags for which boolean-expression() returns true() (or to be more precise: a value that can be converted to true()).

Upvotes: 2

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