Commodity - Commodity Priority (optional, may appear multiple times)

In Cyclus, a commodity is used to define how agents can interact. Commodities are simply used to define which resources a facility can request and/or offer. The list of commodities in a problem is defined exclusively by the commodities that are used in the definition of facility prototypes.

The commodity input block is only used to indicate a non-default priority for a particular commodity in the dynamic resource exchange solution.

A commodity block has the following sections in the following order:

• name (required once) - the unique name for this commodity

• solution_priority (required once) - a number that defines the relative priority for resolution in the dynamic resource exchange (Default: -1)

Example

XML:

<commodity>
  <name>enriched_u</name>
  <solution_priority>5.5</solution_priority>
</commodity>

<commodity>
  <name>waste</name>
  <solution_priority>4.5</solution_priority>
</commodity>

JSON:

{"commodity": [
    {"name": "enriched_u", "solution_priority": 5.5},
    {"name": "waste", "solution_priority": 4.5}
    ]
}

Python:

{"commodity": [
    {"name": "enriched_u", "solution_priority": 5.5},
    {"name": "waste", "solution_priority": 4.5},
    ],
}

In this example, while there may be many commodities used in the problem, two of them are given explicit priorities. The enriched_u has the highest priority followed by waste. Note that these particular names do not imply any specific composition of the commodity; this will be determined later by the facilities that trade in these commodities.

Grammar Definition

<oneOrMore>
  <element name="commodity">
    <element name="name"> <text/> </element>
    <element name="solution_priority"> <data type="double"/> </element>
  </element>
</oneOrMore>