Migration from JPA

Migrating from Spring Data JPA is very easy. We implemented a OpenRewrite recipe for that. It can be executed with a simple Maven command:

Maven

mvn org.openrewrite.maven:rewrite-maven-plugin:run \
-Drewrite.recipeArtifactCoordinates=software.xdev:spring-data-eclipse-store-migration \
-Drewrite.activeRecipes=software.xdev.spring.data.eclipse.store.JpaMigration

Since Spring-Data-Eclipse-Store can’t handle @Query-Annotations, these annotations are getting removed by the Rewrite-Recipe.

Data

To import data from different data sources like JPA, you can simply let the EclipseStoreDataImporterComponent get injected and then call importData(). This reads all instances of EntityManagerFactory, creates EclipseStoreRepositories for it and then imports that data. This can take quite some time if you have a lot of data.

@Autowired
private EclipseStoreDataImporterComponent eclipseStoreDataImporter;

void importDataFromJpaToEclipseStore()
{
    final List<SimpleEclipseStoreRepository<?, ?>> repositories = this.eclipseStoreDataImporter.importData();
}

After that you can change your JpaRepositories to EclipseStoreRepositories and you’re done.