Hibernate save binary file

In real applications I have never seen use cases such as saving very large gigabytes files in DB, generally large files stores in Image servers or cloud or server local drive and path locations and file info stores in DB.

If any use case you came across such as saving huge huge gigabytes files in DB please comment in this post. Save my name, email, and website in this browser for the next time I comment. Our primary goal is to provide simple and effective tutorials with well tested working examples for the all level of developers.

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It is mandatory to procure user consent prior to running these cookies on your website. Great website with great tutorial! I look forward to seeing your work grow over time. Hi, could you write your solution here for other people who have the same issue like you? Once you save stuff to the filesystem, you get all sorts of problems and headaches that you otherwise would avoid. Filesystem rights — Deployment gets yet another thing you need to do right. Organizaton — Folders with huge numbers of files put a heavy strain on your system performance after time.

Used Hibernate 4. The exact question is: how to avoid loading stream into memory when storing a blob in database using Hibernate, using direct streaming instead. I'd like to avoid off topics about why one stores video in column of database instead of storing it in some content repository and linking.

Please, consider it a model what is irrelevant to the question. It seems that there might be some kind of capabilities on different dialects and Hibernate might try to load everything in memory, because underlying database doesn't support streaming blobs or something like that. If it's the case - i'd like to see some kind of comparative table between different dialects in aspect of handling blobs.

My bad, the code works as supposed to streams without trying to copy to memory for PostgreSQL and probably lots of others. The inner work of Hibernate depends on selected dialect. The one I used in the first place overrides direct use of streams in favor of BinaryStream backed by byte[]. Also there are no problems with performance, since it loads only OID number in case of PostgreSQL, and probably lazy loads data in case of other dialects including byte[] implementation.

Just ran some dirty tests, no visible difference in loads of entity with and without binary data field. Storing data in database seems to be slower than just saving it on disk as external file though. But it saves you a lot of headache when backing up, or dealing with limitations of particular file system, or concurrent updates, etc.

But it's an off-topic. Your solution using Hibernate's lobHelper should work, but you may need to make sure that the use of streams is enforced. Set property hibernate. This means if the blob is larger than your heap space, anytime you work with this object or access the data field, you're going to get the OutOfMemoryError because the entire thing is loaded into memory.

What you may have to do is remove the data field from the SimpleBean object so that it's not stored in memory when you load or save.