feat(model-sync-lib): added function to directly import a json file

Author: mhuster23

model-sync-lib/src/main/kotlin/org/modelix/model/sync/ModelImporter.kt

@@ -3,11 +3,20 @@ package org.modelix.model.sync
 import org.modelix.model.api.*
 import org.modelix.model.data.ModelData
 import org.modelix.model.data.NodeData
+import java.io.File
 
 class ModelImporter(private val branch: IBranch) {
 
     private lateinit var originalIdToRef: MutableMap<String, INodeReference>
 
+    fun import(jsonFile: File) {
+        require(jsonFile.exists())
+        require(jsonFile.extension == "json")
+
+        val data = ModelData.fromJson(jsonFile.readText())
+        import(data)
+    }
+    
     fun import(data: ModelData) {
         originalIdToRef = mutableMapOf()
         branch.runWrite {

model-sync-lib/src/test/kotlin/org/modelix/model/sync/ModelImporterTest.kt

@@ -27,7 +27,8 @@ class ModelImporterTest {
         @BeforeAll
         fun `load and import model`() {
             model = ModelData.fromJson(File("src/test/resources/model.json").readText())
-            newModel = ModelData.fromJson(File("src/test/resources/newmodel.json").readText())
+            val newModelFile = File("src/test/resources/newmodel.json")
+            newModel = ModelData.fromJson(newModelFile.readText())
 
             val tree = CLTree(ObjectStoreCache(MapBaseStore()))
             branch = PBranch(tree, IdGenerator.getInstance(1))
@@ -36,7 +37,7 @@ class ModelImporterTest {
                 model.load(branch)
 //                println("PRE-SPEC ${model.toJson()}")
 //                println("PRE-LOADED ${branch.getRootNode().toJson()}")
-                ModelImporter(branch).import(newModel)
+                ModelImporter(branch).import(newModelFile)
 //                println("POST-SPEC ${newModel.root.toJson()}")
 //                println("POST-LOADED ${branch.getRootNode().toJson()}")
             }