io.micronaut.context.exceptions.ConfigurationException: No backing RepositoryOperations configured for repository. Check your configuration and try again

[guptabw]

This is the first time that I am developing a microservice using micronaut and it looked good with min runtime to bring up a service. Then I added JPA support to communicate with Postgres DB and I started to get the below issue when I am trying to query the DB
[default-nioEventLoopGroup-1-3] ERROR io.micronaut.http.server.RouteExecutor - Unexpected error occurred: No backing RepositoryOperations configured for repository. Check your configuration and try again
io.micronaut.context.exceptions.ConfigurationException: No backing RepositoryOperations configured for repository. Check your configuration and try again
at io.micronaut.data.intercept.DataIntroductionAdvice.findInterceptor(DataIntroductionAdvice.java:167)
at io.micronaut.data.intercept.DataIntroductionAdvice.intercept(DataIntroductionAdvice.java:86)
at io.micronaut.aop.chain.MethodInterceptorChain.proceed(MethodInterceptorChain.java:137)
at io.micronaut.validation.ValidatingInterceptor.intercept(ValidatingInterceptor.java:138)
at io.micronaut.aop.chain.MethodInterceptorChain.proceed(MethodInterceptorChain.java:137)
at com.team.iot.device.provision.repo.DeviceInfoRepo$Intercepted.findByBluetoothMacAddressAndWifiMacAddress(Unknown Source)
at com.team.iot.device.provision.service.DeviceProvisioningService.identifyDevice(DeviceProvisioningService.java:49)
at com.team.iot.device.provision.controller.DeviceIdentificationController.identifyDevice(DeviceIdentificationController.java:36)
at com.team.iot.device.provision.controller.$DeviceIdentificationController$Definition$Exec.dispatch(Unknown Source)
at io.micronaut.context.AbstractExecutableMethodsDefinition$DispatchedExecutableMethod.invoke(AbstractExecutableMethodsDefinition.java:351)
at io.micronaut.context.DefaultBeanContext$4.invoke(DefaultBeanContext.java:584)
at io.micronaut.web.router.AbstractRouteMatch.execute(AbstractRouteMatch.java:303)
at io.micronaut.web.router.RouteMatch.execute(RouteMatch.java:111)
at io.micronaut.http.context.ServerRequestContext.with(ServerRequestContext.java:103)
at io.micronaut.http.server.RouteExecutor.lambda$executeRoute$14(RouteExecutor.java:636)
at reactor.core.publisher.FluxDeferContextual.subscribe(FluxDeferContextual.java:49)
at reactor.core.publisher.Flux.subscribe(Flux.java:8402)
at reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:426)
at io.micronaut.reactive.reactor.instrument.ReactorSubscriber.onNext(ReactorSubscriber.java:57)
at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:160)
at io.micronaut.http.server.netty.RoutingInBoundHandler$4.doOnComplete(RoutingInBoundHandler.java:875)
at io.micronaut.core.async.subscriber.CompletionAwareSubscriber.onComplete(CompletionAwareSubscriber.java:71)
at io.micronaut.http.server.netty.jackson.JsonContentProcessor$1.doOnComplete(JsonContentProcessor.java:136)
at io.micronaut.core.async.subscriber.CompletionAwareSubscriber.onComplete(CompletionAwareSubscriber.java:71)
at java.base/java.util.Optional.ifPresent(Optional.java:183)
at io.micronaut.core.async.processor.SingleThreadedBufferingProcessor.doOnComplete(SingleThreadedBufferingProcessor.java:48)
at io.micronaut.jackson.core.parser.JacksonCoreProcessor.doOnComplete(JacksonCoreProcessor.java:94)
at io.micronaut.core.async.subscriber.SingleThreadedBufferingSubscriber.onComplete(SingleThreadedBufferingSubscriber.java:71)
at io.micronaut.http.server.netty.jackson.JsonContentProcessor.doOnComplete(JsonContentProcessor.java:161)
at io.micronaut.core.async.subscriber.CompletionAwareSubscriber.onComplete(CompletionAwareSubscriber.java:71)
at io.micronaut.http.netty.reactive.HandlerPublisher.complete(HandlerPublisher.java:416)
at io.micronaut.http.netty.reactive.HandlerPublisher.handlerRemoved(HandlerPublisher.java:403)
at io.netty.channel.AbstractChannelHandlerContext.callHandlerRemoved(AbstractChannelHandlerContext.java:946)
at io.netty.channel.DefaultChannelPipeline.callHandlerRemoved0(DefaultChannelPipeline.java:637)
at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:477)
at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:423)
at io.micronaut.http.netty.stream.HttpStreamsHandler.removeHandlerIfActive(HttpStreamsHandler.java:459)
at io.micronaut.http.netty.stream.HttpStreamsHandler.handleReadHttpContent(HttpStreamsHandler.java:306)
at io.micronaut.http.netty.stream.HttpStreamsHandler.channelRead(HttpStreamsHandler.java:269)
at io.micronaut.http.netty.stream.HttpStreamsServerHandler.channelRead(HttpStreamsServerHandler.java:123)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93)
at io.netty.handler.codec.http.HttpServerKeepAliveHandler.channelRead(HttpServerKeepAliveHandler.java:64)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.flow.FlowControlHandler.dequeue(FlowControlHandler.java:200)
at io.netty.handler.flow.FlowControlHandler.read(FlowControlHandler.java:139)
at io.netty.channel.AbstractChannelHandlerContext.invokeRead(AbstractChannelHandlerContext.java:686)
at io.netty.channel.AbstractChannelHandlerContext.read(AbstractChannelHandlerContext.java:671)
at io.micronaut.http.netty.reactive.HandlerPublisher.requestDemand(HandlerPublisher.java:163)
at io.micronaut.http.netty.stream.HttpStreamsHandler$2.requestDemand(HttpStreamsHandler.java:260)
at io.micronaut.http.netty.reactive.HandlerPublisher$ChannelSubscription.receivedDemand(HandlerPublisher.java:547)
at io.micronaut.http.netty.reactive.HandlerPublisher$ChannelSubscription.lambda$request$0(HandlerPublisher.java:474)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:497)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:834)

