Documents and Media portlet

Issue

1. When we select multiple files using Liferay DMS to upload. Does it upload any info related to the file to the server when it is selected?
2. When we select and publish multiple documents does it process multiple files as a single process or multiple processes?
3. While multiple file upload is it a single part /multiple part upload?
4. How upload form(Liferay Multiple files Upload Page) is being submitted, is it using Ajax form submission?
5. In case of multiple file uploads, are files getting uploaded one by one?
6. Location of temporary files.

Environment

• Liferay DXP 7.3
• Liferay DXP 7.4

Resolution

1. The physical file and its metadata will be uploaded to Liferay only when publishing.
2. The uploading process will happen to each file individually, user may check uploading multiple files with different sizes to see the different timing for each upload process. However, the publishing process will submit all of them at once.
3. Answer 2 applies here for this query.
4. It uses JS code to upload the file, not a regular form submission.
   
5. Answer 2 applies here as well.
6. The file is saved in the path defined in the systems property("java.io.tmpdir")