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java-helidon-server.md

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title
Documentation for the java-helidon-server Generator

METADATA

Property Value Notes
generator name java-helidon-server pass this to the generate command after -g
generator stability BETA
generator type SERVER
generator language Java
generator default templating engine mustache
helpTxt Generates a Java Helidon Server application.

CONFIG OPTIONS

These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to configuration docs for more details.

Option Description Values Default
additionalEnumTypeAnnotations Additional annotations for enum type(class level annotations) null
additionalModelTypeAnnotations Additional annotations for model type(class level annotations). List separated by semicolon(;) or new line (Linux or Windows) null
additionalOneOfTypeAnnotations Additional annotations for oneOf interfaces(class level annotations). List separated by semicolon(;) or new line (Linux or Windows) null
allowUnicodeIdentifiers boolean, toggles whether unicode identifiers are allowed in names or not, default is false false
apiPackage package for generated api classes org.openapitools.server.api
artifactDescription artifact description in generated pom.xml OpenAPI Java
artifactId artifactId in generated pom.xml. This also becomes part of the generated library's filename openapi-java-server
artifactUrl artifact URL in generated pom.xml https://github.com/openapitools/openapi-generator
artifactVersion artifact version in generated pom.xml. This also becomes part of the generated library's filename. If not provided, uses the version from the OpenAPI specification file. If that's also not present, uses the default value of the artifactVersion option. 1.0.0
bigDecimalAsString Treat BigDecimal values as Strings to avoid precision loss. false
booleanGetterPrefix Set booleanGetterPrefix get
camelCaseDollarSign Fix camelCase when starting with $ sign. when true : $Value when false : $value false
containerDefaultToNull Set containers (array, set, map) default to null false
dateLibrary Option. Date library to use
joda
Joda (for legacy app only)
legacy
Legacy java.util.Date
java8-localdatetime
Java 8 using LocalDateTime (for legacy app only)
java8
Java 8 native JSR310 (preferred for jdk 1.8+)
java8
disallowAdditionalPropertiesIfNotPresent If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.
false
The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.
true
Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.
true
discriminatorCaseSensitive Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client true
ensureUniqueParams Whether to ensure parameter names are unique in an operation (rename parameters that are not). true
enumUnknownDefaultCase If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.
false
No changes to the enum's are made, this is the default option.
true
With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.
false
fullProject If set to true, it will generate all files; if set to false, it will only generate API files. If unspecified, the behavior depends on whether a project exists or not: if it does not, same as true; if it does, same as false. Note that test files are never overwritten.
generateBuilders Whether to generate builders for models false
generateConstructorWithAllArgs whether to generate a constructor for all arguments false
gradleProject Whether to generate gradle project instead of maven. false
groupId groupId in generated pom.xml org.openapitools
helidonVersion Helidon complete version identifier or major version number. The specified exact Helidon release or, if specified as a major version the latest release of that major version, is used in the generated code. Highest released version.
hideGenerationTimestamp Hides the generation timestamp when files are generated. false
ignoreAnyOfInEnum Ignore anyOf keyword in enum false
implicitHeaders Skip header parameters in the generated API methods using @ApiImplicitParams annotation. false
implicitHeadersRegex Skip header parameters that matches given regex in the generated API methods using @ApiImplicitParams annotation. Note: this parameter is ignored when implicitHeaders=true null
invokerPackage root package for generated code org.openapitools.server
legacyDiscriminatorBehavior Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C# have this enabled by default).
true
The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.
false
The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.
true
library library template (sub-template) to use
mp
Helidon MP Server
se
Helidon SE Server
se
licenseName The name of the license Unlicense
licenseUrl The URL of the license http://unlicense.org
modelPackage package for generated models org.openapitools.server.model
openApiNullable Enable OpenAPI Jackson Nullable library true
performBeanValidation Perform BeanValidation false
prependFormOrBodyParameters Add form or body parameters to the beginning of the parameter list. false
rootJavaEEPackage Root package name for Java EE Helidon 2.x and earlier: javax; Helidon 3.x and later: jakarta
serializableModel boolean - toggle "implements Serializable" for generated models false
serializationLibrary Serialization library, defaults to Jackson
jsonb
Use JSON-B as serialization library
jackson
Use Jackson as serialization library
null
snapshotVersion Uses a SNAPSHOT version.
true
Use a SnapShot Version
false
Use a Release Version
null
sortModelPropertiesByRequiredFlag Sort model properties to place required parameters before optional parameters. true
sortParamsByRequiredFlag Sort method arguments to place required parameters before optional parameters. true
sourceFolder source folder for generated code src/main/java
testOutput Set output folder for models and APIs tests ${project.build.directory}/generated-test-sources/openapi
useAbstractClass Whether to generate abstract classes for REST API instead of interfaces. false
useBeanValidation Use Bean Validation false
useJakartaEe whether to use Jakarta EE namespace instead of javax false
useOneOfInterfaces whether to use a java interface to describe a set of oneOf options, where each option is a class that implements the interface false
withXml whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML) false
x-helidon-groupBy Selects how to group operations into APIs
tags
Use the 'tags' settings on each operation
first-path-segment
Use the first segment of the path
tags
x-helidon-useOptional Wrap optional parameters in an Optional (Helidon 4 and later) true

