https://github.com/spring-projects/spring-framework: Spring Object/Relational Mapping (Spring IO)
  • Juergen Hoeller 
Support classes for adapting to specific JPA vendors.

/**
 * Support classes for adapting to specific JPA vendors.
 */
@NonNullApi
@NonNullFields
package org.springframework.orm.jpa.vendor;

import org.springframework.lang.NonNullApi;
import org.springframework.lang.NonNullFields;