How to access entity properties?

[Geraint Brown]

I'm really interested in exploring how I could use this to store and retrieve project-specific information.  For instance, I'd like to set maximum capital purchase value, to determine whether a 'purchase' needs authorisation or not, within workflows. 

Any pointers would be most welcome.

Many thanks,

Gez

[Yves Martin]

Project entity properties are documented at https://developer.atlassian.com/server/jira/platform/entity-properties/

with its REST API you can find with "Atlassian REST Browser" plugin at: /rest/api/2/project/{projectIdOrKey}/properties

For add-on development, even if its storage is JSON text in table "entity_property", it seems to be designed for both JavaScript support and plugin usage thanks to ProjectPropertyService: https://docs.atlassian.com/software/jira/docs/api/7.11.0/com/atlassian/jira/bc/project/property/ProjectPropertyService.html

A specific add-on has been designed to ease management: https://bitbucket.org/robertmassaioli/ep-tool

Related question mentioning another dedicated add-on "Project Properties": https://community.atlassian.com/t5/Jira-questions/Where-to-store-project-specific-configuration-element/qaq-p/858814