XML record format

The XML record format used by FICO Application Studio has the following structure: The top-level element is InputRecordList (for inputs) or ResultRecordList (for results), which always contains a single InputRecord or ResultRecord. Data comes in the form of scalars or arrays.

• Scalars are represented as values enclosed in a named element, as shown in the example below.
• Arrays are represented as a 'table' comprised of a named element which contains multiple 'rec' (_rec) elements that represent rows of the table. Each table row contains multiple elements representing individual cells. The following example has a table named 'Channels' with three columns: 'Channel', 'Cost', and 'Capacity'.

<?xml version="1.0"?>
<InputRecordList xmlns="http://www.fico.com/input"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <InputRecord>
    <MyScalarValue>7.5</MyScalarValue>
    <AnotherScalar>a string value</AnotherScalar>
    <Channels>
      <Channels_rec>
        <Channel>1</Channel>
        <Cost>0.5</Cost>
        <Capacity>100</Capacity>
      </Channels_rec>
      <Channels_rec>
        <Channel>2</Channel>
        <Cost>1.2</Cost>
        <Capacity>50</Capacity>
      </Channels_rec>
      <Channels_rec>
        <Channel>3</Channel>
        <Cost>3</Cost>
        <Capacity>40</Capacity>
      </Channels_rec>
    </Channels>
  </InputRecord>
</InputRecordList>

In a Mosel model, data input from such XML files needs to be preceeded by a call to appsxmlimport to register the inputs:

declarations
  myScalar: real
  ChannelCost,ChannelCapacity: array(CHANNELS: range) of real
end-declarations

appsxmlimport
initialisations from appsxmlin("MyScalarValue")
  myScalar as "[](MyScalarValue)"
end-initialisations
initialisations from appsxmlin("Channels")
  [ChannelCost,ChannelCapacity] as "[](Channel,Cost,Capacity)
end-initialisations

Inversely, data output from a Mosel model needs to be terminated with a call to appsxmlexport to generate the XML format data and the corresponding XSD schema definition from the output data:

declarations
  ResultCost,ResultCapacity: array(CHANNELS: range) of real
end-declarations

initialisations appsxmlout("ResultChannels")
  [ChannelCost,ChannelCapacity] as "[](ResultChannel,ResultCost,ResultCapacity)"
end-initialisations
appsxmlexport

Please note that array data needs to be specified in sparse format, that is, all indices are specified along with the value columns.