Merge pull request #8 from thedumbterminal/anyOfMultipleTypes

Supporting nullable types using anyof syntax

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## v0.0.7 (13/08/2018)
+
+* Support fields with nullable types using `anyOf` method.
+
 ## v0.0.6 (11/08/2018)
 
 * Supports `allOf`, `anyOf` and `oneOf` combined schemas.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jsonschema-bigquery",
-  "version": "0.0.6",
+  "version": "0.0.7",
   "description": "Convert JSON schema to Google BigQuery schema",
   "main": "src/index.js",
   "scripts": {

src/merger.js

@@ -24,6 +24,15 @@ merger._mergeItem = (dst, src) => {
 			return merger._mergeItem(dst[entry[0]], entry[1])
 		}
 
+		//Convert type to an array if needed
+		if(entry[0] === 'type'){
+			const types = new Set([dst[entry[0]], entry[1]])
+			if(types.size > 1){
+				dst[entry[0]] = Array.from(types)
+			}
+			return
+		}
+
 		throw new Error(`Incompatible field: ${entry[0]}`)
 	})
 	return dst

test/samples/anyOfMultipleTypes/expected.json

@@ -0,0 +1,11 @@
+{
+	"schema": {
+		"fields": [
+			{
+				"name": "first_name",
+				"type": "STRING",
+				"mode": "NULLABLE"
+			}
+		]
+	}
+}

test/samples/anyOfMultipleTypes/input.json

@@ -0,0 +1,20 @@
+{
+	"id": "http://yourdomain.com/schemas/myschema.json",
+	"description": "Example description",
+	"type": "object",
+	"properties": {
+		"first_name": {
+			"anyOf": [
+				{
+					"type": "string"
+				},
+				{
+					"type": "null"
+				}
+			]
+		}
+	},
+	"required": [
+		"first_name"
+	]
+}