org.datanucleus.store.valuegenerator

Class AbstractUIDGenerator

java.lang.Object

org.datanucleus.store.valuegenerator.AbstractGenerator<String>

org.datanucleus.store.valuegenerator.AbstractUIDGenerator

All Implemented Interfaces:

ValueGenerator<String>

Direct Known Subclasses:

AbstractUUIDGenerator, AUIDGenerator, UUIDGenerator

public abstract class AbstractUIDGenerator
extends AbstractGenerator<String>

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, name, properties, repositoryExists

Constructor Summary

Constructors

Constructor and Description
AbstractUIDGenerator(String name, Properties props) Constructor.

Method Summary

Modifier and Type	Method and Description
protected abstract String	getIdentifier() Create an identifier in the UID format required.
static Class	getStorageClass() Accessor for the storage class for values generated with this generator.
protected ValueGenerationBlock<String>	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(String name,
                            Properties props)

Constructor.

Parameters:

name - Symbolic name for this generator

props - Properties controlling its behaviour

Method Detail

getStorageClass

public static Class getStorageClass()

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

Returns:

Storage class (in this case String.class)

reserveBlock

protected ValueGenerationBlock<String> reserveBlock(long size)

Method to reserve "size" values to the block.

Specified by:

reserveBlock in class AbstractGenerator<String>

Parameters:

size - The block size

Returns:

The reserved block

getIdentifier

protected abstract String getIdentifier()

Create an identifier in the UID format required.

Returns:

The identifier