{title:'Models', updated:'9.0.0'}

The {@link oaj.jsonschema.JsonSchemaGenerator.Builder#useBeanDefs()} setting can be used to reduce the size of your generated Swagger JSON files by creating model definitions for beans and referencing those definitions through $ref attributes.

This setting is disabled by default, but can be set on the {@link oajr.RestContext.Builder} object:

| @HookEvent(INIT) | public void init(RestContext.Builder builder) { | builder.jsonSchemaGenerator().useBeanDefs(); | }

In the Swagger UI, this causes bean definitions to show up in the Models section at the bottom of the page:

##### Models section

##### Models section with Order bean expanded

In the generated Swagger JSON, embedded schema information for beans will be replaced with references such as the one shown below for the Order bean:

| { | "swagger": "2.0", | "paths": { | "/store/order": { | "get": { | "operationId": "getOrders", | "summary": "Petstore orders", | "responses": { | "200": { | "description": "OK", | "schema": { | "description": "java.util.Collection<org.apache.juneau.examples.rest.petstore.Order>", | "type": "array", | "items": { | "$ref": "#/definitions/Order" | } | }, | ... | ... | ... | ... | ... | }, | "definitions": { | "Order": { | "type": "object", | "properties": { | "id": { | "type": "integer", | "format": "int64" | }, | "petId": { | "type": "integer", | "format": "int64" | }, | "shipDate": { | "type": "string" | }, | "status": { | "type": "string", | "enum": [ | "PLACED", | "APPROVED", | "DELIVERED" | ] | } | }, | "description": "org.apache.juneau.examples.rest.petstore.Order", | "example": { | "id": 123, | "petId": 456, | "shipDate": "2012-12-21", | "status": "APPROVED" | } | }, | ... | }

Note that this does not affect how the information is rendered for that bean in the Swagger UI: