Support for fhirpath evaluation

[costateixeira]

When using fhirpath option, with the command line

java -jar '.\validator_cli.jar' -version R4 -fhirpath "Bundle.entry[0].resourceType" .\peroniv3.json

I get an error "no parent on root resource" - it's not clear if I am doing something wrong. Can we have a working example or a

Full error log:

FHIR Validation tool Version 6.2.4 (Git# 29b1cd9). Built 2023-11-15T19:28:56.792Z (204 days old)
Java: 17.0.7 from c:\work\jdk-17.0.7 on amd64 (64bit). 15288MB available

WARNING: Default file encoding is windows-1252 which may cause unexpected results.
To fix this issue, run this program with the parameter '-Dfile.encoding=UTF-8'
Future releases may not be able to run at all with encoding windows-1252

Paths: Current = C:\Users\Jose\Downloads, Package Cache = C:\Users\Jose.fhir\packages
Params: -version R4 -fhirpath Bundle.entry[0].resource.resourceType .\peroniv3.json -debug
Locale: United Kingdom/GB
Jurisdiction: United Kingdom of Great Britain and Northern Ireland
Loading
Load FHIR v4.0.1 from hl7.fhir.r4.core#4.0.1 - 4576 resources (00:03.134)
Load hl7.fhir.uv.extensions.r4#1.0.0 - 1328 resources (00:01.338)
Load hl7.terminology#5.5.0 - 4224 resources (00:00.661)
Load hl7.terminology.r5#5.5.0 - 4224 resources (00:00.403)
Load hl7.fhir.uv.extensions#5.1.0 - 1396 resources (00:00.708)
Terminology server http://tx.fhir.org - Version 3.4.6 (00:01.047)
Package Summary: [hl7.fhir.r4.core#4.0.1, hl7.fhir.xver-extensions#0.0.12, hl7.fhir.uv.extensions.r4#1.0.0, hl7.terminology#5.5.0, hl7.terminology.r5#5.5.0, hl7.fhir.uv.extensions#5.1.0]
Get set... Generating snapshot for http://hl7.org/fhir/StructureDefinition/string|4.0.1
go (00:00.141)
...evaluating Bundle.entry[0].resource.resourceType
Exception in thread "main" java.lang.Error: No parent on root resource
at org.hl7.fhir.validation.instance.utils.ValidationContext.check(ValidationContext.java:47)
at org.hl7.fhir.validation.instance.utils.ValidationContext.(ValidationContext.java:39)
at org.hl7.fhir.validation.ValidationEngine.evaluateFhirPath(ValidationEngine.java:802)
at org.hl7.fhir.validation.cli.services.ValidationService.evaluateFhirpath(ValidationService.java:321)
at org.hl7.fhir.validation.cli.tasks.FhirpathTask.executeTask(FhirpathTask.java:41)
at org.hl7.fhir.validation.ValidatorCli.readParamsAndExecuteTask(ValidatorCli.java:393)
at org.hl7.fhir.validation.ValidatorCli.readParamsAndExecuteTask(ValidatorCli.java:188)
at org.hl7.fhir.validation.ValidatorCli.main(ValidatorCli.java:223)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 5 days if no further activity occurs. Thank you for your contributions.