Package org.apache.lucene.util.automaton

Class Transition

  • All Implemented Interfaces:
    java.lang.Cloneable
    public class Transition
extends java.lang.Object
implements java.lang.Cloneable
    Automaton transition.

    A transition, which belongs to a source state, consists of a Unicode codepoint interval and a destination state.

    • Constructor Summary

      Constructors 
      Constructor Description
      Transition​(int min, int max, State to)
      Constructs a new transition.
      Transition​(int c, State to)
      Constructs a new singleton interval transition.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Transition clone()
      Clones this transition.
      boolean equals​(java.lang.Object obj)
      Checks for equality.
      State getDest()
      Returns destination of this transition.
      int getMax()
      Returns maximum of this transition interval.
      int getMin()
      Returns minimum of this transition interval.
      int hashCode()
      Returns hash code.
      java.lang.String toString()
      Returns a string describing this state.

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

      • CompareByDestThenMinMax

        public static final java.util.Comparator<Transition> CompareByDestThenMinMax

      • CompareByMinMaxThenDest

        public static final java.util.Comparator<Transition> CompareByMinMaxThenDest

    • Constructor Detail

      • Transition

        public Transition​(int c,
                  State to)
        Constructs a new singleton interval transition.
        Parameters:
        c - transition codepoint
        to - destination state

      • Transition

        public Transition​(int min,
                  int max,
                  State to)
        Constructs a new transition. Both end points are included in the interval.
        Parameters:
        min - transition interval minimum
        max - transition interval maximum
        to - destination state

    • Method Detail

      • getMin

        public int getMin()
        Returns minimum of this transition interval.

      • getMax

        public int getMax()
        Returns maximum of this transition interval.

      • getDest

        public State getDest()
        Returns destination of this transition.

      • equals

        public boolean equals​(java.lang.Object obj)
        Checks for equality.
        Overrides:
        equals in class java.lang.Object
        Parameters:
        obj - object to compare with
        Returns:
        true if obj is a transition with same character interval and destination state as this transition.

      • hashCode

        public int hashCode()
        Returns hash code. The hash code is based on the character interval (not the destination state).
        Overrides:
        hashCode in class java.lang.Object
        Returns:
        hash code

      • clone

        public Transition clone()
        Clones this transition.
        Returns:
        clone with same character interval and destination state

      • toString

        public java.lang.String toString()
        Returns a string describing this state. Normally invoked via Automaton.toString().
        Overrides:
        toString in class java.lang.Object