octofhir-sof 0.1.2

SQL on FHIR v2: ViewDefinition parser, PostgreSQL generator and database-free in-memory evaluator
Documentation 
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{
  "title": "full_fhirpath_function_set_in_memory",
  "description": "The in-memory path delegates per-expression FHIRPath evaluation to the real octofhir-fhirpath engine, so it supports the FULL FHIRPath function set (string manipulation, math, etc.) that the hand-lowered SQL subset rejects. These cases exercise functions the old subset evaluator did not implement. NOTE: these are in-memory only — they do NOT round-trip through the SQL generator and must not be added to a SQL-run harness.",
  "resources": [
    {
      "resourceType": "Patient",
      "id": "p1",
      "name": [
        { "given": ["Alexander"], "family": "Smith" }
      ]
    },
    {
      "resourceType": "Observation",
      "id": "o1",
      "status": "final",
      "code": { "text": "c" },
      "valueInteger": 41
    }
  ],
  "tests": [
    {
      "title": "substring on a navigated string",
      "view": {
        "resource": "Patient",
        "select": [
          {
            "column": [
              { "name": "id", "path": "id", "type": "string" },
              { "name": "abbr", "path": "name.given.first().substring(0, 3)", "type": "string" }
            ]
          }
        ]
      },
      "expect": [
        { "id": "p1", "abbr": "Ale" }
      ]
    },
    {
      "title": "upper and lower",
      "view": {
        "resource": "Patient",
        "select": [
          {
            "column": [
              { "name": "up", "path": "name.family.first().upper()", "type": "string" },
              { "name": "low", "path": "name.family.first().lower()", "type": "string" }
            ]
          }
        ]
      },
      "expect": [
        { "up": "SMITH", "low": "smith" }
      ]
    },
    {
      "title": "string length",
      "view": {
        "resource": "Patient",
        "select": [
          {
            "column": [
              { "name": "len", "path": "name.given.first().length()", "type": "integer" }
            ]
          }
        ]
      },
      "expect": [
        { "len": 9 }
      ]
    },
    {
      "title": "math on an integer choice value",
      "view": {
        "resource": "Observation",
        "select": [
          {
            "column": [
              { "name": "id", "path": "id", "type": "string" },
              { "name": "next", "path": "(value.ofType(integer) + 1)", "type": "integer" }
            ]
          }
        ]
      },
      "expect": [
        { "id": "o1", "next": 42 }
      ]
    }
  ]
}