Set question

Schema

A set question:
- must satisfy the base-question schema
- must have a sets property
- must have a items property
- must have a random property
- must have a penalty property
- may have a solutions property
The sets property:
- must be an array
- must contain at least one item
- Each item:
  - must be an object
  - must be unique
  - must satisfy the content schema
The items property:
- must be an array
- must contain at least one item
- Each item:
  - must satisfy the content schema
  - must be unique
The random property:
- must be a boolean
The penalty property:
- must be a number
The solutions property:
- must be an object
- must have an associations property
- may have an odd property
- Each association:
  - must be unique
  - must have a setId property
  - must have a itemId property
  - must have a score property
  - may have a feedback property
- The setId property:
  - must be a string
- The itemId property:
  - must be a string
- The score property:
  - must be a number
- The feedback property:
  - must be a string

Examples

Basic

{
  "id": "1",
  "type": "application/x.set+json",
  "content": "Question ?",
  "penalty": 1,
  "random": false,
  "sets": [
    {
      "id": "2",
      "type": "text/html",
      "data": "Set A"
    },
    {
      "id": "3",
      "type": "text/html",
      "data": "Set B"
    }
  ],
  "items": [
    {
      "id": "4",
      "type": "text/plain",
      "data": "Item X"
    },
    {
      "id": "5",
      "type": "text/plain",
      "data": "Item Y"
    },
    {
      "id": "6",
      "type": "text/plain",
      "data": "Item Z"
    }
  ]
}

With solutions

{
  "id": "1",
  "type": "application/x.set+json",
  "content": "Question ?",
  "penalty": 1,
  "random": false,
  "sets": [
    {
      "id": "2",
      "type": "text/html",
      "data": "Set A"
    },
    {
      "id": "3",
      "type": "text/html",
      "data": "Set B"
    }
  ],
  "items": [
    {
      "id": "4",
      "type": "text/plain",
      "data": "Item X"
    },
    {
      "id": "5",
      "type": "text/plain",
      "data": "Item Y"
    },
    {
      "id": "6",
      "type": "text/plain",
      "data": "Item Z"
    }
  ],
  "solutions": {
    "associations": [
      {
        "setId": "2",
        "itemId": "4",
        "score": 3
      },
      {
        "setId": "3",
        "itemId": "5",
        "score": 0.5
      }
    ]
  }
}

With feedback

{
  "id": "1",
  "type": "application/x.set+json",
  "content": "Question ?",
  "penalty": 1,
  "random": false,
  "sets": [
    {
      "id": "2",
      "type": "text/html",
      "data": "Set A"
    },
    {
      "id": "3",
      "type": "text/html",
      "data": "Set B"
    }
  ],
  "items": [
    {
      "id": "4",
      "type": "text/plain",
      "data": "Item X"
    },
    {
      "id": "5",
      "type": "text/plain",
      "data": "Item Y"
    },
    {
      "id": "6",
      "type": "text/plain",
      "data": "Item Z"
    }
  ],
  "solutions": {
    "associations": [
      {
        "setId": "2",
        "itemId": "4",
        "score": 3,
        "feedback": "Lorem ipsum"
      },
      {
        "setId": "3",
        "itemId": "5",
        "score": 0.5,
        "feedback": "Lorem ipsum"
      }
    ]
  }


}

With odds

{
  "id": "1",
  "type": "application/x.set+json",
  "content": "Question ?",
  "penalty": 1,
  "random": false,
  "sets": [
    {
      "id": "2",
      "type": "text/html",
      "data": "Set A"
    },
    {
      "id": "3",
      "type": "text/html",
      "data": "Set B"
    }
  ],
  "items": [
    {
      "id": "3",
      "type": "text/plain",
      "data": "Item W"
    },
    {
      "id": "4",
      "type": "text/plain",
      "data": "Item X"
    },
    {
      "id": "5",
      "type": "text/plain",
      "data": "Item Y"
    },
    {
      "id": "6",
      "type": "text/plain",
      "data": "Item Z"
    }
  ],
  "solutions": {
    "associations": [
      {
        "setId": "2",
        "itemId": "4",
        "score": 3,
        "feedback": "Lorem ipsum"
      },
      {
        "setId": "3",
        "itemId": "5",
        "score": 0.5,
        "feedback": "Lorem ipsum"
      }
    ],
    "odd": [
      {
        "itemId": "3",
        "score": -1,
        "feedback": "Dolor sit amet"
      }
    ]
  }
}