Class MessageProcessor

java.lang.Object

javax.annotation.processing.AbstractProcessor

pt.unl.fct.di.novasys.babel2.channels.MessageProcessor

All Implemented Interfaces:

Processor

@SupportedAnnotationTypes("pt.unl.fct.di.novasys.babel2.channels.BabelIPMessage")
@SupportedSourceVersion(RELEASE_17)
@AutoService(Processor.class)
public class MessageProcessor
extends AbstractProcessor

Compile-time annotation processor that generates binary serializer classes for every Java record annotated with BabelIPMessage.

For each annotated type the processor introspects the record's component accessor methods and emits a new class <RecordName>Serializer in the pt.unl.fct.di.novasys.babel2.channels.serializers package. The generated class:

• implements BabelNetworkMessageSerializer;
• is annotated with @AutoService(BabelNetworkMessageSerializer.class) so that it is automatically registered in the SerializerRegistry via the Java ServiceLoader;
• supports the following component types: all Java primitives and their boxed equivalents, String, UUID, IPBabelNodeComponent, arrays, and parameterized Collection / Map implementations.

The processor runs at SourceVersion.RELEASE_17 and targets the annotation type pt.unl.fct.di.novasys.babel2.channels.BabelIPMessage. It uses JavaPoet to construct the source files that are written via the standard Filer.

A compile-time error is reported (via Diagnostic.Kind.ERROR) if:

• the annotated type is not a record;
• a collection or map component lacks generic type arguments;
• an unsupported type is encountered.

Field Summary

Fields inherited from class AbstractProcessor

processingEnv

Constructor Summary

Constructors

Constructor	Description
MessageProcessor()	Default public constructor invoked by the Java annotation processing framework.

Method Summary

Modifier and Type	Method	Description
void	init(ProcessingEnvironment processingEnv)
boolean	process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv)

Methods inherited from class AbstractProcessor

getCompletions, getSupportedAnnotationTypes, getSupportedOptions, getSupportedSourceVersion, isInitialized

Methods inherited from class Object

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

Constructor Details

MessageProcessor

public MessageProcessor()

Default public constructor invoked by the Java annotation processing framework.

Method Details

process

public boolean process(Set<? extends TypeElement> annotations,
 RoundEnvironment roundEnv)

Specified by:

process in interface Processor

Specified by:

process in class AbstractProcessor

init

public void init(ProcessingEnvironment processingEnv)

Specified by:

init in interface Processor

Overrides:

init in class AbstractProcessor