Metadata Manager Custom Metadata Integration Guide

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Expressions to Link Endpoints

When you define a linking rule, you enter expressions in condition attributes. Expressions filter the list of possible objects to link and define which filtered objects Metadata Manager links.

You can include an expression in a condition attribute for the following elements in a rule set definition file or a rule set file configured to link endpoints:

targetFilter elements use the condition attribute as a selection expression. A selection expression filters the list of possible objects to link in the target resource.

link elements use the condition attribute as a link expression. A link expression defines which filtered objects are linked. Metadata Manager links the objects that meet the condition defined in the link expression.

You can use the following operators in selection expressions and link expressions:

Logical operators AND and OR.

Comparison operators =, !=, IS NULL, and IS NOT NULL.

Parentheses to group multiple conditions.

In a rule set definition file, you can use parameters to represent string literals in selection expressions and link expressions. Enter each parameter in the format

${<parameter_name>}

. For example:

Rule Element Configuration for Endpoints

Selection Expressions for Endpoints

Link Expressions for Endpoints

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