Enable java code generation with operation reflection

bundles/nl.esi.xplus.xtext.generator/src/nl/esi/xplus/xtext/generator/ecore/EMFGeneratorFragment.xtend

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) 2024, 2026 TNO-ESI
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package nl.esi.xplus.xtext.generator.ecore
+
+import org.eclipse.emf.ecore.resource.ResourceSet
+import org.eclipse.xtext.Grammar
+import org.eclipse.xtext.xtext.generator.ecore.EMFGeneratorFragment2
+import org.eclipse.xtend.lib.annotations.Accessors
+
+@Accessors
+class EMFGeneratorFragment extends EMFGeneratorFragment2 {
+
+    boolean operationReflection = false;
+
+    override protected getGenModel(ResourceSet rs, Grammar grammar) {
+        val genModel = super.getGenModel(rs, grammar)
+        genModel.operationReflection = true
+        return genModel
+    }
+
+
+}

bundles/nl.esi.xtext.actions/src/nl/esi/xtext/actions/GenerateActions.mwe2

@@ -58,8 +58,9 @@ Workflow {
 			junitSupport = {
 				junitVersion = "5"
 			}
-            emfGenerator = {
+            emfGenerator = nl.esi.xplus.xtext.generator.ecore.EMFGeneratorFragment {
                 generateEdit = true
+                operationReflection = true
                 editDirectory = "${baseName}.edit/src-gen"
             }
 		}

bundles/nl.esi.xtext.common.lang/src/nl/esi/xtext/common/lang/GenerateBase.mwe2

@@ -59,11 +59,11 @@ Workflow {
             junitSupport = {
                 junitVersion = "5"
             }
-            emfGenerator = {
+            emfGenerator = nl.esi.xplus.xtext.generator.ecore.EMFGeneratorFragment {
                 generateEdit = true
+                operationReflection = true
                 editDirectory = "${baseName}.edit/src-gen"
             }
-
         }
     }
 }

bundles/nl.esi.xtext.expressions.tests/src/nl/esi/xtext/expressions/tests/ExpressionEvaluatorFunctionTest.xtend

@@ -48,6 +48,28 @@ class ExpressionEvaluatorFunctionTest extends ExpressionEvaluatorTestBase {
         ''')
     }
 
+
+    @Test
+    def void basedOnTemplateTest() {
+        assertEval('''
+            type derived based on string
+            derived[] dArray = <derived[]>["d" ]
+            string[] sArray = <string[]>["s" ]
+            string xD = "d"
+            derived yD = "d"
+            string xS = "s"
+            derived yS = "s"
+        ''', '''
+            type derived based on string
+            derived[] dArray = <derived[]>["d" ]
+            string[] sArray = <string[]>["s" ]
+            string xD = get(dArray, 0)
+            derived yD = get(dArray, 0)
+            string xS = get(sArray, 0)
+            derived yS = get(sArray, 0)
+        ''')
+    }
+
     @Test
     def void size() {
         assertEval('''

bundles/nl.esi.xtext.expressions/src/nl/esi/xtext/expressions/GenerateExpression.mwe2

@@ -63,8 +63,9 @@ Workflow {
             junitSupport = {
                 junitVersion = "5"
             }
-            emfGenerator = {
+            emfGenerator = nl.esi.xplus.xtext.generator.ecore.EMFGeneratorFragment {
                 generateEdit = true
+                operationReflection = true
                 editDirectory = "${baseName}.edit/src-gen"
             }
         }

bundles/nl.esi.xtext.types/src/nl/esi/xtext/types/GenerateTypes.mwe2

@@ -62,8 +62,9 @@ Workflow {
             junitSupport = {
                 junitVersion = "5"
             }
-            emfGenerator = {
+            emfGenerator = nl.esi.xplus.xtext.generator.ecore.EMFGeneratorFragment {
                 generateEdit = true
+                operationReflection = true
                 editDirectory = "${baseName}.edit/src-gen"
             }
         }