Skip to main content

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

  • message is a variable that refers to the current message. The name of this variable depends upon the context.

  • xpathexpression is an XPath expression.

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/
Excluded items: AADAN, ABIT, ACLOUD, AFL_adonet, AFL_ecp, AFL_icm, AFL_jdbc, AFL_netxep, AFL_sharding, AFL_xep, APMML, APOWER, ARGATEWAY, AWEBSOCKETS, AWSGI, BJAVA, BJAVNAT, BJAVPER, BJAVXEP, BJSNAT, BNET, BNETNAT, BNETODBC, BNETXEP, BPYNAT, BSPK, BTPI, BXCI, GAUTOML, GCONV, GCSP, GICM, GIKNOW, GIML, GISQ, GISR, GSCF, GSQLSRCH, GTSQ, GUIMA, PAGE_activex, PAGE_administration, PAGE_apimgr, PAGE_appdev_ides, PAGE_bi, PAGE_cachedirect, PAGE_data_migration, PAGE_data_science, PAGE_deployment, PAGE_deployment_configuration, PAGE_deployment_containers, PAGE_deployment_icm, PAGE_deployment_iko, PAGE_deployment_install, PAGE_dotnet, PAGE_dotnet_native, PAGE_dsvr, PAGE_embedded_language_development, PAGE_epython, PAGE_external_language_development, PAGE_interop, PAGE_interop_lifecycle, PAGE_interop_vdoc, PAGE_interoperability, PAGE_java, PAGE_java_jdbc, PAGE_java_native, PAGE_machine_learning, PAGE_monitoring, PAGE_multimodel, PAGE_multimodel_multidimensional, PAGE_multimodel_object, PAGE_multivalue, PAGE_native, PAGE_nodejs_native, PAGE_objectscript, PAGE_objectscript_ides, PAGE_odbc, PAGE_platform_arch_design, PAGE_pygate, PAGE_python, PAGE_python_native, PAGE_reports, PAGE_scalability, PAGE_security_authentication, PAGE_security_authorization, PAGE_studio, PAGE_zen, PAGE_zenmojo, PAGE_zenreports
FeedbackOpens in a new tab