io.micronaut.inject.BeanDefinition Java Examples

@Override
public @Nonnull
String[] getBeanNamesForType(Class<?> type, boolean includeNonSingletons, boolean allowEagerInit) {
    // ignore certain common cases
    if (type == null || Object.class == type || List.class == type || beanExcludes.contains(type)) {
        return StringUtils.EMPTY_STRING_ARRAY;
    }
    String[] names = beanNamesForTypeCache.get(type);
    if (names == null) {
        final String[] superResult = MicronautBeanFactory.super.getBeanNamesForType(type, includeNonSingletons, allowEagerInit);
        if (ArrayUtils.isNotEmpty(superResult)) {
            names = superResult;
        } else {
            final Collection<? extends BeanDefinition<?>> beanDefinitions = beanContext.getBeanDefinitions(type);
            names = beansToNames(beanDefinitions);
        }
        beanNamesForTypeCache.put(type, names);
    }
    return names;
}
 

private String computeBeanName(BeanDefinition<?> definition) {
    String name;
    if (definition instanceof NameResolver) {
        name = ((NameResolver) definition).resolveName().orElse(Primary.class.getSimpleName());
    } else {
        name = definition.getValue(Named.class, String.class).orElseGet(() ->
                definition.getAnnotationTypeByStereotype(Qualifier.class).map(Class::getSimpleName).orElse(definition.getClass().getSimpleName())
        );
    }
    return definition.getBeanType().getName() + "(" + name + ")";
}
 

@Override
protected boolean isPrimary(String beanName, Object beanInstance) {
    BeanDefinitionReference<?> reference = beanDefinitionMap.get(beanName);
    if (reference == null) {
        reference = beanDefinitionsByName.get(beanName);
    }

    if (reference != null) {
        final BeanDefinition<?> definition = reference.load(beanContext);
        return definition.hasDeclaredStereotype(Primary.class) || definition.getValue(Named.class, String.class).map((String n) -> Primary.class.getName().equals(n)).orElse(false);
    } else {
        return false;
    }
}
 

@Override
public void registerBeanDefinition(String beanName, org.springframework.beans.factory.config.BeanDefinition beanDefinition) throws BeanDefinitionStoreException {
    if (beanDefinition instanceof org.springframework.beans.factory.support.AbstractBeanDefinition) {
        org.springframework.beans.factory.support.AbstractBeanDefinition abstractBeanDefinition = (org.springframework.beans.factory.support.AbstractBeanDefinition) beanDefinition;
        final Supplier<?> instanceSupplier = abstractBeanDefinition.getInstanceSupplier();
        if (instanceSupplier != null) {
            registerSingleton(beanName, instanceSupplier.get());
        }
    }
}
 

@Override
public void destroyBean(String beanName, Object beanInstance) {
    final BeanDefinitionReference<?> reference = beanDefinitionMap.get(beanName);
    if (reference != null) {
        final BeanDefinition<?> ref = reference.load(beanContext);
        if (ref instanceof DisposableBeanDefinition) {
            ((DisposableBeanDefinition) ref).dispose(beanContext, beanInstance);
        }
    }
}
 

@Override
public org.springframework.beans.factory.config.BeanDefinition getBeanDefinition(String beanName) throws NoSuchBeanDefinitionException {
    final BeanDefinitionReference<?> reference = beanDefinitionMap.get(beanName);
    if (reference != null) {
        final BeanDefinition<?> def = reference.load(beanContext);
        if (def.isEnabled(beanContext)) {
            final GenericBeanDefinition genericBeanDefinition = new GenericBeanDefinition();
            genericBeanDefinition.setBeanClass(def.getBeanType());
            return genericBeanDefinition;
        }
    }
    throw new NoSuchBeanDefinitionException(beanName);
}
 

@Override
public @Nonnull
String[] getBeanNamesForAnnotation(@Nonnull Class<? extends Annotation> annotationType) {
    final String[] beanNamesForAnnotation = super.getBeanNamesForAnnotation(annotationType);
    final Collection<BeanDefinition<?>> beanDefinitions = beanContext.getBeanDefinitions(Qualifiers.byStereotype(annotationType));
    return ArrayUtils.concat(beansToNames(beanDefinitions), beanNamesForAnnotation);
}
 

@Override
protected UriRoute buildBeanRoute(String httpMethodName, HttpMethod httpMethod, String uri, BeanDefinition<?> beanDefinition, ExecutableMethod<?, ?> method) {
    String cp = contextPathProvider.getContextPath();
    if (cp != null) {
        uri = StringUtils.prependUri(cp, uri);
    }
    return super.buildBeanRoute(httpMethodName, httpMethod, uri, beanDefinition, method);
}
 

