Hello,
I am trying to invoke a rule table evaluation from REST.
I model the rule table in Modeler then publish it through Modeler.
The table is very simple
I make the REST Call POST using Insomnia:
http://localhost:8080/engine-rest/decision-definition/key/bankContacts/evaluate
With JSON Body
{
"variables" : {
"branchName" : { "value" : "A", "type" : "String" },
"bankName" : { "value" : "B", "type" : "String" }
}
}
I get the following response
{
"type": "RestException",
"message": "Cannot evaluate decision bankContacts:6:3fcb9d77-7a9f-11ec-b590-8e712f552304: Exception while evaluating decision with key 'null'"
}
Checking the logs I see:
21-Jan-2022 11:49:30.098 SEVERE [http-nio-8080-exec-10] org.camunda.commons.logging.BaseLogger.logError ENGINE-16004 Exception while closing command context: Exception while evaluating decision with key 'null'
org.camunda.bpm.engine.ProcessEngineException: Exception while evaluating decision with key 'null'
at org.camunda.bpm.engine.impl.dmn.cmd.EvaluateDecisionCmd.doEvaluateDecision(EvaluateDecisionCmd.java:90)
at org.camunda.bpm.engine.impl.dmn.cmd.EvaluateDecisionCmd.execute(EvaluateDecisionCmd.java:74)
at org.camunda.bpm.engine.impl.dmn.cmd.EvaluateDecisionCmd.execute(EvaluateDecisionCmd.java:44)
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.dmn.DecisionEvaluationBuilderImpl.evaluate(DecisionEvaluationBuilderImpl.java:83)
at org.camunda.bpm.engine.rest.sub.repository.impl.DecisionDefinitionResourceImpl.evaluateDecision(DecisionDefinitionResourceImpl.java:141)
at jdk.internal.reflect.GeneratedMethodAccessor852.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:138)
at org.jboss.resteasy.core.ResourceMethodInvoker.internalInvokeOnTarget(ResourceMethodInvoker.java:546)
at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTargetAfterFilter(ResourceMethodInvoker.java:435)
at org.jboss.resteasy.core.ResourceMethodInvoker.lambda$invokeOnTarget$0(ResourceMethodInvoker.java:396)
at org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:358)
at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:398)
at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:365)
at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:150)
at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:110)
at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:141)
at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:104)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:440)
at org.jboss.resteasy.core.SynchronousDispatcher.lambda$invoke$4(SynchronousDispatcher.java:229)
at org.jboss.resteasy.core.SynchronousDispatcher.lambda$preprocess$0(SynchronousDispatcher.java:135)
at org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:358)
at org.jboss.resteasy.core.SynchronousDispatcher.preprocess(SynchronousDispatcher.java:138)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:215)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:245)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:61)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: org.camunda.bpm.dmn.feel.impl.FeelException: FEEL/SCALA-01008 Error while evaluating expression: failed to evaluate expression 'A': no variable found for name 'A'
at org.camunda.bpm.dmn.feel.impl.scala.ScalaFeelLogger.evaluationException(ScalaFeelLogger.java:77)
at org.camunda.bpm.dmn.feel.impl.scala.ScalaFeelEngine.evaluateSimpleUnaryTests(ScalaFeelEngine.java:117)
at org.camunda.bpm.dmn.engine.impl.evaluation.DecisionTableEvaluationHandler.evaluateFeelSimpleUnaryTests(DecisionTableEvaluationHandler.java:246)
at org.camunda.bpm.dmn.engine.impl.evaluation.DecisionTableEvaluationHandler.evaluateInputEntry(DecisionTableEvaluationHandler.java:203)
at org.camunda.bpm.dmn.engine.impl.evaluation.DecisionTableEvaluationHandler.isConditionApplicable(DecisionTableEvaluationHandler.java:145)
at org.camunda.bpm.dmn.engine.impl.evaluation.DecisionTableEvaluationHandler.evaluateInputForAvailableRules(DecisionTableEvaluationHandler.java:137)
at org.camunda.bpm.dmn.engine.impl.evaluation.DecisionTableEvaluationHandler.evaluateDecisionTable(DecisionTableEvaluationHandler.java:111)
at org.camunda.bpm.dmn.engine.impl.evaluation.DecisionTableEvaluationHandler.evaluate(DecisionTableEvaluationHandler.java:81)
at org.camunda.bpm.dmn.engine.impl.DefaultDmnDecisionContext.evaluateDecision(DefaultDmnDecisionContext.java:85)
at org.camunda.bpm.dmn.engine.impl.DefaultDmnEngine.evaluateDecision(DefaultDmnEngine.java:167)
at org.camunda.bpm.engine.impl.dmn.invocation.DecisionInvocation.invoke(DecisionInvocation.java:57)
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.util.DecisionEvaluationUtil.invoke(DecisionEvaluationUtil.java:103)
at org.camunda.bpm.engine.impl.util.DecisionEvaluationUtil.evaluateDecision(DecisionEvaluationUtil.java:90)
at org.camunda.bpm.engine.impl.dmn.cmd.EvaluateDecisionCmd.doEvaluateDecision(EvaluateDecisionCmd.java:87)
... 61 more
Here is the table XML:
<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="https://www.omg.org/spec/DMN/20191111/MODEL/" xmlns:dmndi="https://www.omg.org/spec/DMN/20191111/DMNDI/" xmlns:dc="http://www.omg.org/spec/DMN/20180521/DC/" xmlns:biodi="http://bpmn.io/schema/dmn/biodi/2.0" xmlns:camunda="http://camunda.org/schema/1.0/dmn" id="resolveBankContacts" name="Resolve Bank Contacts" namespace="http://camunda.org/schema/1.0/dmn" exporter="Camunda Modeler" exporterVersion="4.11.0">
<decision id="bankContacts" name="Bank Contacts">
<decisionTable id="DecisionTable_0lt0omy">
<input id="indongoBranchName" label="branchName" biodi:width="237" camunda:inputVariable="branchName">
<inputExpression id="InputExpression_1" typeRef="string">
<text></text>
</inputExpression>
</input>
<input id="bankName" label="bankName" camunda:inputVariable="bankName">
<inputExpression id="LiteralExpression_13magf2" typeRef="string">
<text></text>
</inputExpression>
</input>
<output id="Output_1" label="contactEmail" name="contactEmail" typeRef="string" biodi:width="338" />
<rule id="DecisionRule_1wo4nqc">
<inputEntry id="UnaryTests_1t8tobj">
<text>A</text>
</inputEntry>
<inputEntry id="UnaryTests_0hvcqpp">
<text>B</text>
</inputEntry>
<outputEntry id="LiteralExpression_0uwqk3l">
<text>O1</text>
</outputEntry>
</rule>
<rule id="DecisionRule_1snp5pd">
<inputEntry id="UnaryTests_0yoagyc">
<text>A</text>
</inputEntry>
<inputEntry id="UnaryTests_14vmq6e">
<text>C</text>
</inputEntry>
<outputEntry id="LiteralExpression_1r62x2r">
<text>O2</text>
</outputEntry>
</rule>
</decisionTable>
</decision>
<dmndi:DMNDI>
<dmndi:DMNDiagram>
<dmndi:DMNShape dmnElementRef="bankContacts">
<dc:Bounds height="80" width="180" x="160" y="100" />
</dmndi:DMNShape>
</dmndi:DMNDiagram>
</dmndi:DMNDI>
</definitions>
