DataNucleus annotation processor for generating the JPA static metamodel classes for use with JPA Criteria queries
Home Page: http://www.datanucleus.org/products/accessplatform/jpa/query.html#metamodel
DataNucleus annotation processor for use with JPA Criteria queries, to generate the MetaModel.
This is built using Maven, by executing mvn clean install which installs the built jar in your local Maven repository.
License : Apache 2 licensed
Issue Tracker : http://github.com/datanucleus/datanucleus-jpa-query/issues
Javadocs : 6.0, 5.0, 4.0, 3.0, 2.1
Download(Releases) : Maven Central
Download(Nightly) : Nightly Builds
Dependencies : See file pom.xml
A field
@Basic
@Lob
private ArrayList<byte[]> imageData = new ArrayList<>();
results in generation of
public static volatile ListAttribute<MyEntity, byte> imageData;
which isn't valid Java and treats a byte[] as byte which is simply wrong using
<plugin>
<groupId>org.bsc.maven</groupId>
<artifactId>maven-processor-plugin</artifactId>
<version>3.3.2</version>
<executions>
<execution>
<id>datanucleus-metamodel</id>
<goals>
<goal>process</goal>
</goals>
<phase>generate-sources</phase>
<configuration>
<processors>
<processor>org.datanucleus.jpa.query.JPACriteriaProcessor</processor>
</processors>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-jpa-query</artifactId>
<version>5.0.3</version>
</dependency>
</dependencies>
</plugin>
A SSCCE is https://gitlab.com/krichter/datanucleus-metamodel-bite-array-field.
experienced with 5.0.3 and 5.0.4-SNAPSHOT and DataNucleus 5.1.4
I believe any static field in the entities should be ignored, but the compiler does include them into the metamodel. I only discovered it because I have type parameters, and the compilation choked on them, as they are copied from the source class, without being resolved.
I've posted the test case at [email protected]:veselov/test-jpa.git
Running mvn test fails.
Workaround is to mark the field as @Transient
A field
@Basic
@Lob
private AbstractUnit<?> priceUnit = (AbstractUnit<?>)AbstractUnit.ONE;
results in generation of
public static volatile SingularAttribute<MyEntity, tec.uom.se.AbstractUnit<Q>> priceUnit;
which uses an unspecified generic parameter Q and thus causes invalid Java code using
<plugin>
<groupId>org.bsc.maven</groupId>
<artifactId>maven-processor-plugin</artifactId>
<version>3.3.2</version>
<executions>
<execution>
<id>datanucleus-metamodel</id>
<goals>
<goal>process</goal>
</goals>
<phase>generate-sources</phase>
<configuration>
<processors>
<processor>org.datanucleus.jpa.query.JPACriteriaProcessor</processor>
</processors>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-jpa-query</artifactId>
<version>5.0.4-SNAPSHOT</version>
</dependency>
</dependencies>
</plugin>
A SSCCE is https://gitlab.com/krichter/datanucleus-metamodel-abstrakt-unit-field.
experienced with 5.0.3 and 5.0.4-SNAPSHOT and DataNucleus 5.1.4 including the fix of #4
The similarity of #4 and this issue point to missing unit test cases or low test coverage. I'll try to get a build script running for a CI service like Travis or GitLab CI which integrates with a coverage measure platform and suggest a PR. In case that fails, you should consider it.
Allows us to mark them as generated classes, and the origin of the generation
If we have a field like
@NotNull
@Size(max=32)
String myField
this can sometimes come through the type.toString() as
@javax.validation.constraints.NotNull,@javax.validation.constraints.Size(max=32) java.lang.String
No idea why, because javax.persistence annotations are stripped off.
Seen when using Java9+
Why they move classes in a JRE I've no idea. Needs a new version of the query processor for use with java9+
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