Dieser Ausdruck ermittelt den größten Wert in einer Liste (bzw. null, falls die Liste leer ist).
Die Liste kann jeden beliebigen Typ eines vergleichbaren Objekts enthalten. Hierzu zählen (unter anderem) die folgenden Typen:
<?xml version="1.0" encoding="UTF-8"?> <RuleSet name="Example_max" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation= "http://www.curamsoftware.com/CreoleRulesSchema.xsd"> <Class name="MaxExampleRuleClass"> <!-- Will pick out "Cherry" as the "largest" String value --> <Attribute name="alphabeticallyLastFruit"> <type> <javaclass name="String"/> </type> <derivation> <max> <reference attribute="fruits"/> </max> </derivation> </Attribute> <Attribute name="fruits"> <type> <javaclass name="List"> <javaclass name="String"/> </javaclass> </type> <derivation> <fixedlist> <listof> <javaclass name="String"/> </listof> <members> <String value="Apple"/> <String value="Banana"/> <String value="Cherry"/> </members> </fixedlist> </derivation> </Attribute> <!-- Determines the number of spots on the spottiest dog --> <Attribute name="largestNumberOfSpots"> <type> <javaclass name="Number"/> </type> <derivation> <max> <dynamiclist> <list> <reference attribute="dalmatians"/> </list> <listitemexpression> <reference attribute="numberOfSpots"> <current/> </reference> </listitemexpression> </dynamiclist> </max> </derivation> </Attribute> <Attribute name="dalmatians"> <type> <javaclass name="List"> <ruleclass name="Dalmation"/> </javaclass> </type> <derivation> <specified/> </derivation> </Attribute> </Class> <Class name="Dalmation"> <Attribute name="numberOfSpots"> <type> <javaclass name="Number"/> </type> <derivation> <specified/> </derivation> </Attribute> </Class> </RuleSet>