Radek Felcman

This change in EclipseLink JPA performance tests replace physical database by emulated one. Emulation is based on `org.eclipse.persistence.testing.tests.performance.emulateddb.*` classes (JDBC driver). There are some fixes like new required `EmulatedDatabaseMetaData` class...

In EclipseLink project are for some testing purposes some files stored in UTF-16 encoding. In this case helidon-enforcer plugin will fail during copyright check.

Plus new Maven test module to test EclipseLink with Helidon

Implementation plus unit test according https://github.com/jakartaee/persistence/pull/379 https://github.com/jakartaee/persistence/issues/400 There are two kind of usages in the entities: - `@EmbeddedId` as (composite) primary key - `@Embedded` as (composite) entity attribute There is...

This is initial POC/fix for #2114 #2100 and #2094 I think, that changes will be there. This PR is mentioned as start point of the discussion as deadlock are is...

Fix for event when massive dumps, triggered by dead lock diagnostic, are produced. Before this fix the concurrency layers should continue to update structures (Maps, Sets) passed to dead lock...

Fixes #2286

Fixes #2188 Location and execution context of this fix is different, than other `this` fixes. This one is located in `org.eclipse.persistence.jpa.jpql.AbstractSemanticValidator#validateStateFieldPathExpression` and executed by `org.eclipse.persistence.internal.jpa.jpql.HermesParser#validate` in `org.eclipse.persistence.core` module when project...

Add support for UUID DB type in PostgreSQL for DDL generation. This type is supported by PostgreSQL from 2008 see https://www.postgresql.org/docs/9.3/release-8-3.html This is why target class is `PostgreSQLPlatform`. Fixes #2190