L3 - Default Environment (Required on creation):
Description (Required on creation; please attach any relevant screenshots, stacktraces, log files, etc. to the ticket):
During evaluating of expression an ELException is thrown. Prerequisites are the expression to contain method with two parameters having the same type. E.g.:
${S(response)
.childElement("Body")
.childElement(base_url, "GetWeatherResponse")
.childElement("GetWeatherResult")
.textContent()}
Stacktrace:
SEVERE: ENGINE-16004 Exception while closing command context: Error while evaluating expression: ${S(response)
.childElement("Body")
.childElement(base_url, "GetWeatherResponse")
.childElement("GetWeatherResult")
.textContent()}. Cause: Bad argument count
org.camunda.bpm.engine.ProcessEngineException: Error while evaluating expression: ${S(response)
.childElement("Body")
.childElement(base_url, "GetWeatherResponse")
.childElement("GetWeatherResult")
.textContent()}. Cause: Bad argument count
at org.camunda.bpm.engine.impl.el.JuelExpression.getValue(JuelExpression.java:67)
at org.camunda.bpm.engine.impl.el.JuelExpression.getValue(JuelExpression.java:51)
at org.camunda.bpm.engine.impl.el.ElValueProvider.getValue(ElValueProvider.java:40)
at org.camunda.bpm.engine.impl.core.variable.mapping.OutputParameter.execute(OutputParameter.java:47)
at org.camunda.bpm.engine.impl.core.variable.mapping.IoParameter.execute(IoParameter.java:51)
at org.camunda.bpm.engine.impl.core.variable.mapping.IoMapping.executeOutputParameters(IoMapping.java:45)
at org.camunda.connect.plugin.impl.ServiceTaskConnectorActivityBehavior.applyOutputParameters(ServiceTaskConnectorActivityBehavior.java:88)
at org.camunda.connect.plugin.impl.ServiceTaskConnectorActivityBehavior$1.call(ServiceTaskConnectorActivityBehavior.java:62)
at org.camunda.connect.plugin.impl.ServiceTaskConnectorActivityBehavior$1.call(ServiceTaskConnectorActivityBehavior.java:55)
at org.camunda.bpm.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.executeWithErrorPropagation(AbstractBpmnActivityBehavior.java:90)
at org.camunda.connect.plugin.impl.ServiceTaskConnectorActivityBehavior.execute(ServiceTaskConnectorActivityBehavior.java:55)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute$2.callback(PvmAtomicOperationActivityExecute.java:61)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute$2.callback(PvmAtomicOperationActivityExecute.java:50)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueIfExecutionDoesNotAffectNextOperation(PvmExecutionImpl.java:2082)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute.execute(PvmAtomicOperationActivityExecute.java:42)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute.execute(PvmAtomicOperationActivityExecute.java:31)
at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:130)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:110)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:85)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:622)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:596)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:2021)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:2018)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueExecutionIfNotCanceled(PvmExecutionImpl.java:2088)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2037)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2018)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:61)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:30)
at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:70)
at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:130)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:110)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:85)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:75)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:631)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:606)
at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:66)
at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:130)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:110)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:85)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:75)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:631)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:606)
at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:66)
at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:130)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:110)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:85)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:622)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:596)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionCreateScope.scopeCreated(PvmAtomicOperationTransitionCreateScope.java:38)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationCreateScope.execute(PvmAtomicOperationCreateScope.java:53)
at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationCreateScope.execute(PvmAtomicOperationCreateScope.java:27)
at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:130)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:117)
