POST Bundle With ifNoneExist Clause Incorrectly Rejected With Invalid Match URL ERROR

[KevinDougan]

Describe the bug
When POSTing a Bundle with a ifNoneExist clause, the server incorrectly rejects it with:

IllegalArgumentException: Invalid match URL format (must match "[resourceType]?[params]").

To Reproduce

1. PUT the following SearchParameter to the server at http://localhost:8080/fhir/SearchParameter/patient-first-identifier:

{
    "resourceType": "SearchParameter",
    "status": "active",
    "id": "patient-first-identifier",
    "code": "patient-first-identifier",
    "type": "token",
    "base": [
        "Patient"
    ],
    "expression": "Patient.identifier.first()"
}

2. POST the following Bundle to the server at http://localhost:8080/fhir:

{
    "resourceType": "Bundle",
    "type": "transaction",
    "entry": [
        {
            "fullUrl": "urn:uuid:3155007d-6761-4275-bbad-31fba2b09d62",
            "resource": {
                "resourceType": "Patient",
                "identifier": [
                    {
                        "use": "official",
                        "type": {
                            "coding": [
                                {
                                    "system": "http://terminology.hl7.org/CodeSystem/v2-0203",
                                    "code": "MR"
                                }
                            ]
                        },
                        "system": "MRN",
                        "value": "123456789"
                    }
                ],
                "name": [
                    {
                        "use": "official",
                        "family": "Doe",
                        "given": [
                            "John"
                        ]
                    }
                ],
                "gender": "male",
                "birthDate": "1990-12-21",
                "deceasedBoolean": false
            },
            "request": {
                "method": "POST",
                "url": "/Patient",
                "ifNoneExist": "patient-first-identifier=MRN%7C123456789"
            }
        }
    ]
}

3. Notice that the server rejects it with the following ERROR:

{
    "resourceType": "OperationOutcome",
    "issue": [
        {
            "severity": "error",
            "code": "processing",
            "diagnostics": "HAPI-0389: Failed to call access method: java.lang.IllegalArgumentException: Invalid match URL format (must match \"[resourceType]?[params]\")"
        }
    ]
}

Observed behavior
The server rejects the Bundle with an IllegalArgumentException and does not create the Patient resource.

Expected behavior
The server should accept the Bundle and create the Patient resource.

Environment:

• HAPI FHIR Version 6.5.0-SNAPSHOT