Choice object with explicit tag
Sometimes it is needed to explicitly specify the type of a choice object. This is done by adding a specific key-value pair to the object.
This specification below says that we should write the yaml as one of the three given options and add the key-value pair type: <tag-value> to the object to specify which option we chose. This is denoted by the Internal tag named type text.
ExamFileType
Internal tag named type.
One of the following items:
| tag-value | datatype of value | description |
|---|---|---|
| template | TemplateFile | An exam that uses a template. |
| normal | NormalExam | A normal exam. |
| diagnostic | DiagnosticExam | An exam in diagnostic mode. |
If we want to choose the template option, we would write the following yaml for an ExamFileType:
type: template # set the internal tag
# TemplateFile
template: path_to_template
any_key: any_value
If we want to choose the normal option, we would write the following yaml for an ExamFileType:
type: normal # set the internal tag
# NormalExam
name: The name of the exam
# ... more fields
If we want to choose the diagnostic option, we would write the following yaml for an ExamFileType:
type: diagnostic # set the internal tag
# DiagnosticExam
name: The name of the diagnostic exam
# ... more fields