Closed
Description
Describe the bug
I am able to generate a care plan using a minimal Plan Definition. When I add a condition to the plan definition, the app crashes instead with
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean org.hl7.fhir.r4.model.Base.isResource()' on a null object reference
at org.hl7.fhir.r4.utils.FHIRPathEngine.evaluate(FHIRPathEngine.java:525)
at org.hl7.fhir.r4.hapi.fluentpath.FhirPathR4.evaluate(FhirPathR4.java:31)
at org.opencds.cqf.cql.evaluator.plandefinition.r4.PlanDefinitionProcessor.evaluateConditionOrDynamicValue(PlanDefinitionProcessor.java:568)
at org.opencds.cqf.cql.evaluator.plandefinition.r4.PlanDefinitionProcessor.meetsConditions(PlanDefinitionProcessor.java:458)
at org.opencds.cqf.cql.evaluator.plandefinition.r4.PlanDefinitionProcessor.resolveAction(PlanDefinitionProcessor.java:174)
at org.opencds.cqf.cql.evaluator.plandefinition.r4.PlanDefinitionProcessor.resolveActions(PlanDefinitionProcessor.java:161)
at org.opencds.cqf.cql.evaluator.plandefinition.r4.PlanDefinitionProcessor.apply(PlanDefinitionProcessor.java:136)
at com.google.android.fhir.workflow.FhirOperator.generateCarePlan(FhirOperator.kt:241)
at com.example.enginetest.MainActivity$onCreate$1.invokeSuspend(MainActivity.kt:117)
Component
Workflow Library
To Reproduce
See https://github.com/williamito/fhir-engine-test/blob/main/app/src/main/java/com/example/enginetest/MainActivity.kt
It works with
{
"resourceType": "PlanDefinition",
"id": "Test-PlanDefinition",
"status": "active",
"action": [
{
"definitionCanonical": "http://example.org/ActivityDefinition/ADTest"
}
]
}And crashes with
{
"resourceType": "PlanDefinition",
"id": "Test-PlanDefinitionCondition",
"status": "active",
"action": [
{
"condition": [
{
"kind": "applicability",
"expression": {
"language": "text/fhirpath",
"expression": "true"
}
}
],
"definitionCanonical": "http://example.org/ActivityDefinition/ADTest"
}
]
}I also tried variations of "language": "text/cql" and got a similar crash from the CQL libraries complaining about a missing resource.
Expected behavior
Trivial condition evaluates to true and care plan is generated.
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Status
Complete