Metamodel generator / Processor loses generic type parameter for Set<String> in Hibernate 7

Hibernate ORM
1

In Hibernate 6, a field annotated with @Column @NotNull private Set<String> issueTypeLabels mapped to a Postgres VARCHAR ARRAY column generated:

public static volatile SingularAttribute<TestEntity, Set<String>> issueTypeLabels;

In Hibernate 7 with our without @JdbcTypeCode(SqlTypes.ARRAY) added, the generator produces a raw type:

public static volatile SingularAttribute<TestEntity, Set> issueTypeLabels;

Steps to reproduce: Entity field with @JdbcTypeCode(SqlTypes.ARRAY) and Set<String> type.

Expected: SingularAttribute<TestEntity, Set<String>>

Actual: SingularAttribute<TestEntity, Set> (raw type)

Example:

@MappedSuperclass
public abstract class BaseEntity implements Serializable {

    @Id
    private UUID id = UUID.randomUUID();

    public UUID getId() {
        return id;
    }

    public void setId(UUID id) {
        this.id = id;
    }
}

@Entity
public class TestEntity extends BaseEntity {

    @Column
    @JdbcTypeCode(SqlTypes.ARRAY)
    private Set<String> tags = new HashSet<>();

    @Column
    private String name;

    public Set<String> getTags() {
        return tags;
    }

    public void setTags(Set<String> tags) {
        this.tags = tags;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}


/**
 * Static metamodel for {@link com.example.hibernateissue.TestEntity}
 **/
@StaticMetamodel(TestEntity.class)
@Generated("org.hibernate.processor.HibernateProcessor")
public abstract class TestEntity_ extends BaseEntity_ {

    
    /**
     * @see #tags
     **/
    public static final String TAGS = "tags";
    
    /**
     * @see #name
     **/
    public static final String NAME = "name";

    
    /**
     * Static metamodel type for {@link com.example.hibernateissue.TestEntity}
     **/
    public static volatile EntityType<TestEntity> class_;
    
    /**
     * Static metamodel for attribute {@link com.example.hibernateissue.TestEntity#tags}
     **/
    public static volatile SingularAttribute<TestEntity, Set> tags;
    
    /**
     * Static metamodel for attribute {@link com.example.hibernateissue.TestEntity#name}
     **/
    public static volatile SingularAttribute<TestEntity, String> name;

}



plugins {
    java
    id("org.springframework.boot") version "4.0.6"
    id("io.spring.dependency-management") version "1.1.7"
}

group = "com.example"
version = "0.0.1-SNAPSHOT"
description = "hibernate-issue"

java {
    toolchain {
        languageVersion = JavaLanguageVersion.of(21)
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
    runtimeOnly("org.postgresql:postgresql")
    annotationProcessor("org.hibernate.orm:hibernate-processor")
    testImplementation("org.springframework.boot:spring-boot-starter-data-jpa-test")
    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
}

tasks.withType<Test> {
    useJUnitPlatform()
}
3

Thanks, this looks like a bug. Please create a bug ticket in our issue tracker and attach that reproducer.

4