org.datanucleus.store.xml.valuegenerator

Class GenerateIDGenerator

java.lang.Object

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

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

org.datanucleus.store.xml.valuegenerator.GenerateIDGenerator

All Implemented Interfaces:

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

public class GenerateIDGenerator
extends org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator<String>

Value generator for calling xpath generate-id().

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator

org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator.ConnectionPreference

Field Summary

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

connectionProvider, storeMgr

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

allocationSize, block, initialValue, name, properties, repositoryExists

Fields inherited from interface org.datanucleus.store.valuegenerator.ValueGenerator

PROPERTY_CATALOG_NAME, PROPERTY_CLASS_NAME, PROPERTY_COLUMN_NAME, PROPERTY_FIELD_NAME, PROPERTY_KEY_CACHE_SIZE, PROPERTY_KEY_DATABASE_CACHE_SIZE, PROPERTY_KEY_INITIAL_VALUE, PROPERTY_KEY_MAX_VALUE, PROPERTY_KEY_MIN_VALUE, PROPERTY_ROOT_CLASS_NAME, PROPERTY_SCHEMA_NAME, PROPERTY_SEQUENCE_NAME, PROPERTY_SEQUENCETABLE_CATALOG, PROPERTY_SEQUENCETABLE_NAME_COLUMN, PROPERTY_SEQUENCETABLE_NEXTVAL_COLUMN, PROPERTY_SEQUENCETABLE_SCHEMA, PROPERTY_SEQUENCETABLE_TABLE, PROPERTY_TABLE_NAME

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected org.datanucleus.store.valuegenerator.ValueGenerationBlock<String>	reserveBlock(long size) Method to reserve a block of values.

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

getConnectionPreference, setConnectionProvider, setStoreManager

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

GenerateIDGenerator

public GenerateIDGenerator(String name,
                           Properties props)

Constructor.

Parameters:

name - Symbolic name of the generator

props - Any properties controlling its behaviour.

Method Detail

reserveBlock

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

Parameters:

size - Number of elements to reserve.

Returns:

The block.