Java 类org.hibernate.type.IdentifierType 实例源码

@SuppressWarnings("unchecked")
@Override
public <T extends Serializable, I extends Serializable> T get(Class<T> type, I id) {
    Object idv = id;
    String name = type.getName();
    ClassMetadata classMetadata = (ClassMetadata) new MetadataResolver().getAllClassMetadata(sessionFactory).get(name);
    String oid = classMetadata.getIdentifierPropertyName();
    if (id instanceof String) {
        IdentifierType<?> identifierType = (IdentifierType<?>) classMetadata.getIdentifierType();
        if (!(identifierType instanceof StringType)) {
            try {
                idv = identifierType.stringToObject((String) id);
            } catch (Exception ex) {
                throw new RuntimeException(ex);
            }
        }
    }
    QueryParameters hql = new QueryParameters("from " + name + " where " + oid + "=:" + oid,
            new QueryParameter().setName(oid).setValueTypeText(idv));
    logger.debug("hql={}", hql);
    List<Serializable> value = execute(hql).getResults().getValue();
    return (T) (value.isEmpty() ? null : value.get(0));
}