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Definitions

Identifier
Condition expression
Meaning
RF_NounReferenceNoun(Feature / Object) propertyPath references-to Feature

A child or descendant element of an AIXM feature/object has an xlink:href attribute that has a value representing a reference to another feature. This corresponds to one of the feature referencing possibilities defined in the AIXM Feature Identification and Reference specification:

  • abstract reference (by UUID, see chapter 3.4). This is the most common situation.
  • concrete local reference (by gml:id, see chapter 3.2). This is also relatively common, but it works only when the referenced feature is in the same AIXM file.
  • concrete external reference (by URL, see chapter 3.3). This is only a theoretical possibility, not used by any known system.

Mapping to AIXM XML structure

In this elementary condition, Feature/Object and propertyPath are interpreted similarly to the Elementary conditions - test descendant nodes value. In addition, propertyPath always ends with an @link:href attribute.

The following diagram shows how references-to is interpreted in the AIXM XML structure.


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