java - 运行时异常 : Unexpected global[] in Drools

Question

我在使用 Spring 和 Drools 时遇到问题。我的主要问题是在单元测试中不会发生错误。下面是异常情况

java.lang.RuntimeException: Unexpected global [premioService]

当我尝试在 KieSession 中设置全局变量时发生此错误 看到方法 StatefulKnowledgeSessionImpl#setGlobal(String, Object) 似乎我应该设置 创建 newInstance 之前的全局变量。遵循 StatefulKnowledgeSessionImpl#setGlobal 代码:

    public void setGlobal(final String identifier,
                      final Object value) {
    // Cannot set null values
    if ( value == null ) {
        return;
    }

    try {
        this.kBase.readLock();
        startOperation();
        // Make sure the global has been declared in the RuleBase
        final Map globalDefintions = this.kBase.getGlobals();
        final Class type = (Class) globalDefintions.get( identifier );
        if ( (type == null) ) {
            throw new RuntimeException( "Unexpected global [" + identifier + "]" );
        } else if ( !type.isInstance( value ) ) {
            throw new RuntimeException( "Illegal class for global. " + "Expected [" + type.getName() + "], " + "found [" + value.getClass().getName() + "]." );

        } else {
            this.globalResolver.setGlobal( identifier,
                                           value );
        }
    } finally {
        endOperation();
        this.kBase.readUnlock();
    }
}

遵循我的代码:

@Inject
protected PremioVisaoService premioVisaoService;

protected final KieSession createSession() {
    return this.kieBase.newKieSession();
}
protected final int process() {
    final KieSession kieSession = this.createSession();
    Object rulesFired = 0;

    try {
        //here occurs the error
        kieSession.execute(CommandFactory.newSetGlobal(PREMIO_SERVICE_GLOBAL_ID, premioVisaoService));           
    } catch(Exception e) {
        e.printStackTrace();
    }
}




    package br.com.company.brms.model.rules;

import br.com.company.brms.model.*;
import br.com.company.brms.model.premios.*;
import br.com.company.brms.model.tarifas.*;

import function br.com.company.brms.helpers.DomainUtils.getPais;
import function br.com.company.brms.helpers.DomainUtils.getUF;
import function br.com.company.brms.helpers.PremioFactory.novoPremioVisaoPercursoPadrao;
import function br.com.company.brms.helpers.CalculoTarifaHelper.calculaTaxaBasica;

global br.com.company.brms.services.PremioVisaoService premioService;


rule "Rule Example"
ruleflow-group "calculo"
salience -1
when
$averbacao : Averbacao( indicadorAvaria == Constantes.STATUS_SIM )
$taxa : TarifaPercursoVigencia( tipoTarifa == TipoTarifa.AVARIA)
then
PremioVisaoPercursoPadrao premio = novoPremioVisaoPercursoPadrao($taxa, $averbacao);
premio.setValor( calculaTaxaBasica($taxa, $averbacao) );

//insert ( premio );
premioService.inserirPremioCalculado( premio );

//System.out.println( $averbacao + " calculada com o premio: " + premio );
end

在堆栈跟踪下方:

java.lang.RuntimeException: Unexpected global [premioService]
at org.drools.core.impl.StatefulKnowledgeSessionImpl.setGlobal(StatefulKnowledgeSessionImpl.java:1124)
at org.drools.core.command.runtime.SetGlobalCommand.execute(SetGlobalCommand.java:65)
at org.drools.core.impl.StatefulKnowledgeSessionImpl.execute(StatefulKnowledgeSessionImpl.java:665)
at org.drools.core.impl.StatefulKnowledgeSessionImpl.execute(StatefulKnowledgeSessionImpl.java:648)
at br.com.company.brms.services.impl.BilhetagemBpmnRunnerServiceImpl.processar(BilhetagemBpmnRunnerServiceImpl.java:87)
at br.com.company.brms.services.impl.BilhetagemBpmnRunnerServiceImpl.processarRegrasMercado(BilhetagemBpmnRunnerServiceImpl.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy68.processarRegrasMercado(Unknown Source)
at br.com.company.brms.services.impl.BilhetagemProcessManagerServiceImpl.processar(BilhetagemProcessManagerServiceImpl.java:111)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy69.processar(Unknown Source)
at br.com.company.brms.spi.impl.BilhetagemServiceAsyncImpl.processarPorCliente(BilhetagemServiceAsyncImpl.java:88)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:95)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

提前致谢

Answer 1

我的问题是我正在不同的 jar 中寻找 DRL 文件。我还不知道如何以正确的方式做到这一点。但问题确实解决了。