Module io.helidon.declarative.codegen

Package io.helidon.declarative.codegen.validation

Class ValidationExtensionProvider

java.lang.Object

io.helidon.declarative.codegen.validation.ValidationExtensionProvider

All Implemented Interfaces:

CodegenProvider, RegistryCodegenExtensionProvider

public class ValidationExtensionProvider
extends Object
implements RegistryCodegenExtensionProvider

Java ServiceLoader provider implementation for RegistryCodegenExtensionProvider that generates required services to handle declarative validation.

Constructor Summary

Constructors

Constructor	Description
ValidationExtensionProvider()	Default constructor required by Java ServiceLoader.

Method Summary

Modifier and Type	Method	Description
RegistryCodegenExtension	create(RegistryCodegenContext codegenContext)	Create a new extension based on the context.
Set<TypeName>	supportedAnnotations()	Annotations that are supported.
Set<TypeName>	supportedMetaAnnotations()	Inherited annotations that are supported.
boolean	supportsServiceContractAnnotations()	Whether this extension should also process services whose service contracts contain annotations supported by this extension.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.helidon.codegen.spi.CodegenProvider

supportedAnnotationPackages, supportedOptions

Constructor Details

ValidationExtensionProvider

public ValidationExtensionProvider()

Default constructor required by Java ServiceLoader.

Method Details

supportedAnnotations

public Set<TypeName> supportedAnnotations()

Description copied from interface: CodegenProvider

Annotations that are supported.

Specified by:

supportedAnnotations in interface CodegenProvider

Returns:

set of annotation types

See Also:

• RoundContext.annotatedTypes(io.helidon.common.types.TypeName)
• RoundContext.annotatedElements(io.helidon.common.types.TypeName)

supportedMetaAnnotations

public Set<TypeName> supportedMetaAnnotations()

Description copied from interface: CodegenProvider

Inherited annotations that are supported. If an annotation is annotated with this "meta" annotation, it is considered supported.

Specified by:

supportedMetaAnnotations in interface CodegenProvider

Returns:

set of meta annotation types

See Also:

• RoundContext.annotatedAnnotations(io.helidon.common.types.TypeName)

supportsServiceContractAnnotations

public boolean supportsServiceContractAnnotations()

Description copied from interface: RegistryCodegenExtensionProvider

Whether this extension should also process services whose service contracts contain annotations supported by this extension.

Service contracts include direct service contracts and contracts provided by factory services. Contract annotations are discovered from nested contract metadata, including annotations on the contract type, methods, method parameters, parameter and return type arguments, and annotations matched through CodegenProvider.supportedMetaAnnotations().

Matching services are passed to the extension through RoundContext.types().

Contract annotations do not make the implementation itself appear from RoundContext.annotatedTypes(io.helidon.common.types.TypeName) unless the implementation also has that annotation directly or through normal annotation inheritance.

Specified by:

supportsServiceContractAnnotations in interface RegistryCodegenExtensionProvider

Returns:

whether services with supported service-contract annotations should be processed

create

public RegistryCodegenExtension create(RegistryCodegenContext codegenContext)

Description copied from interface: RegistryCodegenExtensionProvider

Create a new extension based on the context.

Specified by:

create in interface RegistryCodegenExtensionProvider

Parameters:

codegenContext - injection code generation context

Returns:

a new extension