/**
* Returns the type of ID that DBRE should use for the given entity
*
* @param entity the entity for which to get the ID type (required)
* @return a non-<code>null</code> ID type
*/
private JavaType getIdentifierType(final JavaType entity) {
final PhysicalTypeMetadata governorPhysicalTypeMetadata = getPhysicalTypeMetadata(entity);
if (governorPhysicalTypeMetadata != null) {
final ClassOrInterfaceTypeDetails governorTypeDetails =
governorPhysicalTypeMetadata.getMemberHoldingTypeDetails();
final AnnotationMetadata jpaAnnotation = getJpaAnnotation(governorTypeDetails);
if (jpaAnnotation != null) {
final AnnotationAttributeValue<?> identifierTypeAttribute =
jpaAnnotation.getAttribute(new JavaSymbolName(IDENTIFIER_TYPE));
if (identifierTypeAttribute != null) {
// The identifierType attribute exists, so get its value
final JavaType identifierType = (JavaType) identifierTypeAttribute.getValue();
if (identifierType != null && !JdkJavaType.isPartOfJavaLang(identifierType)) {
return identifierType;
}
}
}
}
// The JPA annotation's "identifierType" attribute does not exist or is
// not a simple type, so return a default
return new JavaType(entity.getFullyQualifiedTypeName() + PRIMARY_KEY_SUFFIX);
}
