Class RuleChain


  • public class RuleChain
    extends java.lang.Object
    A chain of rules: actually in this incarnation just a pointer to the first rule in the chain, the others being linked together each to the next.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      java.lang.Object optimizationData  
    • Constructor Summary

      Constructors 
      Constructor Description
      RuleChain()
      Create an empty rule chain
      RuleChain​(Rule head)
      Create an rule chain with a give rule as the head of the chain
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int getLength()
      Get the length of the rule chain
      Rule head()
      Get the first rule in the chain, or null if the chain is empty
      void setHead​(Rule head)
      Set the first rule in the chain, or null if the chain is empty
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • optimizationData

        public java.lang.Object optimizationData
    • Constructor Detail

      • RuleChain

        public RuleChain()
        Create an empty rule chain
      • RuleChain

        public RuleChain​(Rule head)
        Create an rule chain with a give rule as the head of the chain
        Parameters:
        head - the head of a chain of rules
    • Method Detail

      • head

        public Rule head()
        Get the first rule in the chain, or null if the chain is empty
        Returns:
        the first rule in the chain, or null if empty
      • setHead

        public void setHead​(Rule head)
        Set the first rule in the chain, or null if the chain is empty
        Parameters:
        head - the first rule in the chain, or null if empty
      • getLength

        public int getLength()
        Get the length of the rule chain
        Returns:
        the number of rules in the chain