@Override
public <T> T get(
        BeanResolutionContext resolutionContext,
        BeanDefinition<T> beanDefinition,
        BeanIdentifier identifier,
        Provider<T> provider) {
    BeanResolutionContext.Segment segment = resolutionContext.getPath().currentSegment().orElseThrow(() ->
            new IllegalStateException("@GrpcChannel used in invalid location")
    );
    Argument argument = segment.getArgument();
    String value = argument.getAnnotationMetadata().getValue(GrpcChannel.class, String.class).orElse(null);
    if (StringUtils.isEmpty(value)) {
        throw new DependencyInjectionException(resolutionContext, argument, "No value specified to @GrpcChannel annotation");
    }
    if (!Channel.class.isAssignableFrom(argument.getType())) {
        throw new DependencyInjectionException(resolutionContext, argument, "@GrpcChannel used on type that is not a Channel");
    }

    if ("grpc-server".equalsIgnoreCase(value)) {
        return (T) applicationContext.getBean(ManagedChannel.class, Qualifiers.byName("grpc-server"));
    }

    if (!(provider instanceof ParametrizedProvider)) {
        throw new DependencyInjectionException(resolutionContext, argument, "GrpcChannelScope called with invalid bean provider");
    }
    value = applicationContext.resolveRequiredPlaceholders(value);
    String finalValue = value;
    return (T) channels.computeIfAbsent(new ChannelKey(identifier, value), channelKey ->
            (ManagedChannel) ((ParametrizedProvider<T>) provider).get(finalValue)
    );
}
 

public Registry(ApplicationContext applicationContext) {
    Collection<BeanDefinition<CommandHandler>> commandHandlers = applicationContext.getBeanDefinitions(CommandHandler.class);
    commandHandlers.forEach(x -> registerCommand(applicationContext, x));

    Collection<BeanDefinition<QueryHandler>> queryHandlers = applicationContext.getBeanDefinitions(QueryHandler.class);
    queryHandlers.forEach(x -> registerQuery(applicationContext, x));
}
 

/**
 * Default constructor.
 *
 * @param dataSourceName        The data source name
 * @param dataSource            The datasource
 * @param transactionOperations The JDBC operations for the data source
 * @param executorService       The executor service
 * @param beanContext           The bean context
 * @param codecs                The codecs
 * @param dateTimeProvider      The dateTimeProvider
 */
protected DefaultJdbcRepositoryOperations(@Parameter String dataSourceName,
                                          DataSource dataSource,
                                          @Parameter TransactionOperations<Connection> transactionOperations,
                                          @Named("io") @Nullable ExecutorService executorService,
                                          BeanContext beanContext,
                                          List<MediaTypeCodec> codecs,
                                          @NonNull DateTimeProvider dateTimeProvider) {
    super(
            new ColumnNameResultSetReader(),
            new ColumnIndexResultSetReader(),
            new JdbcQueryStatement(),
            codecs,
            dateTimeProvider
    );
    ArgumentUtils.requireNonNull("dataSource", dataSource);
    ArgumentUtils.requireNonNull("transactionOperations", transactionOperations);
    this.dataSource = dataSource;
    this.transactionOperations = transactionOperations;
    this.executorService = executorService;
    Collection<BeanDefinition<GenericRepository>> beanDefinitions = beanContext.getBeanDefinitions(GenericRepository.class, Qualifiers.byStereotype(Repository.class));
    for (BeanDefinition<GenericRepository> beanDefinition : beanDefinitions) {
        String targetDs = beanDefinition.stringValue(Repository.class).orElse("default");
        if (targetDs.equalsIgnoreCase(dataSourceName)) {
            Dialect dialect = beanDefinition.enumValue(JdbcRepository.class, "dialect", Dialect.class).orElseGet(() -> beanDefinition.enumValue(JdbcRepository.class, "dialectName", Dialect.class).orElse(Dialect.ANSI));
            dialects.put(beanDefinition.getBeanType(), dialect);
            QueryBuilder qb = queryBuilders.get(dialect);
            if (qb == null) {
                queryBuilders.put(dialect, new SqlQueryBuilder(dialect));
            }
        }
    }
}
 

