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使用CEP质子我想检查在一个时间间隔内接收到的事件，第二个和后续事件的ID是否包含在第一个事件中的类型数组的属性中。比方说，第一个事件是由称为组的整数属性（10,20,30）的属性组成的。以下事件将带有一个ID，例如20,25等。我想检查这些事件的ID是否包含在第一个事件中包含的属性组中。 对于我在EPAEPA CEP质子内的阵列条件
ArrayContains(ArrayGet(myevent.group,0),ArrayGet(myevent.id,ArraySize(myevent.id)-1))
创造了条件。然而我得到当我点击验证
Error Error in EPA: expression error of undefined myepa
难道我做错了什么错误？ 我无法使用ArrayGet访问属性数组吗？或者ArrayContains可能无法使用ArrayGet的结果？
JSON
{"epn":{"events":[{"name":"GupsyContextUpdate","createdDate":"Thu Sep 29 2016","attributes":[{"name":"entityId","type":"String","dimension":0},{"name":"entityType","type":"String","dimension":0,"description":"The cost of this event occurrence. Negative if this is an opportunity"},{"name":"SF","type":"Integer","dimension":0,"description":"Used in case the this event occur within an interval"},{"name":"occupied","type":"Integer","dimension":"0"},{"name":"framecounter","type":"Integer","dimension":"0"},{"name":"RSSI","type":"String","dimension":"0"},{"name":"hwversion","type":"String","dimension":"0"},{"name":"swversion","type":"String","dimension":"0"},{"name":"compassz","type":"String","dimension":"0"},{"name":"MACBS","type":"String","dimension":"0"},{"name":"SNR","type":"String","dimension":"0"},{"name":"devEUI","type":"String","dimension":"0"},{"name":"battery","type":"String","dimension":"0"},{"name":"devicetype","type":"String","dimension":"0"},{"name":"compassx","type":"String","dimension":"0"},{"name":"compassy","type":"String","dimension":"0"},{"name":"compasst","type":"String","dimension":"0"},{"name":"neighbours","type":"String","dimension":"1"},{"name":"timestamp","type":"String","dimension":"0"}]},{"name":"gupsyoutput","createdDate":"Thu Sep 29 2016","attributes":[{"name":"Certainty","type":"Double","defaultValue":"1","dimension":0,"description":"The certainty that this event happen (value between 0 to 1)"},{"name":"OccurrenceTime","type":"Date","dimension":0,"description":"No value means it equals the event detection time, other option is to use one of the defined distribution functions with parameters"},{"name":"ExpirationTime","type":"Date","dimension":0},{"name":"Cost","type":"Double","dimension":0,"description":"The cost of this event occurrence. Negative if this is an opportunity"},{"name":"Duration","type":"Double","defaultValue":"0","dimension":0,"description":"Used in case the this event occur within an interval"},{"name":"test","type":"String","dimension":"1"}]}],"epas":[{"name":"gupsyepa","createdDate":"Thu Sep 29 2016","epaType":"Aggregate","context":"gupsyct","inputEvents":[{"name":"GupsyContextUpdate","alias":"gupsyupdate","consumptionPolicy":"Consume","instanceSelectionPolicy":"First"}],"computedVariables":[{"name":"count","aggregationType":"Count","gupsyupdate":"ArrayContains(ArrayGet(gupsyupdate.neighbours,0),ArrayGet(gupsyupdate.id,ArraySize(gupsyupdate.id)-1))"}],"assertion":"count == true","evaluationPolicy":"Immediate","cardinalityPolicy":"Single","internalSegmentation":[],"derivedEvents":[{"name":"gupsyoutput","reportParticipants":false,"expressions":{"Duration":"0","test":"ArrayContains(ArrayGet(gupsyupdate.neighbours,0),ArrayGet(gupsyupdate.devEUI,ArraySize(gupsyupdate.devEUI)-1))"}}]}],"contexts":{"temporal":[{"name":"gupsyct","createdDate":"Thu Sep 29 2016","type":"TemporalInterval","atStartup":false,"neverEnding":false,"initiators":[{"initiatorType":"Event","initiatorPolicy":"Ignore","name":"GupsyContextUpdate"}],"terminators":[{"terminatorType":"RelativeTime","terminationType":"Terminate","relativeTime":"15000"}]}],"segmentation":[],"composite":[]},"consumers":[{"name":"gupsyconsumer","createdDate":"Thu Sep 29 2016","type":"Rest","properties":[{"name":"URL","value":"http://127.0.0.1/ProtonParser/TestEvent2Log.php"},{"name":"contentType","value":"application/xml"},{"name":"formatter","value":"xml"},{"name":"delimiter","value":";"},{"name":"tagDataSeparator","value":"="},{"name":"dateFormat","value":"dd/MM/yyyy-HH:mm:ss"}],"events":[{"name":"gupsyoutput"}]}],"producers":[],"name":"gupsy"}}
请添加标签“fiware-cep”。 – urishani