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Using Virtual Documents in Productions
Angle Bracket <> Syntax
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Describes how to use angle bracket <> syntax 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
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>