Type Coercion not working in a @container inside another @container

[hyprdia]

Describe the bug
A clear and concise description of what the bug is.

Type coecion is not applied when a @container is defined inside another @container. In the example below I define friends as a container:

...
"friends": {
  "@id": "core:User@1/core:Friends",
  "@type": "@id",
  "@container": [
    "@id",
    "@set"
  ]
}
...

This container is present inside the top users container:

...
"users": {
  "@id": "core:Group@1/core:Users",
  "@container": "@set"
}
...

To Reproduce
Steps to reproduce the behavior:

Here is a test that will reproduce the bug:

    @Test
    void titaniumExpansionTest() throws JsonLdError {

        String jsonString = """
            {
              "@context": {
                "@base": "https://api.example.com/data/",
                "core": "https://api.example.com/classes/core:",
                "sh": "http://www.w3.org/ns/shacl#",
                "xsd": "http://www.w3.org/2001/XMLSchema#",
                "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
                "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
                "users": {
                  "@id": "core:Group@1/core:Users",
                  "@container": "@set"
                },
                "core:User@1": {
                  "@context": {
                    "type": {
                      "@id": "core:User@1/core:Type",
                      "@type": "@id"
                    },
                    "friends": {
                      "@id": "core:User@1/core:Friends",
                      "@type": "@id",
                      "@container": [
                        "@id",
                        "@set"
                      ]
                    },
                    "path": {
                      "@id": "core:User@1/core:Path",
                      "@type": "xsd:string",
                      "@container": "@list"
                    }
                  }
                }
              },
              "@id": "02wBzNotDceDYnLYE2ndhH",
              "@type": "core:Group@1/core:Users",
              "users": {
                "@set": [
                  {
                    "@id": "02wBzNotbWW1ROCZxlUjmw",
                    "@type": "core:User@1",
                    "type": "02w7bdDtd7owQzsKGCALDs",
                    "friends": {
                      "@set": [
                        "02w7bdDtj3RI0BJoMGltwK",
                        "02w7bdDtj3RI08x102ToY2"
                      ]
                    },
                    "path": {
                      "@list": [
                        "john"
                      ]
                    }
                  }
                ]
              }
            }
        """;

        ExpansionApi expanded = JsonLd.expand(
                        JsonDocument.of(
                                new ByteArrayInputStream(
                                        jsonString.getBytes(
                                                StandardCharsets.UTF_8
                                        )
                                )
                        )
                ).mode(JsonLdVersion.V1_1)
                .ordered(true)
                .base("https://api.example.com/");
        
        String expected = """
            [
              {
                "@id": "https://api.example.com/data/02wBzNotDceDYnLYE2ndhH",
                "@type": [
                  "https://api.example.com/classes/core:Group@1/core:Users"
                ],
                "https://api.example.com/classes/core:Group@1/core:Users": [
                  {
                    "@id": "https://api.example.com/data/02wBzNotbWW1ROCZxlUjmw",
                    "@type": [
                      "https://api.example.com/classes/core:User@1"
                    ],
                    "https://api.example.com/classes/core:User@1/core:Friends": [
                      {
                        "@id": "https://api.example.com/data/02w7bdDtj3RI0BJoMGltwK"
                      },
                      {
                        "@id": "https://api.example.com/data/02w7bdDtj3RI08x102ToY2"
                      }
                    ],
                    "https://api.example.com/classes/core:User@1/core:Path": [
                      {
                        "@list": [
                          {
                            "@value": "john"
                          }
                        ]
                      }
                    ],
                    "https://api.example.com/classes/core:User@1/core:Type": [
                      {
                        "@id": "https://api.example.com/data/02w7bdDtd7owQzsKGCALDs"
                      }
                    ]
                  }
                ]
              }
            ]
                """;

        assertEquals(StringUtils.deleteWhitespace(expected), expanded.get().toString());
    }

Expected behavior
A clear and concise description of what you expected to happen.

I would expect the values inside the friends list to be considered as ids and prepended the defined @base but it's not the case, although I take the same source Json and put it inside Json Playground and it works.

Here is a screenshot of the differences from Json Playground (on the left, Titanium on the right). Here we can clearly see that type coercion is applied in the Json Playground:

Additional context
Add any other context about the problem here.

I am using the latest distributed version (1.4.0), the same problem is present in Apache Jena 4.10.

[filip26]

@hyprdia thank you for reporting the bug, it will be fixed in the next release.

[filip26]

It's a bug in @container: @id expansion. [@index, @set] container mapping works ok.

[hyprdia]

@filip26 Thank you!! I will put this to work pretty soon.