SUPPORTED VENDOR EXTENSIONS

Extension name Description Applicable for Default value
x-discriminator-value Used with model inheritance to specify value for discriminator that identifies current model MODEL
x-implements Ability to specify interfaces that model must implements MODEL empty array
x-setter-extra-annotation Custom annotation that can be specified over java setter for specific field FIELD When field is array & uniqueItems, then this extension is used to add @JsonDeserialize(as = LinkedHashSet.class) over setter, otherwise no value
x-tags Specify multiple swagger tags for operation OPERATION null
x-accepts Specify custom value for 'Accept' header for operation OPERATION null
x-content-type Specify custom value for 'Content-Type' header for operation OPERATION null
x-class-extra-annotation List of custom annotations to be added to model MODEL null
x-field-extra-annotation List of custom annotations to be added to property FIELD, OPERATION_PARAMETER null

IMPORT MAPPING

Type/Alias Imports
Array java.util.List
ArrayList java.util.ArrayList
BigDecimal java.math.BigDecimal
Date java.util.Date
DateTime org.joda.time.*
File java.io.File
HashMap java.util.HashMap
LinkedHashSet java.util.LinkedHashSet
List java.util.*
LocalDate org.joda.time.*
LocalDateTime org.joda.time.*
LocalTime org.joda.time.*
Map java.util.Map
Set java.util.*
Timestamp java.sql.Timestamp
URI java.net.URI
UUID java.util.UUID

INSTANTIATION TYPES

Type/Alias Instantiated By
array ArrayList
map HashMap
set LinkedHashSet

LANGUAGE PRIMITIVES

  • Boolean
  • Double
  • Float
  • Integer
  • Long
  • Object
  • String
  • boolean
  • byte[]

RESERVED WORDS

  • _
  • abstract
  • apiclient
  • apiexception
  • apiresponse
  • assert
  • boolean
  • break
  • byte
  • case
  • catch
  • char
  • class
  • configuration
  • const
  • continue
  • default
  • do
  • double
  • else
  • enum
  • extends
  • file
  • final
  • finally
  • float
  • for
  • goto
  • if
  • implements
  • import
  • instanceof
  • int
  • interface
  • list
  • localdate
  • localreturntype
  • localtime
  • localvaraccept
  • localvaraccepts
  • localvarauthnames
  • localvarcollectionqueryparams
  • localvarcontenttype
  • localvarcontenttypes
  • localvarcookieparams
  • localvarformparams
  • localvarheaderparams
  • localvarpath
  • localvarpostbody
  • localvarqueryparams
  • long
  • native
  • new
  • null
  • object
  • offsetdatetime
  • package
  • private
  • protected
  • public
  • return
  • short
  • static
  • strictfp
  • stringutil
  • super
  • switch
  • synchronized
  • this
  • throw
  • throws
  • transient
  • try
  • void
  • volatile
  • while

FEATURE SET

Client Modification Feature

Name Supported Defined By
BasePath ToolingExtension
Authorizations ToolingExtension
UserAgent ToolingExtension
MockServer ToolingExtension

Data Type Feature

Name Supported Defined By
Custom OAS2,OAS3
Int32 OAS2,OAS3
Int64 OAS2,OAS3
Float OAS2,OAS3
Double OAS2,OAS3
Decimal ToolingExtension
String OAS2,OAS3
Byte OAS2,OAS3
Binary OAS2,OAS3
Boolean OAS2,OAS3
Date OAS2,OAS3
DateTime OAS2,OAS3
Password OAS2,OAS3
File OAS2
Uuid
Array OAS2,OAS3
Null OAS3
AnyType OAS2,OAS3
Object OAS2,OAS3
Maps ToolingExtension
CollectionFormat OAS2
CollectionFormatMulti OAS2
Enum OAS2,OAS3
ArrayOfEnum ToolingExtension
ArrayOfModel ToolingExtension
ArrayOfCollectionOfPrimitives ToolingExtension
ArrayOfCollectionOfModel ToolingExtension
ArrayOfCollectionOfEnum ToolingExtension
MapOfEnum ToolingExtension
MapOfModel ToolingExtension
MapOfCollectionOfPrimitives ToolingExtension
MapOfCollectionOfModel ToolingExtension
MapOfCollectionOfEnum ToolingExtension

Documentation Feature

Name Supported Defined By
Readme ToolingExtension
Model ToolingExtension
Api ToolingExtension

Global Feature

Name Supported Defined By
Host OAS2,OAS3
BasePath OAS2,OAS3
Info OAS2,OAS3
Schemes OAS2,OAS3
PartialSchemes OAS2,OAS3
Consumes OAS2
Produces OAS2
ExternalDocumentation OAS2,OAS3
Examples OAS2,OAS3
XMLStructureDefinitions OAS2,OAS3
MultiServer OAS3
ParameterizedServer OAS3
ParameterStyling OAS3
Callbacks OAS3
LinkObjects OAS3

Parameter Feature

Name Supported Defined By
Path OAS2,OAS3
Query OAS2,OAS3
Header OAS2,OAS3
Body OAS2
FormUnencoded OAS2
FormMultipart OAS2
Cookie OAS3

Schema Support Feature

Name Supported Defined By
Simple OAS2,OAS3
Composite OAS2,OAS3
Polymorphism OAS2,OAS3
Union OAS3
allOf OAS2,OAS3
anyOf OAS3
oneOf OAS3
not OAS3

Security Feature

Name Supported Defined By
BasicAuth OAS2,OAS3
ApiKey OAS2,OAS3
OpenIDConnect OAS3
BearerToken OAS3
OAuth2_Implicit OAS2,OAS3
OAuth2_Password OAS2,OAS3
OAuth2_ClientCredentials OAS2,OAS3
OAuth2_AuthorizationCode OAS2,OAS3
SignatureAuth OAS3
AWSV4Signature ToolingExtension

Wire Format Feature

Name Supported Defined By
JSON OAS2,OAS3
XML OAS2,OAS3
PROTOBUF ToolingExtension
Custom OAS2,OAS3