How to use

idClass

method

in

org.springframework.data.repository.RepositoryDefinition

public Class<? extends Serializable> getIdType() {
  RepositoryDefinition annotation = repositoryInterface.getAnnotation(RepositoryDefinition.class);
  return annotation == null ? null : annotation.idClass();
}

private Class<?> resolveIdType(Class<?> repositoryInterface) {
  RepositoryDefinition annotation = repositoryInterface.getAnnotation(RepositoryDefinition.class);
  if (annotation == null || annotation.idClass() == null) {
    throw new IllegalArgumentException(String.format("Could not resolve id type of %s!", repositoryInterface));
  }
  return annotation.idClass();
}

@Override
protected RepositoryMetadata resolveFromInterface(Class<?> repositoryInterface) {
  final RepositoryDefinition definition = repositoryInterface.getAnnotation(RepositoryDefinition.class);
  if (definition == null) {
    throw new RepositoryDefinitionException(repositoryInterface, "Expected the repository to be annotated with @RepositoryDefinition");
  }
  final Class<?> entityType = definition.domainClass();
  final Class<? extends Serializable> idType = definition.idClass();
  String idProperty = resolveIdProperty(entityType, idType);
  return new ImmutableRepositoryMetadata(idType, entityType, repositoryInterface, idProperty);
}

@Override
protected RepositoryMetadata resolveFromInterface(Class<?> repositoryInterface) {
  final RepositoryDefinition definition = repositoryInterface.getAnnotation(RepositoryDefinition.class);
  if (definition == null) {
    throw new RepositoryDefinitionException(repositoryInterface, "Expected the repository to be annotated with @RepositoryDefinition");
  }
  final Class<?> entityType = definition.domainClass();
  final Class<? extends Serializable> idType = definition.idClass();
  String idProperty = resolveIdProperty(entityType, idType);
  return new ImmutableRepositoryMetadata(idType, entityType, repositoryInterface, idProperty);
}