Class ValueGenerationBlock<T>

java.lang.Object
org.datanucleus.store.valuegenerator.ValueGenerationBlock<T>
Type Parameters:
T - Type of the value (String, Long etc)
All Implemented Interfaces:
Serializable
public class ValueGenerationBlock<T> extends Object implements Serializable
Representation of a block of values.
See Also:

  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      See Also:

    • nextIndex

      private int nextIndex
      The next id position.

    • valueList

      private final List<T> valueList
      The list of values in this block.

  • Constructor Details

    • ValueGenerationBlock

      public ValueGenerationBlock(T[] values)
      Constructor.
      Parameters:
      values - The block of objects that will be considered the "values"

    • ValueGenerationBlock

      public ValueGenerationBlock(List<T> oid)
      Constructor.
      Parameters:
      oid - The list of objects that will be considered the "values"

  • Method Details

    • current

      public T current()
      Accessor for the current value.
      Returns:
      The current value
      Throws:
      NoSuchElementException - Thrown if no current value

    • next

      public T next()
      Accessor for the next value, or null if block values exhausted
      Returns:
      The next value

    • hasNext

      public boolean hasNext()
      Accessor for whether there are more values remaining in the block.
      Returns:
      True when has more values

    • addBlock

      public void addBlock(ValueGenerationBlock<T> block)
      Method to append a block onto this block. This is used where we have some values left, and we want to allocate more to go into this block.
      Parameters:
      block - The other block

    • toString

      public String toString()
      Stringify method.
      Overrides:
      toString in class Object
      Returns:
      A string version of this object