I need to access CamelLoopIndex within a route. According to
http://camel.apache.org/loop.html, CamelLoopIndex is a property in the
Exchange while in the loop. I tried this simple test route:
<camel:route>
<camel:from uri="file:src/data?noop=true"/>
<setBody><constant>Count </constant></setBody>
<camel:loop>
<constant>5</constant>
<setBody><camel:spel>#{body + ':' +
property(CamelLoopIndex)}</camel:spel></setBody>
<camel:to uri="file:target/messages/out" />
</camel:loop>
</camel:route>
But I received the error below. Any help will be greatly appreciated.
org.apache.camel.ExpressionEvaluationException:
org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos
22): Field or property 'CamelLoopIndex' cannot be found on object of type
'org.apache.camel.language.spel.RootObject'
at
org.apache.camel.language.spel.SpelExpression.evaluate(SpelExpression.java:64)
at
org.apache.camel.processor.SetBodyProcessor.process(SetBodyProcessor.java:38)
at
org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.interceptor.BacklogTracerInterceptor.process(BacklogTracerInterceptor.java:84)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:91)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:390)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:273)
at
org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.interceptor.DefaultChannel.process(DefaultChannel.java:335)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:117)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.LoopProcessor.process(LoopProcessor.java:103)
at
org.apache.camel.processor.LoopProcessor.process(LoopProcessor.java:74)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.interceptor.BacklogTracerInterceptor.process(BacklogTracerInterceptor.java:84)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:91)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:390)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:273)
at
org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.interceptor.DefaultChannel.process(DefaultChannel.java:335)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:117)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at
org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.processor.UnitOfWorkProcessor.processAsync(UnitOfWorkProcessor.java:150)
at
org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:117)
at
org.apache.camel.processor.RouteInflightRepositoryProcessor.processNext(RouteInflightRepositoryProcessor.java:48)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
at
org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:350)
at
org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:197)
at
org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:163)
at
org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:141)
at
org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:91)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at
java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.springframework.expression.spel.SpelEvaluationException:
EL1008E:(pos 22): Field or property 'CamelLoopIndex' cannot be found on
object of type 'org.apache.camel.language.spel.RootObject'
at
org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:208)
at
org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:72)
at
org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:65)
at
org.springframework.expression.spel.ast.OpPlus.getValueInternal(OpPlus.java:70)
at
org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:93)
at
org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:88)
at
org.apache.camel.language.spel.SpelExpression.evaluate(SpelExpression.java:60)
... 71 more
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