Angle Bracket <> Syntax
Describes how to use angle bracket <> syntax (with a XPath expression) to access virtual properties.
Where Applicable You can use this syntax in business rules.
Details To use angle bracket syntax to access a virtual property, use the following syntax:
message<xpathexpression>
Where
For example, a condition that uses an xpath expression to evaluate whether a string is in an XML document might be:
Contains(Document.Stream.</|name(/*)>, "00UK")
The preceding syntax is equivalent to the following:
GetXPathValues(message.stream," context | expression ")
GetXPathValues() is a convenience method in the rules engine. It operates on a message that contains a stream property whose contents are an XML document. The method applies an XPath expression to the XML document within the stream property, and returns all matching values. If the context | part of the XPath argument is missing, InterSystems IRIS searches the entire XML document.
If the syntax returns multiple values a , b , and c they appear in a single string enclosed in <> angle brackets, like this:
< a >< b >< c >
Purpose of this instance: Draft documentation
DocReleaseID: HealthConnect2025.1
Content loaded from:
/staging/learning/iris-doc/2025.1.x/doc/cache/en-us/src/
/staging/learning/iris-doc/2025.1.x/doc/ensemble/en-us/src/
/staging/learning/iris-doc/2025.1.x/doc/healthconnect/en-us/src/
/staging/learning/iris-doc/2025.1.x/doc/healthcommon/en-us/src/
/staging/learning/iris-doc/2025.1.x/doc/security/en-us/src/
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