org.datanucleus

Interface NucleusContext

All Known Subinterfaces:

PersistenceNucleusContext, StoreNucleusContext

All Known Implementing Classes:

AbstractNucleusContext, EnhancementNucleusContextImpl, PersistenceNucleusContextImpl

public interface NucleusContext

Representation of the context being run within DataNucleus. Provides basic services that can be used by all DataNucleus contexts.

• properties defining configuration for persistence.
• manages the plugins involved in this DataNucleus context
• provides access to the API in use
• manages metadata for persistable classes
• provides access to the TypeManager, defining the behaviour for java types.

Method Summary

Modifier and Type	Method and Description
void	applyDefaultProperties(Configuration conf) Method called when initialising the Configuration to load up defaults for the properties appropriate for this NucleusContext.
void	close() Clear out resources for the supported services.
ApiAdapter	getApiAdapter()
String	getApiName() Accessor for the name of the API (JDO, JPA, etc).
ClassLoaderResolver	getClassLoaderResolver(ClassLoader primaryLoader) Accessor for a ClassLoaderResolver to use in resolving classes.
Configuration	getConfiguration()
MetaDataManager	getMetaDataManager()
PluginManager	getPluginManager()
TypeManager	getTypeManager()
void	initialise() Method to initialise the context for use.
boolean	supportsORMMetaData()

Method Detail

applyDefaultProperties

void applyDefaultProperties(Configuration conf)

Method called when initialising the Configuration to load up defaults for the properties appropriate for this NucleusContext.

Parameters:

conf - The configuration

initialise

void initialise()

Method to initialise the context for use. If any services are considered essential for operation then they will be enabled here, otherwise left for lazy initialisation.

close

void close()

Clear out resources for the supported services.

getApiAdapter

ApiAdapter getApiAdapter()

getApiName

String getApiName()

Accessor for the name of the API (JDO, JPA, etc).

Returns:

the api

getConfiguration

Configuration getConfiguration()

getPluginManager

PluginManager getPluginManager()

getMetaDataManager

MetaDataManager getMetaDataManager()

getTypeManager

TypeManager getTypeManager()

getClassLoaderResolver

ClassLoaderResolver getClassLoaderResolver(ClassLoader primaryLoader)

Accessor for a ClassLoaderResolver to use in resolving classes. Caches the resolver for the specified primary loader, and hands it out if present.

Parameters:

primaryLoader - Loader to use as the primary loader (or null)

Returns:

The ClassLoader resolver

supportsORMMetaData

boolean supportsORMMetaData()