@Override
public <T> T get(BeanResolutionContext resolutionContext, BeanDefinition<T> beanDefinition, BeanIdentifier identifier, Provider<T> provider) {
    BeanResolutionContext.Segment segment = resolutionContext.getPath().currentSegment().orElseThrow(() ->
            new IllegalStateException("@KafkaClient used in invalid location")
    );
    Argument argument = segment.getArgument();
    AnnotationValue<KafkaClient> annotation = argument.findAnnotation(KafkaClient.class)
                                                      .orElseThrow(() -> new DependencyInjectionException(resolutionContext, argument, "KafkaClientScope called for injection point that is not annotated with @KafkaClient"));
    if (!Producer.class.isAssignableFrom(argument.getType())) {
        throw new DependencyInjectionException(resolutionContext, argument, "@KafkaClient used on type that is not a " + Producer.class.getName());
    }
    if (!(provider instanceof ParametrizedProvider)) {
        throw new DependencyInjectionException(resolutionContext, argument, "KafkaClientScope called with invalid bean provider");
    }

    Optional<Argument<?>> k = argument.getTypeVariable("K");
    Optional<Argument<?>> v = argument.getTypeVariable("V");

    if (!k.isPresent() || !v.isPresent()) {
        throw new DependencyInjectionException(resolutionContext, argument, "@KafkaClient used on type missing generic argument values for Key and Value");

    }

    String id = annotation.getValue(String.class).orElse(null);
    Argument<?> keyArgument = k.get();
    Argument<?> valueArgument = v.get();
    return getKafkaProducer(id, keyArgument, valueArgument);
}
 

@Override
public <T> T get(
        BeanResolutionContext resolutionContext,
        BeanDefinition<T> beanDefinition,
        BeanIdentifier identifier,
        Provider<T> provider) {
    BeanResolutionContext.Segment segment = resolutionContext.getPath().currentSegment().orElseThrow(() ->
            new IllegalStateException("@GrpcChannel used in invalid location")
    );
    Argument argument = segment.getArgument();
    String value = argument.getAnnotationMetadata().getValue(GrpcChannel.class, String.class).orElse(null);
    if (StringUtils.isEmpty(value)) {
        throw new DependencyInjectionException(resolutionContext, argument, "No value specified to @GrpcChannel annotation");
    }
    if (!Channel.class.isAssignableFrom(argument.getType())) {
        throw new DependencyInjectionException(resolutionContext, argument, "@GrpcChannel used on type that is not a Channel");
    }

    if ("grpc-server".equalsIgnoreCase(value)) {
        return (T) applicationContext.getBean(ManagedChannel.class, Qualifiers.byName("grpc-server"));
    }

    if (!(provider instanceof ParametrizedProvider)) {
        throw new DependencyInjectionException(resolutionContext, argument, "GrpcChannelScope called with invalid bean provider");
    }
    value = applicationContext.resolveRequiredPlaceholders(value);
    String finalValue = value;
    return (T) channels.computeIfAbsent(new ChannelKey(identifier, value), channelKey ->
            (ManagedChannel) ((ParametrizedProvider<T>) provider).get(finalValue)
    );
}
 

private void registerQuery(ApplicationContext applicationContext, BeanDefinition<QueryHandler> bean) {
    Class<QueryHandler> handlerClass = bean.getBeanType();
    Class<?>[] generics = GenericTypeUtils.resolveInterfaceTypeArguments(handlerClass, QueryHandler.class);
    Class<? extends Query> queryType = (Class<? extends Query>) generics[1];
    queryProviderMap.put(queryType, new QueryProvider(applicationContext, handlerClass));
}
 

private void registerCommand(ApplicationContext applicationContext, BeanDefinition<CommandHandler> bean) {
    Class<CommandHandler> handlerClass = bean.getBeanType();
    Class<?>[] generics = GenericTypeUtils.resolveInterfaceTypeArguments(handlerClass, CommandHandler.class);
    Class<? extends Command> commandType = (Class<? extends Command>) generics[1];
    commandProviderMap.put(commandType, new CommandProvider(applicationContext, handlerClass));
}
 

@Override
public Class<?> getType(@Nonnull String beanName) throws NoSuchBeanDefinitionException {
    Optional<Class<?>> opt = beanTypeCache.get(beanName);
    //noinspection OptionalAssignedToNull
    if (opt == null) {
        final BeanDefinitionReference<?> definition = beanDefinitionMap.get(beanName);
        if (definition != null) {
            opt = Optional.of(definition.getBeanType());
        } else {

