Harvesters / GeoNetwork harvester / Re-add exiting files when re-harvesting

[juanluisrp]

getResourceDescription must return null if the resource doesn't exist. This way the caller Aligner process
can save the file again as it checks for null to know if the resource exists or not.

This was causing that in the first harvest run the file was created but in the following run it was deleted and not added again because the aligner thought the file still existed.

[josegar74]

The code changes are aligned with the other stores, that return null if there is an error in the method. For example:

core-geonetwork/core/src/main/java/org/fao/geonet/api/records/attachments/CMISStore.java

Lines 412 to 417 in 7c8ce3c

	try {
	final CmisObject object = cmisConfiguration.getClient().getObjectByPath(key);
	return createResourceDescription(context, metadataUuid, visibility, filename, (Document)object, metadataId, approved);
	} catch (CmisObjectNotFoundException e) {
	return null;
	}

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication