io.hypersistence.optimizer.core.event.persistence

Class MetadataEventSchemaCreator

java.lang.Object

io.hypersistence.optimizer.core.event.persistence.MetadataEventSchemaCreator

All Implemented Interfaces:

EventSchemaCreator

public class MetadataEventSchemaCreator
extends Object
implements EventSchemaCreator

The MetadataEventSchemaCreator creates, on demand, the database tables used by the event persistence feature.

Instead of hand-written DDL, it relies on Hibernate's own hbm2ddl tooling: a short-lived, throwaway SessionFactory is built from the canonical entity model (HypersistenceOptimizerBootstrapRun, HypersistenceOptimizerBootstrapEvent and HypersistenceOptimizerRuntimeEvent) with hibernate.hbm2ddl.auto=update, so the tables are generated with the exact types and identity strategy of the underlying database dialect, across every database Hibernate supports. The throwaway SessionFactory borrows connections from the host application's pool (via HostConnectionProvider) and is closed immediately after the schema has been created; it is only used for DDL, never to persist events (those are written with plain JDBC by EventStore).

Since:

2.14.0

Author:

Vlad Mihalcea

Constructor Summary

Constructors

Constructor and Description
MetadataEventSchemaCreator(EventPersistenceSettings settings)

Method Summary

Modifier and Type	Method and Description
void	createSchema() Apply CREATE using the canonical IDENTITY mappings.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetadataEventSchemaCreator

public MetadataEventSchemaCreator(EventPersistenceSettings settings)

Method Detail

createSchema

public void createSchema()

Apply CREATE using the canonical IDENTITY mappings. This does not introduce sequence generators.

Specified by:

createSchema in interface EventSchemaCreator