I am currently trying to have null values for Enum, as per the OpenAPI specs, this is possible. I am trying to follow the steps as given here
https://swagger.io/docs/specification/data-models/enums/
my yaml implementation
openapi: 3.0.1
info:
title: Test
description: Test API
contact:
name: a
url: http://www.google.com
email: user@test.com
version: '1.0'
paths:
/v1/getItems:
summary: 'get items'
description: 'get items'
post:
summary: items get
operationId: getItems
x-grantTypeRequirement: 'client_credentials'
tags:
- items
responses:
200:
description: Success
components:
schemas:
Item:
title: Order Item
type: object
description: 'The order item.'
required:
- type
properties:
name:
type: string
type:
$ref: '#/components/schemas/ItemType'
ItemType:
description: 'The Type of the Item'
type: string
nullable: true
enum:
- "PHYSICAL"
- "DIGITAL"
- null
when I build and run mvn clean install with the changes nullable:true and enum: with value as null, as shown above I get the below exception
[DEBUG] debugging from property return: CodegenProperty{baseName='type', openApiType='ItemType', complexType='ItemType', getter='getType', setter='setType', description='null', datatype='ItemType', datatypeWithEnum='ItemType', dataFormat='null', name='type', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.type;', baseType='ItemType', containerType='null', title='null', unescapedDescription='null', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
"$ref" : "#/components/schemas/ItemType"
}', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, hasMore=false, required=false, secondaryParam=false, hasMoreNonReadOnly=false, isPrimitiveType=false, isModel=false, isContainer=false, isString=false, isNumeric=false, isInteger=false, isLong=false, isNumber=false, isFloat=false, isDouble=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=false, isUuid=false, isUri=false, isEmail=false, isFreeFormObject=false, isListContainer=false, isMapContainer=false, isEnum=false, isReadOnly=false, isWriteOnly=false, isNullable=true, isSelfReference=false, _enum=null, allowableValues={values=[PHYSICAL, DIGITAL, null]}, items=null, mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='Type', enumName='null', maxItems=null, minItems=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false}
[ERROR] unexpected error in Open-API generation
java.lang.RuntimeException: Could not process model 'Item'.Please make sure that your schema is correct!
at org.openapitools.codegen.DefaultGenerator.generateModels (DefaultGenerator.java:472)
at org.openapitools.codegen.DefaultGenerator.generate (DefaultGenerator.java:923)
at org.openapitools.codegen.plugin.CodeGenMojo.execute (CodeGenMojo.java:727)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at com.soebes.maven.plugins.iterator.IteratorMojo.executeMojo (IteratorMojo.java:406)
at com.soebes.maven.plugins.iterator.IteratorMojo.handlePluginExecution (IteratorMojo.java:305)
at com.soebes.maven.plugins.iterator.IteratorMojo.execute (IteratorMojo.java:235)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.NullPointerException
at org.openapitools.codegen.DefaultCodegen.updateCodegenPropertyEnum (DefaultCodegen.java:4304)
at org.openapitools.codegen.DefaultCodegen.postProcessModelsEnum (DefaultCodegen.java:385)
at org.openapitools.codegen.languages.SpringCodegen.postProcessModelsEnum (SpringCodegen.java:815)
at org.openapitools.codegen.languages.AbstractJavaCodegen.postProcessModels (AbstractJavaCodegen.java:999)
at org.openapitools.codegen.DefaultGenerator.processModels (DefaultGenerator.java:1233)
at org.openapitools.codegen.DefaultGenerator.generateModels (DefaultGenerator.java:467)
at org.openapitools.codegen.DefaultGenerator.generate (DefaultGenerator.java:923)
at org.openapitools.codegen.plugin.CodeGenMojo.execute (CodeGenMojo.java:727)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at com.soebes.maven.plugins.iterator.IteratorMojo.executeMojo (IteratorMojo.java:406)
at com.soebes.maven.plugins.iterator.IteratorMojo.handlePluginExecution (IteratorMojo.java:305)
at com.soebes.maven.plugins.iterator.IteratorMojo.execute (IteratorMojo.java:235)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR]
java.lang.RuntimeException: Could not process model 'Item'.Please make sure that your schema is correct!
at org.openapitools.codegen.DefaultGenerator.generateModels (DefaultGenerator.java:472)
at org.openapitools.codegen.DefaultGenerator.generate (DefaultGenerator.java:923)
at org.openapitools.codegen.plugin.CodeGenMojo.execute (CodeGenMojo.java:727)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at com.soebes.maven.plugins.iterator.IteratorMojo.executeMojo (IteratorMojo.java:406)
at com.soebes.maven.plugins.iterator.IteratorMojo.handlePluginExecution (IteratorMojo.java:305)
at com.soebes.maven.plugins.iterator.IteratorMojo.execute (IteratorMojo.java:235)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.NullPointerException
at org.openapitools.codegen.DefaultCodegen.updateCodegenPropertyEnum (DefaultCodegen.java:4304)
at org.openapitools.codegen.DefaultCodegen.postProcessModelsEnum (DefaultCodegen.java:385)
at org.openapitools.codegen.languages.SpringCodegen.postProcessModelsEnum (SpringCodegen.java:815)
at org.openapitools.codegen.languages.AbstractJavaCodegen.postProcessModels (AbstractJavaCodegen.java:999)
at org.openapitools.codegen.DefaultGenerator.processModels (DefaultGenerator.java:1233)
at org.openapitools.codegen.DefaultGenerator.generateModels (DefaultGenerator.java:467)
at org.openapitools.codegen.DefaultGenerator.generate (DefaultGenerator.java:923)
at org.openapitools.codegen.plugin.CodeGenMojo.execute (CodeGenMojo.java:727)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at com.soebes.maven.plugins.iterator.IteratorMojo.executeMojo (IteratorMojo.java:406)
at com.soebes.maven.plugins.iterator.IteratorMojo.handlePluginExecution (IteratorMojo.java:305)
at com.soebes.maven.plugins.iterator.IteratorMojo.execute (IteratorMojo.java:235)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
any thoughts on what could be causing this exception and what steps should I take to resolve/fix this issue?