org.datanucleus.store.valuegenerator
Class AbstractUIDGenerator

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

All Implemented Interfaces:

ValueGenerator

Direct Known Subclasses:

AbstractUUIDGenerator, AUIDGenerator, UUIDGenerator

public abstract class AbstractUIDGenerator
extends AbstractGenerator

Value generator for a UID format. To be extended by implementations giving the UID in particular forms.

Field Summary

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

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

Constructor Summary

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

Method Summary

protected abstract java.lang.String	getIdentifier() Create an identifier in the UID format required.
static java.lang.Class	getStorageClass() Accessor for the storage class for values generated with this generator.
protected ValueGenerationBlock	reserveBlock(long size) Method to reserve "size" values to the block.

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

allocate, createRepository, current, currentValue, getName, 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

AbstractUIDGenerator

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

Constructor.

Parameters:

name - Symbolic name for this generator

props - Properties controlling its behaviour

Method Detail

getStorageClass

public static java.lang.Class getStorageClass()

Accessor for the storage class for values generated with this generator.

Returns:

Storage class (in this case String.class)

reserveBlock

protected ValueGenerationBlock reserveBlock(long size)

Method to reserve "size" values to the block.

Specified by:

reserveBlock in class AbstractGenerator

Parameters:

size - The block size

Returns:

The reserved block

getIdentifier

protected abstract java.lang.String getIdentifier()

Create an identifier in the UID format required.

Returns:

The identifier