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Questions tagged [complex-event-processing]

Complex event processing (CEP) consists of processing many events happening across all the layers of an organization, identifying the most meaningful events within the event cloud, analyzing their impact, and taking subsequent action in real time.

Complex event processing refers to process states, the changes of state exceeding a defined threshold of level, time, or value increment or just of a count as the event. It requires the respective event monitoring, event reporting, event recording and event filtering. An event may be observed as a change of state with any physical or logical or otherwise discriminated condition of and in a technical or economical system, each state information with an attached time stamp defining the order of occurrence and a topology mark defining the location of occurrence.

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Can I load a list white with table event WSO2

I have a postgres blacklist table, I want to load this table and do a join using the event table of WSO2 DAS. but it does not allow me to use the blacklist eat from in the query. This is my code of sample: @From(eventtable='rdbms',…
ROBY HERNAN RUBIANO
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Fiware CEP Sending Output Events to the Context Broker with Fiware-Service and Fiware-ServicePath

I'm trying to send an event to a consumer, in order to modify one attribute on an entity of the Context Broker. The issue is, that I've got the entity that is going to receive the derivation event, under a Fiware-Service and Fiware-ServicePath. I…
XDIEZ
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Orion has issues running alongside Apache Tomcat 7

I've installed Orion 0.24 on a server, alongside with Apache Tomcat 7, where I deployed ProtonCEP GE (4x WAR files deployed). The issue is that Orion unswers only to half of the requests it gets (independent of request) in an alternate fashion, like…
A. Vieira
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Comprehensive CEP (Proton) REST API documentation

I've searched the repo + FiWare Wikis and was unable to find any detailed API documentation. I saw this: http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/Complex_Event_Processing_Open_RESTful_API_Specification I'm running a CEP…
joao figueiredo
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Approaches for scaling out StreamInsight?

I am considering using StreamInsight for an CEP system I'm working on, however the scale out story doesn't seem to exist in any of the documentation I could find online. StreamInsight seems to be designed to run on a single server. The size of the…
Paul Fryer
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wso2: cep: siddhi: how to make time windows persistent

we are currently testing siddhi wso2 cep. we need to be able to restart the wso2 server process without loosing data which has been accumulated in a window (for example time window). Is there a way to make time windows persistent so that the server…
ron
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CEP absence of events using siddhi

Good afternoon. I write as an architect SW Competence Centres into Company Indra (www.indra.com). In this area normally work with CEPs, open-source and commercial, in the open-source domain until now we've always used the Esper CEP, but we have…
user2750481
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How can I run WSO2-CEP or WSO2-BAM and WSO2-BPS at the same machine at the same time?

I am working on event processing and business activity monitoring in SOA. I want to run WSO2-CEP and/or WSO2-BAM while WSO2-BPS is running. But the problem is that when I run WSO2-BPS to run my business processes, I can't run WSO2-CEP and/or…
Saeed
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esper in custom rule engine

I need to implement a rule engine using ESPER For this I have to prepare query for rules (if there is any other optimized way, please suggest). Rules must be declarable as well as modifiable at run time.Also I will have to create a UI to define…
Chaturvedi Dewashish
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Starting with Esper + sockets

I'm a rookie with Esper and I would like to get some help. I've already managed to use Esper with CSV files, but now I need to use Java objects as events sent through a socket and I can't find simple examples on the Internet to use as a guide. Has…
user1712242
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sample code about esper engine

i wanted to begin learning ESPER engine, and i found out that ester native examples are a little complex. is there any one who has a good simple example java code, which is about using esper?
saman
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CEP Engine vs Expert System

What are the main differencees between a Complex Event Processing engine and an Expert System engine? When should I use one or another?
alessmar
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Can subscribing event processor and tracking event processor co exist?

Currently we are using Axon 2. We would like to upgrade Axon 2 to 4. We used Axon 2 subscribing event processor with replay options. In Axon 4, One significant difference is Tracking event processors. It seems,Tracking processors are must for…
user3022382
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Processing multiple patterns in Flink CEP in Parallel on One stream data

I have following use case. There is one machine which is sending event streams to Kafka which are being received by CEP engine where warnings are generated when conditions are satisfied on the Stream data. FlinkKafkaConsumer011 kafkaSource =…
vikram raju
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Apache Flink CEP pattern detection with java

I want to do; to start with CEP with any of the arraylist elements included in the map structure and to continue with the rest of the arraylist elements I have started. map and pattern structure: final Map< Integer,ArrayList> deger = new…
Taha ibişoglu
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