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folio-custom-fields

Copyright (C) 2019-2021 The Open Library Foundation

This software is distributed under the terms of the Apache License, Version 2.0. See the file "LICENSE" for more information.

Introduction

The FOLIO module to store and maintain custom fields. The folio-custom-fields is designed to be a library that any module can add and use to store custom fields definitions as well as their values.

The custom fields module implements a simple CRUD interface POST/PUT/GET/DELETE on /custom-fields and /custom-fields/$id endpoints. See the ramls/custom-fields.json for precise definitions.

Written in Java, using the raml-module-builder and uses Maven as its build system.

The general design of the custom fields is following

The module has a common interface which can be used by several modules. This feature called Multiple interfaces and helps OKAPI to dispatch the request to any number of modules with the same interface just use "interfaceType": "multiple" in the "Provides" section of the ModuleDescriptor.json file To define a particular module to be called to, declare X-Okapi-Module-Id header, detailed information is able via the link to Okapi documentation. The additional information about folio-custom-fields and sample request collection can be found in Confluence

Module Deployment

The custom fields functionality can be added to any module as a jar file. The target module needs to carry out the changes described below. Please note that indicated module version and ModuleDescriptor.json file serve informational purpose.

  1. Add maven dependency for folio-custom-fields in project pom file. Example:
<dependency>
  <groupId>org.folio</groupId>
  <artifactId>folio-custom-fields</artifactId>
  <version>1.4.1</version>
</dependency>

We recommend using the latest released version. The list of released versions is available via the link. 2. Modify the section scripts in schema.json file to include create_custom_fields_table.sql, which will created a table for storing module-specific custom fields and additional triggers. Example:

"scripts" : [
    {
      "run": "after",
      "snippetPath": "create_custom_fields_table.sql",
      "fromModuleVersion": "1.0"
    }
  ]
  1. Modify the ModuleDescriptor.json file by including the custom-fields interface Example:
{
  "id": "custom-fields",
  "version": "1.0",
  "interfaceType" : "multiple",
  "handlers": [
    {
      "methods": ["GET"],
      "pathPattern": "/custom-fields",
      "permissionsRequired": ["custom.fields.collection.get"]
    },
    {
      "methods": ["POST"],
      "pathPattern": "/custom-fields",
      "permissionsRequired": ["custom.fields.item.post"]
    },
    {
      "methods": ["GET"],
      "pathPattern": "/custom-fields/{id}",
      "permissionsRequired": ["custom.fields.item.get"]
    },
    {
      "methods": ["PUT"],
      "pathPattern": "/custom-fields/{id}",
      "permissionsRequired": ["custom.fields.item.put"]
    },
    {
      "methods": ["DELETE"],
      "pathPattern": "/custom-fields/{id}",
      "permissionsRequired": ["custom.fields.item.delete"]
    }
  ]
 }

The permission name inside of the permissionsRequired section can be modified to represent the module purpose. See mod-users as an example of folio-custom-fields integration.

Issue tracker

See project FCFIELDS at the FOLIO issue tracker.

Code analysis

SonarQube analysis.