{
    "dimensions": [
        {
         "name":"item",
         "levels": [
                {
                    "name":"category",
                    "label":"Category",
                    "attributes": ["category", "category_label"]
                },
                {
                    "name":"subcategory",
                    "label":"Sub-category",
                    "attributes": ["subcategory", "subcategory_label"]
                },
                {
                    "name":"line_item",
                    "label":"Line Item",
                    "attributes": ["line_item"]
                }
            ]
        },
        {"name":"year", "role": "time"}
    ],
    "cubes": [
        {
            "name": "irbd_balance",
            "dimensions": ["item", "year"],
            "measures": [
                {"name":"amount", "label":"Amount"},
                {"name":"double_amount", "label":"Double Amount",
                  "expression": "amount * 2"}
            ],
            "aggregates": [
                    {
                        "name": "amount_sum",
                        "function": "sum",
                        "measure": "amount"
                    },
                    {
                        "name": "double_amount_sum",
                        "expression": "sum(double_amount)"
                    },
                    {
                        "name": "record_count",
                        "function": "count"
                    }
                ],
            "mappings": {
                          "item.line_item": "line_item",
                          "item.subcategory": "subcategory",
                          "item.subcategory_label": "subcategory_label",
                          "item.category": "category",
                          "item.category_label": "category_label"
                         },
            "info": {
                "min_date": "2010-01-01",
                "max_date": "2010-12-31"
            }
        }
    ]
}