Enum TxnStatus

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<TxnStatus>

    public enum TxnStatus
    extends java.lang.Enum<TxnStatus>
    An enumeration of all possible states a Txn can have.
    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      Aborted
      When a Txn failed to commit.
      Active
      When a Txn is running.
      Committed
      When a Txn successfully committed.
      Prepared
      When the Txn has been checked for conflicts and all resources have been claimed to make sure that a commit is going to succeed.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      private boolean alive  
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private TxnStatus​(boolean alive)  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean isAlive()
      Checks if the Txn still is active/prepared.
      static TxnStatus valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static TxnStatus[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait
    • Enum Constant Detail

      • Active

        public static final TxnStatus Active
        When a Txn is running.
      • Prepared

        public static final TxnStatus Prepared
        When the Txn has been checked for conflicts and all resources have been claimed to make sure that a commit is going to succeed.
      • Aborted

        public static final TxnStatus Aborted
        When a Txn failed to commit.
      • Committed

        public static final TxnStatus Committed
        When a Txn successfully committed.
    • Field Detail

      • alive

        private final boolean alive
    • Constructor Detail

      • TxnStatus

        private TxnStatus​(boolean alive)
    • Method Detail

      • values

        public static TxnStatus[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (TxnStatus c : TxnStatus.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static TxnStatus valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null
      • isAlive

        public boolean isAlive()
        Checks if the Txn still is active/prepared.
        Returns:
        true if the TxnStatus is active or prepared.