Class DuplicateKey

  • All Implemented Interfaces:
    java.io.Serializable

    public class DuplicateKey
    extends DatabaseException
    A ObjectIndex throws a DuplicateKey when a key being added to the index is identical to a key already stored there. Each concrete index class determines the circumstances under which this exception is thrown. For example, a BTreeIndex will throw DuplicateKey when a call to the insertKey method finds an existing key that matches the insertion key; however, the BTreeIndex.writeKey method does not throw an exception for a duplicate key, instead replacing the record position associated with the extant key.

    See Also:
    ObjectIndex, BTreeIndex, Serialized Form
    • Constructor Summary

      Constructors 
      Constructor Description
      DuplicateKey()
      Constructs a new DuplicateKey with null as its error message string.
      DuplicateKey​(java.lang.String message)
      Constructs a new DuplicateKey with message as its error message string.
    • Method Summary

      • Methods inherited from class java.lang.Throwable

        addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
    • Constructor Detail

      • DuplicateKey

        public DuplicateKey()
        Constructs a new DuplicateKey with null as its error message string.
      • DuplicateKey

        public DuplicateKey​(java.lang.String message)
        Constructs a new DuplicateKey with message as its error message string.
        Parameters:
        message - Error message string.