@Override
public AttachmentDAO getAttachmentInfo(final String id) throws AttachmentMgtException {
try {
AttachmentDAO resultantDAO =
jobExecutor.execTransaction(
new Callable<AttachmentDAO>() {
@Override
public AttachmentDAO call() throws Exception {
AttachmentDAO attachmentDAO = null;
attachmentDAO = entityManager.find(AttachmentDAOImpl.class, Long.parseLong(id));
return attachmentDAO;
}
});
if (resultantDAO != null) {
return resultantDAO;
} else {
throw new AttachmentMgtException("Attachment not found for id : " + id);
}
} catch (Exception e) {
String errorMsg =
"org.wso2.carbon.attachment.mgt.core.dao.impl.hibernate.AttachmentMgtDAOFactoryImpl.getAttachmentInfo operation failed. "
+ "Reason: "
+ e.getLocalizedMessage();
log.error(errorMsg, e);
throw new AttachmentMgtException(errorMsg, e);
}
}
@Override
public AttachmentDAO addAttachment(final Attachment attachment) throws AttachmentMgtException {
try {
AttachmentDAO resultantDAO =
jobExecutor.execTransaction(
new Callable<AttachmentDAO>() {
@Override
public AttachmentDAO call() throws Exception {
AttachmentDAO attachmentDAO = new AttachmentDAOImpl();
attachmentDAO.setName(attachment.getName());
attachmentDAO.setCreatedBy(attachment.getCreatedBy());
attachmentDAO.setContentType(attachment.getContentType());
attachmentDAO.setUrl(URLGeneratorUtil.generateURL());
attachmentDAO.setContent(attachment.getContent());
entityManager.persist(attachmentDAO);
if (entityManager.contains(attachmentDAO)) {
return attachmentDAO;
} else {
String errorMsg = "Attachment couldn't persist in the Data Store";
throw new AttachmentMgtException(errorMsg);
}
}
});
return resultantDAO;
} catch (Exception e) {
String errorMsg =
"org.wso2.carbon.attachment.mgt.core.dao.impl.hibernate.AttachmentMgtDAOFactoryImpl.addAttachment operation failed. "
+ "Reason: "
+ e.getLocalizedMessage();
log.error(errorMsg, e);
throw new AttachmentMgtException(errorMsg, e);
}
}
@Override
public boolean removeAttachment(final String id) throws AttachmentMgtException {
try {
boolean isRemoved = false;
isRemoved =
jobExecutor.execTransaction(
new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
Query query =
entityManager.createQuery(
"DELETE FROM org.wso2.carbon.attachment.mgt.core.dao.impl"
+ ".jpa.openjpa.entity.AttachmentDAOImpl x WHERE x.id = "
+ ":attachmentID");
query.setParameter("attachmentID", Long.parseLong(id));
int noOfRowsUpdated = query.executeUpdate();
// entityManager.remove(getAttachmentInfo(id));
if (noOfRowsUpdated == 1) {
return true;
} else {
return false;
}
}
});
return isRemoved;
} catch (Exception e) {
String errorMsg =
"org.wso2.carbon.attachment.mgt.core.dao.impl.hibernate.AttachmentMgtDAOFactoryImpl.removeAttachment operation failed. "
+ "Reason: "
+ e.getLocalizedMessage();
log.error(errorMsg, e);
throw new AttachmentMgtException(errorMsg, e);
}
}
@Override
public AttachmentDAO getAttachmentInfoFromURL(final String attachmentURI)
throws AttachmentMgtException {
try {
AttachmentDAO resultantDAO =
jobExecutor.execTransaction(
new Callable<AttachmentDAO>() {
@Override
public AttachmentDAO call() throws Exception {
Query query =
entityManager.createQuery(
"SELECT x FROM org.wso2.carbon.attachment.mgt.core.dao.impl.jpa.openjpa.entity.AttachmentDAOImpl AS x WHERE x.url = :attachmentURI");
query.setParameter("attachmentURI", attachmentURI);
List<AttachmentDAO> daoList = query.getResultList();
if (daoList.isEmpty()) {
throw new AttachmentMgtException(
"Attachment not found for the uri:" + attachmentURI);
} else if (daoList.size() != 1) {
String errorMsg =
"There exist more than one attachment for the attachment URI:"
+ attachmentURI
+ ". org"
+ ".wso2.carbon.attachment.mgt.util.URLGeneratorUtil.generateURL method has generated "
+ "similar uris for different attachments. This has caused a major inconsistency for "
+ "attachment management.";
log.fatal(errorMsg);
throw new AttachmentMgtException(errorMsg);
} else {
return daoList.get(0);
}
}
});
return resultantDAO;
} catch (Exception e) {
String errorMsg =
"org.wso2.carbon.attachment.mgt.core.dao.impl.hibernate.AttachmentMgtDAOFactoryImpl.getAttachmentInfoFromURL operation failed. "
+ "Reason: "
+ e.getLocalizedMessage();
log.error(errorMsg, e);
throw new AttachmentMgtException(errorMsg, e);
}
}
