org.datanucleus.store.valuegenerator
Class TimestampValueGenerator

java.lang.Object
  org.datanucleus.store.valuegenerator.AbstractGenerator
      org.datanucleus.store.valuegenerator.TimestampValueGenerator

All Implemented Interfaces:

ValueGenerator

public class TimestampValueGenerator
extends AbstractGenerator

Value generator for timestamp values (millisecs). The "timestamps" are the number of milliseconds (since Jan 1 1970).

Field Summary

Fields inherited from class org.datanucleus.store.valuegenerator.AbstractGenerator

allocationSize, block, initialValue, LOCALISER, name, properties, repositoryExists

Constructor Summary

TimestampValueGenerator(java.lang.String name, java.util.Properties props)
Constructor.

Method Summary

protected ValueGenerationBlock

reserveBlock(long size) Method to reserve a block of values.

Methods inherited from class org.datanucleus.store.valuegenerator.AbstractGenerator

allocate, createRepository, current, currentValue, getName, getStorageClass, next, nextValue, obtainGenerationBlock, obtainGenerationBlock, repositoryExists, requiresRepository, reserveBlock

Methods inherited from class java.lang.Object

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

Constructor Detail

TimestampValueGenerator

public TimestampValueGenerator(java.lang.String name,
                               java.util.Properties props)

Constructor.

Parameters:

name - Symbolic name of the generator

props - Any properties controlling its behaviour.

Method Detail

reserveBlock

protected ValueGenerationBlock reserveBlock(long size)

Method to reserve a block of values. Only ever reserves a single timestamp, to the time at which it is created.

Specified by:

reserveBlock in class AbstractGenerator

Parameters:

size - Number of elements to reserve.

Returns:

The block.