Server side functions

[Diaa ElKott]

Hello, everyone:

I was wondering if someone could share with me a tutorial on how to create server-side functions in OrientDB. The lecture on this topic in the Getting Started OrientDB course assumes a pre-existing function "createPerson()" within the example databases, and builds on it. Unfortunately, this code does not actually exist in the sample databases.

Thanks in advance for your help, and have a nice day.

Diaa

[Luigi Dell'Aquila]

Hi Diaa,

if you are implementing your functions in Javascript you can refer to this

http://orientdb.com/docs/last/Functions.html

To implement functions in Java, instead, you have to implement OSQLFunction interface and register functions in the database using db.getMetadata().getFunctionLibrary(). You can see this as an example

https://github.com/orientechnologies/orientdb/blob/07efb413a606a692ce99bcf1c11c9868ce5e3248/core/src/main/java/com/orientechnologies/orient/core/sql/functions/math/OSQLFunctionSum.java

Hope it helps

Luigi

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[Diaa ElKott]

Hi, Luigi:

Thanks a lot for your respose; this is most helpful, and I really appreciate it.

Have a great day.

Diaa