Module io.helidon.declarative.codegen

Package io.helidon.declarative.codegen.faulttolerance

Class FtExtensionProvider

java.lang.Object

io.helidon.declarative.codegen.faulttolerance.FtExtensionProvider

All Implemented Interfaces:

CodegenProvider, RegistryCodegenExtensionProvider

public class FtExtensionProvider
extends Object
implements RegistryCodegenExtensionProvider

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

Constructor Summary

Constructors

Constructor	Description
FtExtensionProvider()	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.
boolean	supportsFactoryProvidedServiceContractAnnotations()	Whether this extension should also process factory services whose provided service contracts contain annotations supported by this extension.
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, supportedMetaAnnotations, supportedOptions

Constructor Details

FtExtensionProvider

public FtExtensionProvider()

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)

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 contracts discovered for the service type. 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(). Factory-provided contracts are controlled separately by RegistryCodegenExtensionProvider.supportsFactoryProvidedServiceContractAnnotations().

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

supportsFactoryProvidedServiceContractAnnotations

public boolean supportsFactoryProvidedServiceContractAnnotations()

Description copied from interface: RegistryCodegenExtensionProvider

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

This method follows RegistryCodegenExtensionProvider.supportsServiceContractAnnotations() by default for backward compatibility.

Specified by:

supportsFactoryProvidedServiceContractAnnotations in interface RegistryCodegenExtensionProvider

Returns:

whether factory services with supported provided-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