References were not added to PDFs on Drag&Drop

[Joeran]

Sometimes, references are not added to PDFs when I drag&drop PDFs from the Windows Explorer to Docear.

You need to follow EXACTLY the following steps (otherwise, it won't work).

• Maybe this error occurs only with Windows
• Get my dissertation project from the SVN
• Start Docear and open the incoming map
• In the Windows Explorer open \Dissertation\Literature\test für docear monitoring\
• Select all PDFs in that folder via CTRL+A
• Click on the PDF "Evaluating recommender systems from the user's perspective..." and drag&drop the PDFs to a node in the mind-map. It's important to click on exactly this PDF. With all other PDFs, the problem won't occur
• Except for the first PDF, no bibliographic data is added to the nodes
• As mentioned, when you do drag&drop with another PDF, metadata is added to more PDFs (in this case to three nodes).
• However, this is how it should look like (there are references for four of the PDFs)

[Joeran]

i just saw there there even was an exception. i sent you the log file by email. search for https://github.com/Docear/Desktop/issues/390

[genzmehr]

the "missing references" problem is caused by a thread-timing conflict. Our reference-updater is a asynchronous process with a mechanism that prevent multiple updates at the same time by discarding new update request while another is running. Now we have the problem that nodes are inserted too fast and so some following update request are getting discarded.

there is currently no fix for this issue other than using a short timeout to allow the update process to catch up and reduce this effect as much as possible.

[stlanger]

will work differently with the new BibTeX-view concept in the new workspace