What is the recommended way to use transactions from a restlet?
Apparently they are not transactional by default, because throwing an exception
after having done a CoreSession#createDocument() or CoreSession#saveDocument()
has no effect, the document is created nonetheless.
I've found the class SimpleTxManager, and currently I'm using that, but I
wondered if there is a way to declare the whole restlet as transactional,
without having to start/commit/rollback manually.
Also, does it make a difference if the restlet uses Seam or not?
And finally, what is the difference between CoreSession#createDocument() (or
CoreSession#saveDocument()) and CoreSession#save()? Is the latter always
needed? The javadocs are not very explanatory...
I am testing with this code:
---
@Name("docCreationRestlet")
@Scope(ScopeType.EVENT)
public class DocCreationRestlet extends BaseNuxeoRestlet
{
private static final Log log = LogFactory.getLog(DocCreationRestlet.class);
@In(create = true)
protected transient NavigationContext navigationContext;
protected CoreSession documentManager;
@Override
public void handle(Request request, Response response)
{
[...]
try
{
navigationContext.setCurrentServerLocation(new
RepositoryLocation("default"));
documentManager = navigationContext.getOrCreateDocumentManager();
// let's create a document
DocumentModel doc = documentManager.createDocumentModel("/",
"some-id", "SomeType");
documentManager.createDocument(doc);
// is this needed?
documentManager.save();
throw new ClientException();
}
catch (Exception e)
{
// this certainly does not work!
documentManager.cancel();
}
[...]
}
}
---
Thanks for your time.
Daniel Pérez Álvarez
Technological Solutions
Atos Origin
+34 91 126 7290
C/ Albasanz, 16
28037 Madrid
Spain
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