As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
I want to know how to detect when a metadata has been modified. I want to compare the last number of version of the document and the working copy before I do Check In. When I modified some metadada (not a file) I want to increment minor version number automatically. And when I modified a file I want to increment major version number automatically.
Thanks in advance,
Kind regards.
Hello,
You have to use a listener (http://doc.nuxeo.com/x/C4AO). You can create it under Studio (if you use it) or under Eclipse Nuxeo IDE plugin (wizard listener).
Subscribe to the event ABOUT_TO_CREATE (about to create listener) to check metadata updates before any changes have been commited.
Thanks
My solution as contribution to the community.
Event: DOCUMENT_MODIFIED
public class ModificationListener implements EventListener {
private static final Log log = LogFactory.getLog(ModificationListener.class); public void handleEvent(Event event) throws ClientException { EventContext ctx = event.getContext(); if (!(ctx instanceof DocumentEventContext)) { // event is not tied to a document, we should not be here return; } // Fetch the document from the event context DocumentModel doc = ((DocumentEventContext) ctx).getSourceDocument(); if (doc == null) return; if (!doc.isVersionable()) return; try { BlobProperty currentBlob = (BlobProperty) doc.getProperty("file:content"); BlobProperty lastBlob = getLastBlob(ctx, doc.getRef()); //If currentDoc hasn't a file... if(currentBlob.getValue() == null){ //... and never had a file ... if(lastBlob.getValue() == null){ doc.checkIn(VersioningOption.MINOR, "Metadata modification."); }else{ //... or file delete doc.checkIn(VersioningOption.MAJOR, "File delete"); } return; } //If currentDoc has a file but lastDoc hasn't a file if(lastBlob.getValue() == null){ doc.checkIn(VersioningOption.MAJOR, "File creation"); return; } //If currentDoc has a file and lastDoc has a file ==> compare the digesto if(currentBlob.getValue("digest").equals(lastBlob.getValue("digest"))){ doc.checkIn(VersioningOption.MINOR, "Metadata modification."); }else{ doc.checkIn(VersioningOption.MAJOR, "File modification."); } } catch (PropertyException e) { //If currentDoc hasn't a file:contenct Ej: Nota doc.checkIn(VersioningOption.MINOR, "Metadata modification."); log.warn("[ERROR_1 Automatizacion de versionado]: "+e.getMessage()); } } /** * * @param ctx Contexto * @param ref Referencia al documento * @return la propiedad Blob del ultimo documento */ public BlobProperty getLastBlob(EventContext ctx, DocumentRef ref){ DocumentModel lastDocVersion; try { lastDocVersion = ctx.getCoreSession().getVersions(ref).get( ctx.getCoreSession().getVersions(ref).size()-1); BlobProperty lastBlob = (BlobProperty) lastDocVersion.getProperty("file:content"); return lastBlob; } catch (PropertyException e) { log.warn("[ERROR_2 Automatizacion de versionado]: "+e.getMessage()); } catch (ClientException e1) { log.warn("[ERROR_3 Automatizacion de versionado]: "+e1.getMessage()); } return null; }
}
Thanks a lot!
