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[Enhancement]: When deserialising and then serialising a statement the objectType the value should be retained #201
Description
What
When deserialising and then serialising a statement the objectType the value should be retained.
This applies to all objects in a statement that have an objectType.
Deserialising and then serialising statement with an objectType :
final var json = """
{
"actor":{
"name":"A N Other",
"mbox":"mailto:another@example.com"
},
"verb":{
"id":"http://adlnet.gov/expapi/verbs/attempted"
},
"object":{
"objectType":"Activity",
"id":"https://example.com/activity/simplestatement"
}
}""";
final var statement = objectMapper.readValue(json, Statement.class);
final var result = objectMapper.writeValueAsString(statement);
assertThat(result, hasJsonPath("$.object.objectType"));Deserialising and then serialising statement without an objectType:
final var json = """
{
"actor":{
"name":"A N Other",
"mbox":"mailto:another@example.com"
},
"verb":{
"id":"http://adlnet.gov/expapi/verbs/attempted"
},
"object":{
"id":"https://example.com/activity/simplestatement"
}
}""";
final var statement = objectMapper.readValue(json, Statement.class);
final var result = objectMapper.writeValueAsString(statement);
assertThat(result, hasNoJsonPath("$.object.objectType"));Why
An LRS is expected to return minimal and canonical versions of statements.
Minimal versions of a statement do not contain objectType.
Canonical versions of a statement should contain the objectType as originally sent to the LRS by the LRP.
It is worth noting that the objectType property is optional when it is not ambiguous. This creates a complication because it can not be assumed that the original statement contained the objectType property.
Notes
No response
Activity
When deserialising and then serialising a statement the objectType va…