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Question

I’ve created a simple Quarkus application that interacts with a backend database, using the repository pattern and a scheduled bean to count the records in the database on a regular basis. During compilation, the quarkus-maven-plugin throws an jakarta.enterprise.inject.UnsatisfiedResolutionException stating it cannot find the repository, and I can’t seem to figure out why. The build of the reproducible example fails with the following error:

[ERROR] Failed to execute goal io.quarkus.platform:quarkus-maven-plugin:3.12.0:build (default) on project sample-monitor-service: Failed to build quarkus application: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
[ERROR]     [error]: Build step io.quarkus.arc.deployment.ArcProcessor#validate threw an exception: jakarta.enterprise.inject.spi.DeploymentException: jakarta.enterprise.inject.UnsatisfiedResolutionException: Unsatisfied dependency for type com.foo.db.SampleDaoRepository and qualifiers [@Default]
[ERROR]     - injection target: parameter 'sampleDaoRepository' of com.foo.service.SampleManager constructor
[ERROR]     - declared on CLASS bean [types=[com.foo.service.SampleManager, java.lang.Object], qualifiers=[@Default, @Any], target=com.foo.service.SampleManager]
[ERROR]     at io.quarkus.arc.processor.BeanDeployment.processErrors(BeanDeployment.java:1546)
[ERROR]     at io.quarkus.arc.processor.BeanDeployment.init(BeanDeployment.java:338)
[ERROR]     at io.quarkus.arc.processor.BeanProcessor.initialize(BeanProcessor.java:167)
[ERROR]     at io.quarkus.arc.deployment.ArcProcessor.validate(ArcProcessor.java:490)
[ERROR]     at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
[ERROR]     at java.base/java.lang.reflect.Method.invoke(Method.java:580)
[ERROR]     at io.quarkus.deployment.ExtensionLoader$3.execute(ExtensionLoader.java:849)
[ERROR]     at io.quarkus.builder.BuildContext.run(BuildContext.java:256)
[ERROR]     at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
[ERROR]     at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2516)
[ERROR]     at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2495)
[ERROR]     at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1521)
[ERROR]     at java.base/java.lang.Thread.run(Thread.java:1583)
[ERROR]     at org.jboss.threads.JBossThread.run(JBossThread.java:483)
[ERROR] Caused by: jakarta.enterprise.inject.UnsatisfiedResolutionException: Unsatisfied dependency for type com.foo.db.SampleDaoRepository and qualifiers [@Default]
[ERROR]     - injection target: parameter 'sampleDaoRepository' of com.foo.service.SampleManager constructor
[ERROR]     - declared on CLASS bean [types=[com.foo.service.SampleManager, java.lang.Object], qualifiers=[@Default, @Any], target=com.foo.service.SampleManager]
[ERROR]     at io.quarkus.arc.processor.Beans.resolveInjectionPoint(Beans.java:519)
[ERROR]     at io.quarkus.arc.processor.BeanInfo.init(BeanInfo.java:642)
[ERROR]     at io.quarkus.arc.processor.BeanDeployment.init(BeanDeployment.java:323)
[ERROR]     ... 12 more
[ERROR] -> [Help 1]

I’ve included a minimal reproducible example, composed of 3 classes. The example is set up with Java 21, and Maven.

Example broken into two projects, as a maven multi-module project. Parent project is sample-monitor, the dao and repository classes are defined in sample-monitor/sample-monitor-db, and the driver class is defined in sample-monitor/sample-monitor-service.

sample-monitor/pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.foo</groupId>
  <artifactId>sample-monitor</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <properties>
    <lombok.version>1.18.32</lombok.version>
  </properties>

  <modules>
    <module>sample-monitor-service</module>
    <module>sample-monitor-db</module>
  </modules>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>io.quarkus.platform</groupId>
        <artifactId>quarkus-bom</artifactId>
        <version>3.12.0</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>com.foo</groupId>
        <artifactId>sample-monitor-db</artifactId>
        <version>${project.version}</version>
      </dependency>

      <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>${lombok.version}</version>
      </dependency>
    </dependencies>
  </dependencyManagement>
</project>

sample-monitor/sample-monitor-db/pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.foo</groupId>
        <artifactId>sample-monitor</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>

    <artifactId>sample-monitor-db</artifactId>

    <dependencies>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-jdbc-postgresql</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-hibernate-orm</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-hibernate-orm-panache</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>io.quarkus</groupId>
                            <artifactId>quarkus-panache-common</artifactId>
                            <version>${quarkus.platform.version}</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>${lombok.version}</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

sample-monitor/sample-monitor-db/src/main/java/com/foo/db/SampleDao.java:

package com.foo.db;

import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
import lombok.Data;

@Data
@Entity
@Table(name = "sample")
public class SampleDao {
    @Id
    private String id;
    private String name;
}

sample-monitor/sample-monitor-db/src/main/java/com/foo/db/SampleDaoRepository.java:

package com.foo.db;

import io.quarkus.hibernate.orm.panache.PanacheRepository;
import jakarta.enterprise.context.ApplicationScoped;

@ApplicationScoped
public class SampleDaoRepository implements PanacheRepository<SampleDao> {
}

sample-monitor/sample-monitor-service/pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.foo</groupId>
        <artifactId>sample-monitor</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>

    <artifactId>sample-monitor-service</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.foo</groupId>
            <artifactId>sample-monitor-db</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-scheduler</artifactId>
        </dependency>
    </dependencies>
    
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>io.quarkus</groupId>
                            <artifactId>quarkus-panache-common</artifactId>
                            <version>${quarkus.platform.version}</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>${lombok.version}</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>
            <plugin>
                <groupId>io.quarkus.platform</groupId>
                <artifactId>quarkus-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>build</goal>
                            <goal>generate-code</goal>
                            <goal>generate-code-tests</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

sample-monitor/sample-monitor-service/src/main/java/com/foo/service/SampleManager.java

package com.foo.service;

import com.foo.db.SampleDaoRepository;
import io.quarkus.scheduler.Scheduled;
import jakarta.inject.Singleton;

@Singleton
public class SampleManager {

    private SampleDaoRepository sampleDaoRepository;

    public SampleManager(SampleDaoRepository sampleDaoRepository) {
        this.sampleDaoRepository = sampleDaoRepository;
    }

    @Scheduled(every = "2m")
    public void countAll() {
        System.out.println("Counted " + sampleDaoRepository.count() + " records");
    }
}

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