Package org.datanucleus.api.jdo

Class JDOSequence

java.lang.Object
org.datanucleus.api.jdo.JDOSequence
All Implemented Interfaces:
javax.jdo.datastore.Sequence, org.datanucleus.store.NucleusSequence
public class JDOSequence extends Object implements javax.jdo.datastore.Sequence, org.datanucleus.store.NucleusSequence
Basic generic implementation of a JDO2 datastore sequence. Wraps a NucleusSequence.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected org.datanucleus.store.NucleusSequence
    sequence
    Underlying NucleusSequence.

  • Constructor Summary

    Constructors
    Constructor
    Description
    JDOSequence(org.datanucleus.store.NucleusSequence seq)
    Constructor.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    allocate(int additional)
    Method to allocate a set of elements.
    Object
    current()
    Accessor for the current element.
    long
    currentValue()
    Accessor for the current element in the sequence as a long.
    String
    getName()
    Accessor for the sequence name.
    Object
    next()
    Accessor for the next element in the sequence.
    long
    nextValue()
    Accessor for the next element in the sequence as a long.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • sequence

      protected org.datanucleus.store.NucleusSequence sequence
      Underlying NucleusSequence.

  • Constructor Details

    • JDOSequence

      public JDOSequence(org.datanucleus.store.NucleusSequence seq)
      Constructor.
      Parameters:
      seq - Underlying sequence

  • Method Details

    • getName

      public String getName()
      Accessor for the sequence name.
      Specified by:
      getName in interface org.datanucleus.store.NucleusSequence
      Specified by:
      getName in interface javax.jdo.datastore.Sequence
      Returns:
      The sequence name

    • allocate

      public void allocate(int additional)
      Method to allocate a set of elements.
      Specified by:
      allocate in interface org.datanucleus.store.NucleusSequence
      Specified by:
      allocate in interface javax.jdo.datastore.Sequence
      Parameters:
      additional - The number of additional elements to allocate

    • next

      public Object next()
      Accessor for the next element in the sequence.
      Specified by:
      next in interface org.datanucleus.store.NucleusSequence
      Specified by:
      next in interface javax.jdo.datastore.Sequence
      Returns:
      The next element

    • nextValue

      public long nextValue()
      Accessor for the next element in the sequence as a long.
      Specified by:
      nextValue in interface org.datanucleus.store.NucleusSequence
      Specified by:
      nextValue in interface javax.jdo.datastore.Sequence
      Returns:
      The next element
      Throws:
      javax.jdo.JDODataStoreException - Thrown if not numeric

    • current

      public Object current()
      Accessor for the current element.
      Specified by:
      current in interface org.datanucleus.store.NucleusSequence
      Specified by:
      current in interface javax.jdo.datastore.Sequence
      Returns:
      The current element.

    • currentValue

      public long currentValue()
      Accessor for the current element in the sequence as a long.
      Specified by:
      currentValue in interface org.datanucleus.store.NucleusSequence
      Specified by:
      currentValue in interface javax.jdo.datastore.Sequence
      Returns:
      The current element
      Throws:
      javax.jdo.JDODataStoreException - Thrown if not numeric