I created two Maven projects using Netbeans 8.0.1 to illustrate a problem: common1 and common2 (jars).
common1:
package pck1
@MappedSuperclass
public class Entity1 implements Serializable {
@Basic(optional = false)
@Column(name = "val")
protected String val;
}
package pck2
@Entity
@Table(name = "entity2")
public class Entity2 extends Entity1 {
@Id
private Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence ...>
<persistence-unit name="PU-1" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
</persistence-unit>
</persistence>
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project ...>
<modelVersion>4.0.0</modelVersion>
<groupId>com.ent</groupId>
<artifactId>common1</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.5.2</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa.modelgen.processor</artifactId>
<version>2.5.2</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
common2
package pck3
@Entity
@Table(name = "entity3")
public class Entity3 extends Entity1 {
@Id
private Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence ...>
<persistence-unit name="PU-2" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
</persistence-unit>
</persistence>
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project ...>
<modelVersion>4.0.0</modelVersion>
<groupId>com.ent</groupId>
<artifactId>common2</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>com.ent</groupId>
<artifactId>common1</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.5.2</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa.modelgen.processor</artifactId>
<version>2.5.2</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
After build process I see generated sources with canonical metamodels in Netbeans:
common1
package pck1
@Generated(value="EclipseLink-2.5.2.v20140319-rNA", date="2014-11-11T13:39:25")
@StaticMetamodel(Entity1.class)
public class Entity1_ {
public static volatile SingularAttribute<Entity1, String> val;
}
package pck2
@Generated(value="EclipseLink-2.5.2.v20140319-rNA", date="2014-11-11T13:39:25")
@StaticMetamodel(Entity2.class)
public class Entity2_ extends Entity1_ {
public static volatile SingularAttribute<Entity2, Long> id;
}
common2
package pck3
@Generated(value="EclipseLink-2.5.2.v20140319-rNA", date="2014-11-11T13:39:31")
@StaticMetamodel(Entity3.class)
public class Entity3_ {
public static volatile SingularAttribute<Entity3, Long> id;
}
The question is why Entity3_ not extends Entity1_ as Entity2_? What am I doing wrong?
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