            beanName = transformedBeanName(beanName);
            // Check manually registered singletons.
            Object beanInstance = super.getSingleton(beanName, false);
            if (beanInstance != null && !beanInstance.getClass().getSimpleName().equals("NullBean")) {
                if (beanInstance instanceof FactoryBean && !BeanFactoryUtils.isFactoryDereference(beanName)) {
                    return getTypeForFactoryBean((FactoryBean<?>) beanInstance);
                } else {
                    return beanInstance.getClass();
                }
            }
            // No singleton instance found -> check bean definition.
            org.springframework.beans.factory.BeanFactory parentBeanFactory = getParentBeanFactory();
            if (parentBeanFactory != null && !containsBeanDefinition(beanName)) {
                // No bean definition found in this factory -> delegate to parent.
                return parentBeanFactory.getType(originalBeanName(beanName));
            }

            final org.springframework.beans.factory.config.BeanDefinition parentDef;
            try {
                parentDef = super.getBeanDefinition(beanName);
            } catch (NoSuchBeanDefinitionException e) {
                beanTypeCache.put(beanName, Optional.empty());
                return null;
            }
            if (parentDef instanceof RootBeanDefinition) {

                RootBeanDefinition mbd = (RootBeanDefinition) parentDef;

                // Check decorated bean definition, if any: We assume it'll be easier
                // to determine the decorated bean's type than the proxy's type.
                BeanDefinitionHolder dbd = mbd.getDecoratedDefinition();
                if (dbd != null && !BeanFactoryUtils.isFactoryDereference(beanName)) {
                    RootBeanDefinition tbd = super.getMergedBeanDefinition(dbd.getBeanName(), dbd.getBeanDefinition(), mbd);
                    Class<?> targetClass = predictBeanType(dbd.getBeanName(), tbd);
                    if (targetClass != null && !FactoryBean.class.isAssignableFrom(targetClass)) {
                        return targetClass;
                    }
                }

                Class<?> beanClass = predictBeanType(beanName, mbd);

                // Check bean class whether we're dealing with a FactoryBean.
                if (beanClass != null && FactoryBean.class.isAssignableFrom(beanClass)) {
                    if (!BeanFactoryUtils.isFactoryDereference(beanName)) {
                        // If it's a FactoryBean, we want to look at what it creates, not at the factory class.
                        return super.getTypeForFactoryBean(beanName, mbd);
                    } else {
                        return beanClass;
                    }
                } else {
                    return (!BeanFactoryUtils.isFactoryDereference(beanName) ? beanClass : null);
                }
            }
        }
        beanTypeCache.put(beanName, opt);
    }

    return opt.orElse(null);
}
 

@Override
public boolean matches(ConditionContext context) {
    if (context.getComponent() instanceof BeanDefinition) {
        BeanDefinition<?> definition = (BeanDefinition<?>) context.getComponent();
        final BeanContext beanContext = context.getBeanContext();
        final Optional<Class<?>> declaringType = definition.getDeclaringType();

        if (beanContext instanceof ApplicationContext) {
            ApplicationContext applicationContext = (ApplicationContext) beanContext;
            final Class activeSpecClazz = applicationContext.get(ACTIVE_SPEC_CLAZZ, Class.class).orElse(null);
            final String activeSpecName = Optional.ofNullable(activeSpecClazz).map(clazz -> clazz.getPackage().getName() + "." + clazz.getSimpleName()).orElse(null);
            if (definition.isAnnotationPresent(MockBean.class) && declaringType.isPresent()) {
                final Class<?> declaringTypeClass = declaringType.get();
                String declaringTypeName = declaringTypeClass.getName();
                if (activeSpecClazz != null) {
                    if (definition.isProxy()) {
                        final String packageName = NameUtils.getPackageName(activeSpecName);
                        final String simpleName = NameUtils.getSimpleName(activeSpecName);
                        final String rootName = packageName + ".$" + simpleName;
                        return declaringTypeClass.isAssignableFrom(activeSpecClazz) || declaringTypeName.equals(rootName) || declaringTypeName.startsWith(rootName + "$");
                    } else {
                        return declaringTypeClass.isAssignableFrom(activeSpecClazz) || activeSpecName.equals(declaringTypeName) || declaringTypeName.startsWith(activeSpecName + "$");
                    }
                } else {
                    context.fail(
                            "@MockBean of type " + definition.getBeanType() + " not within scope of parent test."
                    );
                    return false;
                }
            } else {
                if (activeSpecName != null) {
                    boolean beanTypeMatches = activeSpecName.equals(definition.getBeanType().getName());
                    return beanTypeMatches || (declaringType.isPresent() && activeSpecClazz == declaringType.get());
                } else {
                    return false;
                }
            }
        } else {
            return false;
        }
    } else {
        return true;
    }
}
 

private String[] beansToNames(Collection<? extends BeanDefinition<?>> beanDefinitions) {
    return beanDefinitions.stream()
            .filter(bd -> !(bd instanceof ParametrizedBeanFactory))
            .map(this::computeBeanName).toArray(String[]::new);
}
 

