The link created by 'slreq.createLink' is for a requirement having a description. Multiple requirements can be satisfied by a single destination file for a given source file, Hence 'slreq.createLink' creates a link but with a new SID.
You want to prevent multiple links between same source and destination files.
To prevent this behaviour you can check for if a link already exists between a source and destination file and create a link if it is not present. Here is a simple MATLAB function for the same.
function linkExist = checkIfLinkExists(src, dest)
inwardLinks = slreq.inLinks(dest);
linkExist = 0;
for i=1:size(inwardLinks,2)
if strcmp(source(inwardLinks(i)).artifact, which(src))
linkExist = 1;
return
end
end
end
Please go through this official MATLAB documentation of 'slreq.inLinks' to learn more.
doc slreq.inLinks
You can also access the workdlow of creating and link requirements from this documention.
web(fullfile(docroot, 'slrequirements/gs/author-requirements-for-a-matlab-function.html'))
