[CAMEL-18604] XpathRouteBuilder in Route Templates

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.18.2
• Fix Version/s: 3.20.0
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Raymond
• Created: 11/Oct/22 12:06
• Updated: 09/Nov/22 08:20
• Resolved: 09/Nov/22 08:20

Description

I like to use a split step with the XPathBuilder in a routetemplate.

It's possible to create a template with a split like this:

         routeTemplate("split-xpath-router")
                 .templateOptionalParameter("expression")
                 .templateParameter("in")
                 .templateParameter("out")
                 .from("in")
                     .split().xpath("expression")
                         .to("out")
                    .end()

However, it doesn't seem possible to use XPathBuilder in the template, because the template parameter doesn't get interpolated. This leads to:

javax.xml.xpath.XPathExpressionException: net.sf.saxon.trans.XPathException: Unexpected token "{" at start of expression

I tried with:

         routeTemplate("split-xpath-router")
                 .templateOptionalParameter("expression")
                 .templateParameter("in")
                 .templateParameter("out")
                 .from("in")
                     .split().xpath("expression")
                         .to("out")
                    .end()

I tried it like this:

.split(new XPathBuilder("").saxon().threadSafety(true))

And

.split().method(new XPathBuilder(""))

I expected it something like this:

         routeTemplate("split-xpath-router")
                 .templateOptionalParameter("expression")
                 .templateParameter("in")
                 .templateParameter("out")
                 .from("in")
                     .split().xpathBuilder("expression").saxon().threadSafety("true")
                         .to("out")
                    .end()

Issue Links

• is fixed by: CAMEL-18697 camel-core - Propose a DSL for languages
• relates to: CAMEL-18615 Using CSVDataformat in a Route Template