Special character in entity ID leads to invalid self link [DATAREST-447]

Glenn Boschmans opened DATAREST-447 and commented

In my current project IDs of a certain entity need to have special characters like "§". When you traverse the entities the self url of an entity with a special character will become an invalid one where the /{collectionpath}/{entityId} is replicated.

In the GitHub repository you can find a project that reproduces the issue.

When starting the server go to http://localhost:9666/testcases/ to see all the test cases. There the self link for each entity is still ok (note: the special characters are escaped). Once you traverse to one of the testcases with a special character, you will see that the JSON will be something in the likes of the following.

{
"id": "3§1A",
"someStuff": "look at my wrong self link",
"_links": {
"self": {
"href": "http://localhost:9666/testcases/3%C2%A71A/testcases/3%C2%A71A"
}
}
}

For the testcase with id "OK" the JSON response is correct.

{
"id": "OK",
"someStuff": "no issue here",
"_links": {
"self": {
"href": "http://localhost:9666/testcases/OK"
}
}
}

Reference URL: https://github.com/GlennBoschmans/data-rest-special-char

Referenced from: pull request https://github.com/GlennBoschmans/data-rest-special-char