How to merge the Numerical Filter and Trend components

["Iorio, Michele" <mi...@gft.com>]

Hi,
I am trying to implement a component with the numeric filter functionality and then perform the Trend on the filtered value.
I can't figure out where to put the numeric filter operation, in the Trend component, since there is no onEvent method.
Can you help me?

Also I would like to ask you, if it is possible to have an explanation of how the Trend works.

Thank you
Michele Iorio

Michele Iorio
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RE: How to merge the Numerical Filter and Trend components

[Dominik Riemer <ri...@fzi.de>]

Hi Michele,
the Trend component uses the Siddhi wrapper. This wrapper generates Siddhi EPL [1] to detect an increase/decrease over a certain time. We provide some convenience functions to generate the EPL (see the processors in the streampipes-processors-siddhi module).
There is also an example for a numerical filter which might be helpful in case you want to merge these two features into a single component.

Best,
Dominik


From: Iorio, Michele <mi...@gft.com>
Sent: Thursday, April 7, 2022 3:45 PM
To: users@streampipes.apache.org
Subject: How to merge the Numerical Filter and Trend components

Hi,
I am trying to implement a component with the numeric filter functionality and then perform the Trend on the filtered value.
I can't figure out where to put the numeric filter operation, in the Trend component, since there is no onEvent method.
Can you help me?

Also I would like to ask you, if it is possible to have an explanation of how the Trend works.

Thank you
Michele Iorio

Michele Iorio
_________________________________________________________________

GFT Italia S.r.l.
Via A. Rimassa, 51/2
16129 Genova, Italy

T +39 010 583158
F      +39 010 8680479
michele.iorio@gft.com<ma...@gft.com>
www.gft.com/it<http://www.gft.com/it>
https://blog.gft.com
https://www.linkedin.com/company/gft-group/
www.twitter.com/gft_it <http://www.twitter.com/gft_it%20>

[cid:image001.png@01D84B6C.E024AA00]<https://www.gft.com/it/it/index/societa/stampa/press-releases/2021/sostenibilita-e-innovazione-sociale--gft-lancia-il-greencoding-e-in-italia-act-for-the-future/>

Registered office: GFT Italia S.r.l., Via Sile 18, 20139 Milan (Italy)
VAT Code and number of registration with the Companies' Register of Milan: 00819200478
Corporate capital: Euro 1,000,000 fully paid-in

Company subject to the direction and coordination activity of GFT Technologies SE

Ai sensi del Regolamento UE 2016/679 (GDPR) e delle Linee Guida per posta elettronica ed Internet del Garante Privacy si rende noto che le informazioni contenute nella presente comunicazione e i relativi allegati possono essere riservate e sono, comunque, destinate esclusivamente alle persone o alla Società sopraindicati. Le stesse non sono da considerarsi comunicazioni personali, quindi eventuali risposte potranno essere conosciute da persone appartenenti all'azienda.

In accordance with Regulation EU 2016/679 (General Data Protection Regulation) and Guidelines Applying to the Use of E-Mails and the Internet in the Employment Context of Italian Data Protection Authority it is announced that the information in this communication (which includes any documents with it) is confidential and meant only for above-mentioned persons and/or Companies; the information is not personal therefore, It is intended for the addressee only and any replies will be known by people belonging to the company.
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