CODEWITHSUNDEEP
clojureclojure-java-interopdstu2-fhir
Heefoo
Heefoo

Reputation: 125

Method cannot be found but clojure.reflector shows otherwise

I am trying to create a dstu2 client from clojure using hapi fhir. As a template i use https://github.com/jamesagnew/hapi-fhir/blob/master/examples/src/main/java/example/GenericClientExample.java

But I am not able to execute 

ctx.setPerformanceOptions(PerformanceOptionsEnum.DEFERRED_MODEL_SCANNING);
in clojure

What i do is the following: 

(def fhir-context (. FhirContext forDstu2))
=> #'emrspp.fhir-resources/fhir-context 
(def opts PerformanceOptionsEnum/DEFERRED_MODEL_SCANNING)
=>  #'emrspp.fhir-resources/opts

But then the followint fails: 

(.setPerformanceOptions fhir-context opts)
=>
CompilerException java.lang.IllegalArgumentException: No matching method found: setPerformanceOptions for class ca.uhn.fhir.context.FhirContext

clojure reflection gives the following : 

(pprint (filter #(= "setPerformanceOptions" (str (:name %))) (:members  (r/reflect fhir-context))))

=> 
~
({:name setPerformanceOptions,
  :return-type void,
  :declaring-class ca.uhn.fhir.context.FhirContext,
  :parameter-types [ca.uhn.fhir.context.PerformanceOptionsEnum<>],
  :exception-types [],
  :flags #{:varargs :public}}
 {:name setPerformanceOptions,
  :return-type void,
  :declaring-class ca.uhn.fhir.context.FhirContext,
  :parameter-types [java.util.Collection],
  :exception-types [],
  :flags #{:public}})
nil

The imports section is:

 (:import [org.hl7.fhir.instance.model.api IBaseOperationOutcome IBaseResource ]
  7            [ca.uhn.fhir.context FhirContext PerformanceOptionsEnum]
  8            [ca.uhn.fhir.model.base.resource BaseOperationOutcome ]
  9            [ca.uhn.fhir.model.dstu2.resource Bundle
 10                                              Conformance Observation
 11                                              OperationOutcome
 12                                              Organization Parameters
 13                                              Patient Provenance]
 14            [ca.uhn.fhir.model.dstu2.valueset AdministrativeGenderEnum IssueSeverityEnum]
 15             [ca.uhn.fhir.model.primitive DateDt IdDt  InstantDt]
 16            [ca.uhn.fhir.rest.api  MethodOutcome SummaryEnum ]
 17            [ca.uhn.fhir.rest.client IGenericClient ServerValidationModeEnum interceptor.LoggingInterceptor ]
 18            [ca.uhn.fhir.rest.method.SearchStyleEnum ]
 19            [ca.uhn.fhir.rest.param.DateRangeParam ]
 20            [ca.uhn.fhir.rest.server.exceptions.PreconditionFailedException ]
 21            )

with no :requires except pprint and reflection

Any hits of what happens regarding the method setPerformanceOptions that appears to be there but be executed ????

Upvotes: 0

Views: 76

Answers (1)

Heefoo
Heefoo

Reputation: 125

I figured it out after hours. I closer look at the namespace : http://hapifhir.io/apidocs/ca/uhn/fhir/context/FhirContext.html reveals that the passing argument needs to be a java collection and thus 

(.setPerformanceOptions fhir-context opts)

must be changed to 

(.setPerformanceOptions fhir-context (java.util.ArrayList. [opts]))

or simplier

(.setPerformanceOptions fhir-context [opts] )

Upvotes: 1

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