SupportConsoleDevelopersStart a trialContact

11.11. XPath Domain-Specific Language

Note

You may find it convenient to undertake an XPath-based evaluation of XML-based messages. Red Hat supports this by shipping a domain-specific language implementation. Use this implementation to add XPath expressions to the rule file.
  1. First, define the expressions in the XPathLanguage.dsl file and use the following code to reference it in the rule set: 
    expander XPathLanguage.dsl
  2. The XPath Language makes sure the message is in JBOSS_XML and that the following items have been defined:
    1. xpathMatch<element> : this yields true if an element by this name is matched.
    2. xpathEquals<element> , <value> : this yields true if the element is found and its value equals the value.
    3. xpathGreaterThan<element> , <value> : this yields true if the element is found and its value is greater than the value.
    4. xpathLessThan<element> , <value> : this yields true if the element is found and its value is lower then the value.

    Note

    The fun_cbr quick-start demonstrates this use of XPath.

    Note

    It is possible to define a completely different domain-specific language.
Red Hat logoGithubRedditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

© 2024 Red Hat, Inc.