Accessing a field of a Java Record class throws NoSuchPropertyException

[marcules]

Hi!

When I try to access a field from a Java Record Class, AviatorJavaType#getProperty() throws a NoSuchPropertyException.

Here's a minimal example:

    @Test
    void aviatorRecordType() {
        record SubjectReq(String name) {}
        record ObjectReq(String name) {}
        enum ActionReq {action_one, action_two}

        final Object result = AviatorEvaluator.execute("""
                println(sub);
                println(obj);
                println(act);

                println(sub.name);
                println(obj.name);

                return true;
                """, Map.of(
                "sub", new SubjectReq("sub_name"),
                "obj", new ObjectReq("obj_name"),
                "act", ActionReq.action_one));

        assertTrue((Boolean) result);
    }

logs:

SubjectReq[name=sub_name]
ObjectReq[name=obj_name]
action_one

throws:

com.googlecode.aviator.exception.ExpressionRuntimeException: Could not find variable sub.name

	at com.googlecode.aviator.runtime.type.AviatorJavaType.getProperty(AviatorJavaType.java:442)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getValueFromEnv(AviatorJavaType.java:331)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getValue(AviatorJavaType.java:319)
	at com.googlecode.aviator.runtime.function.system.PrintlnFunction.call(PrintlnFunction.java:54)
	at ... script ...
	at com.googlecode.aviator.ClassExpression.executeDirectly(ClassExpression.java:44)
	at com.googlecode.aviator.BaseExpression.execute(BaseExpression.java:237)
	at com.googlecode.aviator.AviatorEvaluatorInstance.execute(AviatorEvaluatorInstance.java:1639)
	at com.googlecode.aviator.AviatorEvaluator.execute(AviatorEvaluator.java:532)
	at com.googlecode.aviator.AviatorEvaluator.execute(AviatorEvaluator.java:544)
	at ...mytestclass...
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:147)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:127)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:90)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:55)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:102)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:54)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
	at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
	at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)
	at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
	at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)
Caused by: com.googlecode.aviator.exception.NoSuchPropertyException: Property `name` not found in java bean: SubjectReq[name=sub_name]
	at com.googlecode.aviator.utils.Reflector.throwNoSuchPropertyException(Reflector.java:268)
	at com.googlecode.aviator.utils.Reflector.fastGetProperty(Reflector.java:256)
	at com.googlecode.aviator.utils.Reflector.fastGetProperty(Reflector.java:816)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getProperty(AviatorJavaType.java:432)
	... 80 more

If I try to access a "normal" (+lombok) Object field, it works like expected:

Normal class test:

    @Test
    void aviatorClassType() {

        @Data
        @AllArgsConstructor
        class SubjectReqObj {
            final String name;
        }

        @Data
        @AllArgsConstructor
        class ObjectReqObj {
            final String name;
        }

        enum ActionReq {action_one, action_two}

        final Object result = AviatorEvaluator.execute("""
                println(sub);
                println(obj);
                println(act);

                println(sub.name);
                println(obj.name);

                return true;
                """, Map.of(
                "sub", new SubjectReqObj("sub_name"),
                "obj", new ObjectReqObj("obj_name"),
                "act", ActionReq.action_one));

        assertTrue((Boolean) result);
    }

Normal class logs:

SubjectReqObj(name=sub_name)
ObjectReqObj(name=obj_name)
action_one
sub_name
obj_name

Is this something that is not implemented (yet) or am I using it wrong?

Kind Regards, Marc

[marcules]

Hello again! If I declare my records with lombok-annotations the code above works, so it looks like only bean convention is supported.

This works:

        record SubjectReq(@Getter String name) {

        }

        record ObjectReq(@Getter String name) {

        }

Is "non-bean" convention something you want to support in the future?

Kind Regards, Marc

[killme2008]

I haven't used Record before, looks cool. Let me take some time to learn it and decide whether to change the behavior.