PropertyData createdData =
(PropertyData)dataManager.getItemData(vd, new QPathEntry(Constants.JCR_CREATED, 0), ItemType.PROPERTY);
if (createdData == null)
throw new VersionException("jcr:created is not found, version: " + vd.getQPath().getAsString());
Calendar created = null;
try
{
created = new JCRDateFormat().deserialize(new String(createdData.getValues().get(0).getAsByteArray()));