Attachment location

pratikbiz24 · March 17, 2021, 12:55pm

Hello everyone,

I want to know that how and where attachments are stored in openmrs.

Is the whole attachment stored in the database or only attachment’s path is stored in the database ?

So in short i want to know that is attachment stored in database or in openmrs-core directory ?

herbert24 · March 17, 2021, 1:02pm

the image name is stored to the database and the image to the server,checkout

github.com

HerbertYiga/openmrs-module-attachments/blob/9c61cf896be64bb09544287a567140df387b97dd/api/src/main/java/org/openmrs/module/attachments/ComplexObsSaver.java#L79


		
		conceptComplex = context.getConceptComplex(ContentFamily.IMAGE);
		prepareComplexObs(visit, person, encounter, fileCaption);
		
		Object image = multipartFile.getInputStream();
		double compressionRatio = getCompressionRatio(multipartFile.getSize(), 1000000 * context.getMaxStorageFileSize());
		if (compressionRatio < 1) {
			image = Thumbnails.of(ImageIO.read(multipartFile.getInputStream())).scale(compressionRatio).asBufferedImage();
		}
		obs.setComplexData(
		    complexDataHelper.build(instructions, multipartFile.getOriginalFilename(), image, multipartFile.getContentType())
		            .asComplexData());
		obs = context.getObsService().saveObs(obs, getClass().toString());
		return obs;
	}
	
	public Obs saveOtherAttachment(Visit visit, Person person, Encounter encounter, String fileCaption,
	        MultipartFile multipartFile, String instructions) throws IOException {
		conceptComplex = context.getConceptComplex(ContentFamily.OTHER);
		prepareComplexObs(visit, person, encounter, fileCaption);

pratikbiz24 · March 17, 2021, 1:06pm

what is stored in the database ? Image name or Image path.

herbert24 · March 17, 2021, 1:10pm

its the name

pratikbiz24 · March 17, 2021, 1:13pm

ok so on which basis it fetches image from the server.

On the basis of Image name ?

mksd · March 17, 2021, 1:20pm

@pratikbiz24 the first things to know is that an attachment is just some kind of wrapper for a complex obs. Complex obs are saved by default in the OpenMRS app data dir inside the /complex_obs subfolder.

It is the value_complex field of the complex obs that holds parseable string data to its location.

There is no general rule as to what’s stored in the database within the obs’ value_complex (image name vs image path vs whatever other locator info), that depends on the complex obs handler defined for a given complex obs.

herbert24 · March 17, 2021, 1:24pm

thanks @mksd

pratikbiz24 · March 17, 2021, 1:26pm

Thanks @mksd , Now i understood how it’s working .