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Question

I am using Kotlin as a Jsr223 Scripting Engine in my Projekt. The call of a script looks like this:

val engine = ScriptEngineManager().getEngineByExtension("main.kts")!!
engine.getBindings(ScriptContext.GLOBAL_SCOPE).put("typedDocument", parameters["typedDocument"] as TypedDocument)
engine.eval(script.sourceCode)
var result = engine.eval("run()")

The engine basically works but when it comes to passing complex objects from the outside in, there is a strange quirk:

This script (executed inside the engine) works well:

fun run() {
    println(typedDocument)
}

It successfully prints the complex object to the hosts console:

TypedDocument(document=Document(id=a3eaf071-7803-4748-9dac-24e86b89767a, documentTypeId=38ca1a16-db8c-436f-af1c-a586ebe41056, values={title=New Ticket asdasd  xx, Bla=asdsd, Datum=2024-09-12, choose=Apfelsine}, actions=[ActionDescriptor(action=document.save, label={{document.save}}, defaultParameters={}, dialogDescriptor=null, level=PRIMARY), ActionDescriptor(action=document.delete, label={{document.delete}}, defaultParameters={}, dialogDescriptor=DialogDescriptor(type=CONFIRMATION, targetParameter=confirmed, parameters={title={{document.delete.confirm.title}}, message={{document.delete.confirm.message}}, level=DANGER}), level=DANGER)]), documentType=Ticket)

Now if i try to access the documentType property (which definetly exists) like this:

fun run() {
    println(typedDocument.documentType)
}

It will raise an error:

javax.script.ScriptException: ERROR Unresolved reference: documentType (ScriptingHost5a0a398_Line_0.main.kts:3:27)
        at org.jetbrains.kotlin.cli.common.repl.KotlinJsr223JvmScriptEngineBase.asJsr223EvalResult(KotlinJsr223JvmScriptEngineBase.kt:104)
        at org.jetbrains.kotlin.cli.common.repl.KotlinJsr223JvmScriptEngineBase.compileAndEval(KotlinJsr223JvmScriptEngineBase.kt:63)
        at kotlin.script.experimental.jvmhost.jsr223.KotlinJsr223ScriptEngineImpl.compileAndEval(KotlinJsr223ScriptEngineImpl.kt:95)
        at org.jetbrains.kotlin.cli.common.repl.KotlinJsr223JvmScriptEngineBase.eval(KotlinJsr223JvmScriptEngineBase.kt:31)
        at java.scripting/javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:262)
        at com.example.starter.base.core.app.controller.ScriptHostController.executeScript(ScriptHostController.kt:37)
        at com.example.starter.base.core.app.controller.actions.SaveDocumentAction.execute(SaveDocumentAction.kt:33)
        at com.example.starter.base.core.app.controller.actions.SaveDocumentAction_ClientProxy.execute(Unknown Source)
        at com.example.starter.base.core.app.controller.ActionController.callAction(ActionController.kt:19)
        at com.example.starter.base.ui.adapter.local.ActionLocalAdapter.callAction(ActionLocalAdapter.kt:14)
        at com.example.starter.base.ui.app.view.action.ActionHandler.executeAction(ActionHandler.kt:38)
        at com.example.starter.base.ui.app.view.action.ActionHandler.handleAction(ActionHandler.kt:34)
        at com.example.starter.base.ui.app.view.action.ActionHandler_ClientProxy.handleAction(Unknown Source)
        at com.example.starter.base.ui.app.view.action.ActionBar.updateActions$lambda$2$lambda$0(ActionBar.kt:49)
        at com.vaadin.flow.component.ComponentEventBus.fireEventForListener(ComponentEventBus.java:239)
        at com.vaadin.flow.component.ComponentEventBus.handleDomEvent(ComponentEventBus.java:488)
        at com.vaadin.flow.component.ComponentEventBus.lambda$addDomTrigger$dd1b7957$1(ComponentEventBus.java:298)
        at com.vaadin.flow.internal.nodefeature.ElementListenerMap.lambda$fireEvent$2(ElementListenerMap.java:447)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
        at com.vaadin.flow.internal.nodefeature.ElementListenerMap.fireEvent(ElementListenerMap.java:447)
        at com.vaadin.flow.server.communication.rpc.EventRpcHandler.handleNode(EventRpcHandler.java:62)
        at com.vaadin.flow.server.communication.rpc.AbstractRpcInvocationHandler.handle(AbstractRpcInvocationHandler.java:74)
        at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocationData(ServerRpcHandler.java:466)
        at com.vaadin.flow.server.communication.ServerRpcHandler.lambda$handleInvocations$4(ServerRpcHandler.java:447)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
        at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:447)
        at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:324)
        at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:114)
        at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
        at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1574)
        at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:398)
        at com.vaadin.quarkus.QuarkusVaadinServlet.service(QuarkusVaadinServlet.java:84)
        at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
        at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
        at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:63)
        at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
        at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
        at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:67)
        at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:133)
        at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
        at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:65)
        at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
        at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
        at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
        at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:247)
        at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:56)
        at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:111)
        at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:108)
        at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
        at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
        at io.quarkus.undertow.runtime.UndertowDeploymentRecorder$9$1.call(UndertowDeploymentRecorder.java:626)
        at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227)
        at io.undertow.servlet.handlers.ServletInitialHandler.handleRequest(ServletInitialHandler.java:152)
        at io.undertow.server.handlers.CanonicalPathHandler.handleRequest(CanonicalPathHandler.java:49)
        at io.quarkus.undertow.runtime.UndertowDeploymentRecorder$1.handleRequest(UndertowDeploymentRecorder.java:125)
        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:284)
        at io.undertow.server.DefaultExchangeHandler.handle(DefaultExchangeHandler.java:18)
        at io.quarkus.undertow.runtime.UndertowDeploymentRecorder$5$2.run(UndertowDeploymentRecorder.java:441)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at io.quarkus.vertx.core.runtime.VertxCoreRecorder$14.runWith(VertxCoreRecorder.java:582)
        at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538)
        at org.jboss.threads.DelegatingRunnable.run(DelegatingRunnable.java:29)
        at org.jboss.threads.ThreadLocalResettingRunnable.run(ThreadLocalResettingRunnable.java:29)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Thread.java:840)

Every call to the object fails the same way, except the calls to methods of Object. For example the following also works well:

fun run() {
    println(typedDocument.hashCode())
}

Any Ideas? The documentation on this feature and reference implementations are very rare. So rare that even AI is useless 🙂

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Danh mục

Unresolved Reference for each call on objects in Kotlin jsr223