https://github.com/spring-projects/spring-framework: Spring Transaction (Spring IO)
  • Juergen Hoeller 
Annotation support for DAOs. Contains a bean post-processor for translating
persistence exceptions based on a repository stereotype annotation.

/**
 * Annotation support for DAOs. Contains a bean post-processor for translating
 * persistence exceptions based on a repository stereotype annotation.
 */
@NonNullApi
@NonNullFields
package org.springframework.dao.annotation;

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