@SuppressWarnings("unchecked")
@Override
protected <T> T doGetBean(String name, Class<T> requiredType, Object[] args, boolean typeCheckOnly) throws BeansException {

    if (beanExcludes.contains(requiredType)) {
        throw new NoSuchBeanDefinitionException(name);
    }

    if (super.containsSingleton(name)) {
        final Object o = super.getSingleton(name);
        if (requiredType == null || requiredType.isInstance(o)) {
            return (T) o;
        }
    }

    BeanDefinitionReference<?> reference = beanDefinitionMap.get(name);
    if (reference == null) {
        // by name, with no type lookups
        final BeanDefinitionReference<?> ref = beanDefinitionsByName.get(name);
        if (ref != null) {
            if (requiredType != null) {
                if (requiredType.isAssignableFrom(ref.getBeanType())) {
                    reference = ref;
                }
            } else {
                reference = ref;
            }
        }
    }

    if (reference != null) {
        final BeanDefinition<?> definition = reference.load(beanContext);
        if (definition.isEnabled(beanContext)) {
            if (requiredType == null) {
                requiredType = (Class<T>) definition.getBeanType();
            }

            io.micronaut.context.Qualifier<T> q = (io.micronaut.context.Qualifier<T>) definition.getValue(Named.class, String.class)
                    .map((String n) -> {
                        if (Primary.class.getName().equals(n)) {
                            return n;
                        }
                        return Qualifiers.byName(n);
                    })
                    .orElseGet(() -> {
                                if (definition.hasDeclaredStereotype(Primary.class)) {
                                    return null;
                                }
                                final Class annotationType = definition.getAnnotationTypeByStereotype(Qualifier.class).orElse(null);
                                if (annotationType != null) {
                                    return Qualifiers.byAnnotation(definition, annotationType);
                                }
                                return null;
                            }
                    );
            if (q != null) {
                return beanContext.getBean(requiredType, q);
            } else {
                return beanContext.getBean(requiredType);
            }
        }
    }

    if (requiredType != null) {
        try {
            return beanContext.getBean(requiredType, Qualifiers.byName(name));
        } catch (NoSuchBeanException e) {
            throw new NoSuchBeanDefinitionException(name);
        }
    } else {
        throw new NoSuchBeanDefinitionException(name);
    }
}
 

@Override
public boolean matches(ConditionContext context) {
    final AnnotationMetadataProvider component = context.getComponent();
    if (component instanceof BeanDefinition) {
        BeanDefinition<?> definition = (BeanDefinition<?>) component;
        final BeanContext beanContext = context.getBeanContext();
        if (beanContext instanceof ApplicationContext) {

            final Optional<String> name = definition instanceof NameResolver ? ((NameResolver) definition).resolveName() : Optional.empty();
            final Qualifier<JpaConfiguration> q = Qualifiers.byName(name.orElse("default"));
            final Optional<JpaConfiguration> jpaConfiguration = beanContext.findBean(JpaConfiguration.class, q);
            JpaConfiguration.EntityScanConfiguration entityScanConfig = jpaConfiguration.map(JpaConfiguration::getEntityScanConfiguration).orElse(null);

            if (entityScanConfig == null) {
                return false;
            }

            boolean isClasspathScanEnabled = entityScanConfig.isClasspath();
            String[] packagesToScan = entityScanConfig.getPackages();
            boolean hasEntitiesOnClassPath = false;
            boolean hasIntrospections = false;
            if (isClasspathScanEnabled) {
                final Environment environment = ((ApplicationContext) beanContext).getEnvironment();
                if (ArrayUtils.isNotEmpty(packagesToScan)) {
                    hasEntitiesOnClassPath = environment.scan(Entity.class, packagesToScan).findAny().isPresent();
                } else {
                    hasEntitiesOnClassPath = environment.scan(Entity.class).findAny().isPresent();
                }
            } else {
                if (ArrayUtils.isNotEmpty(packagesToScan)) {
                    hasIntrospections = !BeanIntrospector.SHARED
                            .findIntrospections(Entity.class, packagesToScan).isEmpty();
                } else {
                    hasIntrospections = !BeanIntrospector.SHARED
                            .findIntrospections(Entity.class).isEmpty();
                }
            }

            return hasEntitiesOnClassPath || hasIntrospections;
        }
    }
    return true;
}