`Number`

A literal Number constant value.

A Number in CER is an arbitrarily-long decimal value, specified using a period (".") as the decimal separator and without any thousands separator.

CER business calculations can often involve percentage values, e.g. "Deduct 10% of the person's income". To help with the codification of such rules, CER allows a Number to be specified as a percentage, by simply suffixing the number with %. For example, the numbers 12.345% and 0.12345 will behave identically in calculations (but the percentage version will display in percentage form).

<?xml version="1.0" encoding="UTF-8"?>
<RuleSet name="Example_Number"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:noNamespaceSchemaLocation=
"http://www.curamsoftware.com/CreoleRulesSchema.xsd">
  <Class name="NumberExampleRuleClass">

    <Attribute name="aPositiveInteger">
      <type>
        <javaclass name="Number"/>
      </type>
      <derivation>
        <!-- A positive integer -->
        <Number value="1"/>
      </derivation>
    </Attribute>

    <Attribute name="aNegativeInteger">
      <type>
        <javaclass name="Number"/>
      </type>
      <derivation>
        <!-- A negative integer -->
        <Number value="-2"/>
      </derivation>
    </Attribute>

    <Attribute name="aDecimalNumber">
      <type>
        <javaclass name="Number"/>
      </type>
      <derivation>
        <!-- A decimal number.

             Numbers are arbitrarily long/precise, use "." for
             the decimal separator and have no thousands
             separator.
        -->
        <Number value="-12345.6789"/>
      </derivation>
    </Attribute>

    <Attribute name="aPercentage">
      <type>
        <javaclass name="Number"/>
      </type>
      <derivation>
        <!-- A percentage
            (12.345% is equivalent to the number 0.12345) -->
        <Number value="12.345%"/>
      </derivation>
    </Attribute>

  </Class>

</RuleSet>