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:85)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:622)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:596)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.start(PvmExecutionImpl.java:292)
at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:449)
at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.start(PvmExecutionImpl.java:269)
at org.camunda.bpm.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:66)
at org.camunda.bpm.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:38)
at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28)
at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110)
at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70)
at org.camunda.bpm.engine.impl.interceptor.CommandCounterInterceptor.execute(CommandCounterInterceptor.java:35)
at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.camunda.bpm.engine.impl.interceptor.ExceptionCodeInterceptor.execute(ExceptionCodeInterceptor.java:55)
at org.camunda.bpm.engine.impl.ProcessInstantiationBuilderImpl.executeWithVariablesInReturn(ProcessInstantiationBuilderImpl.java:166)
at org.camunda.bpm.engine.impl.ProcessInstantiationBuilderImpl.execute(ProcessInstantiationBuilderImpl.java:132)
at org.camunda.bpm.engine.impl.ProcessInstantiationBuilderImpl.execute(ProcessInstantiationBuilderImpl.java:128)
at org.camunda.bpm.engine.impl.RuntimeServiceImpl.startProcessInstanceByKey(RuntimeServiceImpl.java:112)
at org.camunda.bpm.example.servicetask.soap.ServiceTaskSoapTest.shouldCallMockedServiceWithTemperature17(ServiceTaskSoapTest.java:75)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61)
at org.camunda.bpm.engine.test.ProcessEngineRule$1.evaluate(ProcessEngineRule.java:185)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at com.github.tomakehurst.wiremock.junit.WireMockClassRule$1.evaluate(WireMockClassRule.java:70)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:93)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: org.camunda.bpm.engine.impl.javax.el.ELException: Bad argument count
at org.camunda.bpm.engine.impl.javax.el.BeanELResolver.coerceParams(BeanELResolver.java:600)
at org.camunda.bpm.engine.impl.javax.el.BeanELResolver.invoke(BeanELResolver.java:494)
at org.camunda.bpm.engine.impl.el.AbstractElResolverDelegate.invoke(AbstractElResolverDelegate.java:97)
at org.camunda.bpm.engine.impl.javax.el.CompositeELResolver.invoke(CompositeELResolver.java:397)
at org.camunda.bpm.engine.impl.juel.AstMethod.invoke(AstMethod.java:91)
at org.camunda.bpm.engine.impl.juel.AstMethod.eval(AstMethod.java:75)
at org.camunda.bpm.engine.impl.juel.AstMethod.invoke(AstMethod.java:79)
at org.camunda.bpm.engine.impl.juel.AstMethod.eval(AstMethod.java:75)
at org.camunda.bpm.engine.impl.juel.AstMethod.invoke(AstMethod.java:79)
at org.camunda.bpm.engine.impl.juel.AstMethod.eval(AstMethod.java:75)
at org.camunda.bpm.engine.impl.juel.AstEval.eval(AstEval.java:50)
at org.camunda.bpm.engine.impl.juel.AstNode.getValue(AstNode.java:26)
at org.camunda.bpm.engine.impl.juel.TreeValueExpression.getValue(TreeValueExpression.java:114)
at org.camunda.bpm.engine.impl.delegate.ExpressionGetInvocation.invoke(ExpressionGetInvocation.java:40)
at org.camunda.bpm.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:58)
at org.camunda.bpm.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocationInContext(DefaultDelegateInterceptor.java:92)
at org.camunda.bpm.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:63)
at org.camunda.bpm.engine.impl.el.JuelExpression.getValue(JuelExpression.java:60)
... 107 more
Steps to reproduce (Required on creation):
- Change the Camunda version to 7.18.0-alpha6 in SOAP Service Task
- Execute the test in the project via IDE or mvn clean install on command line
Observed Behavior (Required on creation):
An exception ELException: Bad argument count is thrown
Expected behavior (Required on creation):
The expressions are evaluated succesfully and the test passes.
Root Cause (Required on prioritization):
During the evaluation of the expression to resolve the method parameters types a Set collection is used. So when having the method expression .childElement(base_url, "GetWeatherResponse") only one time the String type is stored for later resolve. [1]
That leads to mismatch of the passed parameters and the arguments of the resolved method. [2]
[1]: https://github.com/camunda/camunda-bpm-platform/blob/master/engine/src/main/java/org/camunda/bpm/engine/impl/javax/el/BeanELResolver.java#L508-L511
[2]: https://github.com/camunda/camunda-bpm-platform/blob/e34071d682bb37bc5e6a657844c8250f0d1e4e9f/engine/src/main/java/org/camunda/bpm/engine/impl/javax/el/BeanELResolver.java#L599-L601
Solution Ideas (Optional):
- Change the collection to List (for detectedTypes) so that all of the parameter types are stored and the order of the them as well. [3]
[3]: https://github.com/camunda/camunda-bpm-platform/blob/e34071d682bb37bc5e6a657844c8250f0d1e4e9f/engine/src/main/java/org/camunda/bpm/engine/impl/javax/el/BeanELResolver.java#L508- PR (ignore whitespaces) - https://github.com/camunda/camunda-bpm-platform/pull/2029
- Only proper testing might take time.