org.datanucleus.store.valuegenerator

Class AbstractConnectedGenerator<T>

java.lang.Object

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

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

All Implemented Interfaces:

ValueGenerator<T>

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

Abstract representation of a ValueGenerator requiring a connection to a datastore. Builds on the base AbstractGenerator, providing datastore connection information. TODO Remove "properties" and pass in class+member so we can extract the precise definition for this generator directly

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractConnectedGenerator.ConnectionPreference

Field Summary

Fields

Modifier and Type	Field and Description
protected ValueGenerationConnectionProvider	connectionProvider The means of connecting to the datastore.
protected Properties	properties Properties controlling the value generator behaviour.

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

allocationSize, block, initialValue, name, storeMgr

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
AbstractConnectedGenerator(StoreManager storeMgr, String name, Properties props) Constructor.

Method Summary

Modifier and Type	Method and Description
AbstractConnectedGenerator.ConnectionPreference	getConnectionPreference() Accessor for any requirement for connection used by this value generator.
void	setConnectionProvider(ValueGenerationConnectionProvider provider) Mutator for setting the connection provider.

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

allocate, current, currentValue, getName, next, nextValue, obtainGenerationBlock, obtainGenerationBlock, reserveBlock, reserveBlock

Methods inherited from class java.lang.Object

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

Field Detail

connectionProvider

protected ValueGenerationConnectionProvider connectionProvider

The means of connecting to the datastore.

properties

protected Properties properties

Properties controlling the value generator behaviour.

Constructor Detail

AbstractConnectedGenerator

public AbstractConnectedGenerator(StoreManager storeMgr,
                                  String name,
                                  Properties props)

Constructor.

Parameters:

storeMgr - Store Manager

name - Symbolic name for the generator

props - Properties controlling the behaviour of the generator

Method Detail

setConnectionProvider

public void setConnectionProvider(ValueGenerationConnectionProvider provider)

Mutator for setting the connection provider.

Parameters:

provider - The connection provider.

getConnectionPreference

public AbstractConnectedGenerator.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