FHIRPath Function: ofType

Returns a collection that contains all items in the input collection that are of the given type or a subclass thereof. If the input collection is empty ({ }), the result is empty. The type argument is an identifier that must resolve to the name of a type in a model. For implementations with compile-time typing, this requires special-case handling when processing the argument to treat it as type specifier rather than an identifier expression:

Bundle.entry.resource.ofType(Patient)

In the above example, the symbol Patient must be treated as a type identifier rather than a reference to a Patient in context.

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Summary

• Category: Filtering and projection
• Section: 5.2.7
• Return Type: collection
• Empty Input Result: empty
• Errors on Multiple Input: false

Description

Returns a collection that contains all items in the input collection that are of the given type or a subclass thereof.

Arguments

• type: type specifier - Type to filter elements by

Type Mapping

• Any-Any

Example

Bundle.entry.resource.ofType(Patient)