org.neo4j.kernel.impl.persistence
Interface PersistenceSource

All Known Implementing Classes:

NioNeoDbPersistenceSource

public interface PersistenceSource

A data resource that Neo4j kernel uses to persist entities.

All persistence sources for the kernel should implement this interface.

Method Summary

NeoStoreTransaction	createTransaction(XaConnection connection) Creates a resource connection to this persistence source.
long	getHighestPossibleIdInUse(Class<?> clazz)
long	getNumberOfIdsInUse(Class<?> clazz)
XaDataSource	getXaDataSource()
long	nextId(Class<?> clazz) If the persistence source is responsible for id generation it must implement this method.

Method Detail

createTransaction

NeoStoreTransaction createTransaction(XaConnection connection)

Creates a resource connection to this persistence source.

Parameters:

connection - the XaConnection to use.

Returns:

a newly opened NeoStoreTransaction to this PersistenceSource

nextId

long nextId(Class<?> clazz)

If the persistence source is responsible for id generation it must implement this method.

Parameters:

clazz - the data structure to get next free unique id for

Returns:

the next free unique id for clazz

getHighestPossibleIdInUse

long getHighestPossibleIdInUse(Class<?> clazz)

getNumberOfIdsInUse

long getNumberOfIdsInUse(Class<?> clazz)

getXaDataSource

XaDataSource getXaDataSource()