org.datanucleus.store.valuegenerator

Class AbstractDatastoreGenerator<T>

java.lang.Object

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

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

All Implemented Interfaces:

ValueGenerator<T>

public abstract class AbstractDatastoreGenerator<T>
extends AbstractGenerator<T>

Abstract representation of a ValueGenerator for a datastore. Builds on the base AbstractValueGenerator, and providing datastore connection and StoreManager information.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractDatastoreGenerator.ConnectionPreference

Field Summary

Fields

Modifier and Type	Field and Description
protected ValueGenerationConnectionProvider	connectionProvider The means of connecting to the datastore (if required by the generator).
protected StoreManager	storeMgr Manager for the datastore.

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
AbstractDatastoreGenerator(String name, Properties props) Constructor.

Method Summary

Modifier and Type	Method and Description
AbstractDatastoreGenerator.ConnectionPreference	getConnectionPreference() Accessor for any requirement for connection used by this value generator.
void	setConnectionProvider(ValueGenerationConnectionProvider provider) Mutator for setting the connection provider.
void	setStoreManager(StoreManager storeMgr) Method to set the StoreManager to be used.

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

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

Methods inherited from class java.lang.Object

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

Field Detail

storeMgr

protected StoreManager storeMgr

Manager for the datastore.

connectionProvider

protected ValueGenerationConnectionProvider connectionProvider

The means of connecting to the datastore (if required by the generator).

Constructor Detail

AbstractDatastoreGenerator

public AbstractDatastoreGenerator(String name,
                                  Properties props)

Constructor.

Parameters:

name - Symbolic name for the generator

props - Properties controlling the behaviour of the generator

Method Detail

setStoreManager

public void setStoreManager(StoreManager storeMgr)

Method to set the StoreManager to be used.

Parameters:

storeMgr - The Store Manager

setConnectionProvider

public void setConnectionProvider(ValueGenerationConnectionProvider provider)

Mutator for setting the connection provider.

Parameters:

provider - The connection provider.

getConnectionPreference

public AbstractDatastoreGenerator.ConnectionPreference getConnectionPreference()

Accessor for any requirement for connection used by this value generator. EXISTING means use the same connection as the ExecutionContext is using. NEW means use a new connection, and commit it after any operation. NONE means use NEW and allow override by the persistence property "datanucleus.valuegeneration.transactionAttribute".

Returns:

The connection preference