Below are the pom.xml
`

4.0.0
com.example
iot-device-provision
0.1
${packaging}

<parent>
	<groupId>io.micronaut</groupId>
	<artifactId>micronaut-parent</artifactId>
	<version>3.1.3</version>
</parent>

<properties>
	<packaging>jar</packaging>
	<jdk.version>1.8</jdk.version>
	<micronaut.version>3.1.3</micronaut.version>
	<exec.mainClass>com.team.iot.Application</exec.mainClass>
	<micronaut.runtime>netty</micronaut.runtime>
</properties>

<repositories>
	<repository>
		<id>central</id>
		<url>https://repo.maven.apache.org/maven2</url>
	</repository>
</repositories>

<dependencyManagement>
	<dependencies>
		<dependency>
			<groupId>software.amazon.awssdk</groupId>
			<artifactId>bom</artifactId>
			<version>2.16.60</version>
			<type>pom</type>
			<scope>import</scope>
		</dependency>
	</dependencies>
</dependencyManagement>

<dependencies>
	<dependency>
		<groupId>io.micronaut</groupId>
		<artifactId>micronaut-inject</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut</groupId>
		<artifactId>micronaut-validation</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>org.junit.jupiter</groupId>
		<artifactId>junit-jupiter-api</artifactId>
		<scope>test</scope>
	</dependency>
	<dependency>
		<groupId>org.junit.jupiter</groupId>
		<artifactId>junit-jupiter-engine</artifactId>
		<scope>test</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut.test</groupId>
		<artifactId>micronaut-test-junit5</artifactId>
		<scope>test</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut</groupId>
		<artifactId>micronaut-http-client</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut.data</groupId>
		<artifactId>micronaut-data-hibernate-jpa</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut.sql</groupId>
		<artifactId>micronaut-hibernate-jpa</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut</groupId>
		<artifactId>micronaut-http-server-netty</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>io.micronaut</groupId>
		<artifactId>micronaut-runtime</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>com.amazonaws</groupId>
		<artifactId>aws-java-sdk-iot</artifactId>
		<version>1.11.327</version>
	</dependency>
	<dependency>
		<groupId>io.micronaut.sql</groupId>
		<artifactId>micronaut-jdbc-hikari</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>io.swagger.core.v3</groupId>
		<artifactId>swagger-annotations</artifactId>
		<scope>compile</scope>
	</dependency>
	<dependency>
		<groupId>org.projectlombok</groupId>
		<artifactId>lombok</artifactId>
		<scope>provided</scope>
	</dependency>
	<dependency>
		<groupId>org.slf4j</groupId>
		<artifactId>slf4j-simple</artifactId>
		<scope>runtime</scope>
	</dependency>
	<dependency>
		<groupId>org.postgresql</groupId>
		<artifactId>postgresql</artifactId>
		<scope>runtime</scope>
	</dependency>

	<dependency>
		<groupId>javax.persistence</groupId>
		<artifactId>javax.persistence-api</artifactId>
		<version>2.2</version>
	</dependency>
</dependencies>

<build>
	<plugins>
		<plugin>
			<groupId>io.micronaut.build</groupId>
			<artifactId>micronaut-maven-plugin</artifactId>
		</plugin>

		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-compiler-plugin</artifactId>
			<configuration>
				<!-- Uncomment to enable incremental compilation -->
				<!-- <useIncrementalCompilation>false</useIncrementalCompilation> -->

				<annotationProcessorPaths
					combine.self="override">
					<path>
						<groupId>org.projectlombok</groupId>
						<artifactId>lombok</artifactId>
						<version>${lombok.version}</version>
					</path>
					<path>
						<groupId>io.micronaut</groupId>
						<artifactId>micronaut-http-validation</artifactId>
						<version>${micronaut.version}</version>
					</path>
					<path>
						<groupId>io.micronaut</groupId>
						<artifactId>micronaut-inject-java</artifactId>
						<version>${micronaut.version}</version>
					</path>
					<path>
						<groupId>io.micronaut</groupId>
						<artifactId>micronaut-validation</artifactId>
						<version>${micronaut.version}</version>
					</path>
					<path>
						<groupId>javax.persistence</groupId>
						<artifactId>javax.persistence-api</artifactId>
						<version>2.2</version>
					</path>
					<path>
						<groupId>io.micronaut.data</groupId>
						<artifactId>micronaut-data-processor</artifactId>
						<version>${micronaut.data.version}</version>
					</path>
				</annotationProcessorPaths>
				<compilerArgs>
					<arg>-Amicronaut.processing.group=com.team.ifs</arg>
					<arg>-Amicronaut.processing.module=iot-device-provision</arg>
				</compilerArgs>
			</configuration>
		</plugin>
	</plugins>
</build>

`

All the Repository classes have been annotated using @repository annotation and also the below properties are added to our property file
jpa.default.entity-scan.packages=com.team.iot

Could you please let me know what I am doing wrong here

[graemerocher]

You can find JPA guides and sample applications here https://guides.micronaut.io/latest/micronaut-jpa-hibernate-maven-java.html