org.hibernate.id.UUIDGeneratorCustom Maven / Gradle / Ivy

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package org.hibernate.id;

import java.io.Serializable;
import java.util.Properties;

import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.type.Type;

/**
 * @see org.hibernate.jpa.spi.IdentifierGeneratorStrategyProvider#getStrategies()
 * @see org.hibernate.jpa.AvailableSettings#IDENTIFIER_GENERATOR_STRATEGY_PROVIDER
 * @see org.hibernate.engine.spi.SessionImplementor
 * @see org.hibernate.engine.spi.SharedSessionContractImplementor
 */
public class UUIDGeneratorCustom extends UUIDGenerator {
  public static final String GENERATOR_STRATEGY = UUIDGeneratorCustom.class.getName();
  private String entityName;

  @Override
  public void configure(Type type, Properties params, ServiceRegistry serviceRegistry) throws MappingException {
    this.entityName = params.getProperty(ENTITY_NAME);
    super.configure(type, params, serviceRegistry);
  }

  @Override
  public Serializable generate(SharedSessionContractImplementor session, Object object) throws HibernateException {
    Serializable serializable = session.getEntityPersister(this.entityName, object).getIdentifier(object, session);
    return serializable == null ? super.generate(session, object) : serializable;
  }
}