@GET
public Blob convert(
@QueryParam("converter") String converter,
@QueryParam("type") String type,
@QueryParam("format") String format,
@Context UriInfo uriInfo) {
BlobHolder bh = getBlobHolderToConvert();
boolean txWasActive = false;
try {
if (TransactionHelper.isTransactionActive()) {
txWasActive = true;
TransactionHelper.commitOrRollbackTransaction();
}
if (StringUtils.isNotBlank(converter)) {
return convertWithConverter(bh, converter, uriInfo);
} else if (StringUtils.isNotBlank(type)) {
return convertWithMimeType(bh, type, uriInfo);
} else if (StringUtils.isNotBlank(format)) {
return convertWithFormat(bh, format, uriInfo);
} else {
throw new IllegalParameterException("No converter, type or format parameter specified");
}
} finally {
if (txWasActive && !TransactionHelper.isTransactionActiveOrMarkedRollback()) {
TransactionHelper.startTransaction();
}
}
}
protected void triggerReloadWithNewTransaction(String id) {
if (TransactionHelper.isTransactionMarkedRollback()) {
throw new AssertionError("The calling transaction is marked rollback");
} else if (TransactionHelper.isTransactionActive()) { // should flush
// the calling
// transaction
TransactionHelper.commitOrRollbackTransaction();
TransactionHelper.startTransaction();
}
try {
try {
triggerReload(id);
} catch (RuntimeException cause) {
TransactionHelper.setTransactionRollbackOnly();
throw cause;
}
} finally {
if (TransactionHelper.isTransactionActiveOrMarkedRollback()) {
boolean wasRollbacked = TransactionHelper.isTransactionMarkedRollback();
TransactionHelper.commitOrRollbackTransaction();
TransactionHelper.startTransaction();
if (wasRollbacked) {
TransactionHelper.setTransactionRollbackOnly();
}
}
}
}
protected void nextTransaction() {
if (TransactionHelper.isTransactionActiveOrMarkedRollback()) {
TransactionHelper.commitOrRollbackTransaction();
TransactionHelper.startTransaction();
}
}