@Override
protected void onRun() throws Exception {
// TODO: When the rest of storage is rewritten using TransactionRunnable,
// this method should be disolved.
final Session session = this.context.getWiki().getHibernateStore().getSession(this.context);
// Delete the content from the attachment.
// In case it was stored in the database by XWikiHibernateAttachmentStore.
session.delete(new XWikiAttachmentContent(this.attachment));
// Update the document if required.
if (this.updateDocument) {
final String filename = this.attachment.getFilename();
final List<XWikiAttachment> list = attachment.getDoc().getAttachmentList();
for (int i = 0; i < list.size(); i++) {
if (filename.equals(list.get(i).getFilename())) {
list.remove(i);
break;
}
}
this.context
.getWiki()
.getStore()
.saveXWikiDoc(this.attachment.getDoc(), this.context, false);
}
// Delete the attachment metadata.
session.delete(this.attachment);
}
/**
* Make sure the attachment is associated with a document.
*
* @param attachment the attachment to check.
* @throws IllegalArgumentException if attachment.getDoc() yields null.
*/
private static void checkAttachedToDocument(final XWikiAttachment attachment) {
if (attachment.getDoc() == null) {
throw new IllegalArgumentException(
"In order to use this function, the attachment ["
+ attachment.getFilename()
+ "] must be associated with a document.");
}
}
/**
* Construct a TransactionRunnable for saving the attachment content.
*
* @param attachment the XWikiAttachment whose content should be saved.
* @param updateDocument whether or not to update the document at the same time.
* @param context the XWikiContext for the request.
* @param attachFile the File to store the attachment in.
* @param tempFile the File to put the attachment content in until the transaction is complete.
* @param backupFile the File to backup the content of the existing attachment in.
* @param lock this Lock will be locked while the attachment file is being written to.
* @throws XWikiException if thrown by {@link XWikiAttachment#updateContentArchive(XWikiContext)}
* or {@link FilesystemAttachmentVersioningStore#
* getArchiveSaveRunnable(XWikiAttachmentArchive, XWikiContext)
*/
AttachmentSaveTransactionRunnable(
final XWikiAttachment attachment,
final boolean updateDocument,
final XWikiContext context,
final File attachFile,
final File tempFile,
final File backupFile,
final ReadWriteLock lock)
throws XWikiException {
final StreamProvider provider = new AttachmentContentStreamProvider(attachment, context);
new FileSaveTransactionRunnable(attachFile, tempFile, backupFile, lock, provider).runIn(this);
// If the versioning store supports TransactionRunnable then use it, otherwise don't.
final AttachmentVersioningStore avs = context.getWiki().getAttachmentVersioningStore();
final XWikiAttachmentArchive archive = attachment.getAttachment_archive();
if (avs instanceof FilesystemAttachmentVersioningStore) {
final FilesystemAttachmentVersioningStore favs = (FilesystemAttachmentVersioningStore) avs;
// If first save then create a new archive.
if (archive == null) {
favs.getArchiveSaveRunnable(new ListAttachmentArchive(attachment), context).runIn(this);
} else {
favs.getArchiveSaveRunnable(archive, context).runIn(this);
}
} else {
new TransactionRunnable<XWikiHibernateTransaction>() {
protected void onRun() throws XWikiException {
avs.saveArchive(archive, context, false);
}
}.runIn(this);
}
// If updating of the parent document is required then add a TransactionRunnable to do that.
if (updateDocument) {
final XWikiStoreInterface store = context.getWiki().getStore();
final XWikiDocument doc = attachment.getDoc();
new TransactionRunnable<XWikiHibernateTransaction>() {
protected void onRun() throws XWikiException {
store.saveXWikiDoc(doc, context, false);
}
}.runIn(this);
}
this.attachment = attachment;
this.updateDocument = updateDocument;
this.context = context;
}