org.openspaces.persistency.hibernate
Class StatelessHibernateSpaceDataSource

java.lang.Object
  com.gigaspaces.datasource.SpaceDataSource
      org.openspaces.persistency.patterns.ManagedEntriesSpaceDataSource
          org.openspaces.persistency.hibernate.AbstractHibernateSpaceDataSource
              org.openspaces.persistency.hibernate.StatelessHibernateSpaceDataSource

public class StatelessHibernateSpaceDataSource
extends AbstractHibernateSpaceDataSource

A SpaceDataSource implementation based on Hibernate StatelessSession.

Note, stateless session is much faster than regular Hibernate session, but at the expense of not having a first level cache, as well as not performing any cascading operations (both in read operations as well as dirty operations).

Since:

9.5

Author:

eitany

Field Summary

Fields inherited from class org.openspaces.persistency.hibernate.AbstractHibernateSpaceDataSource

logger

Constructor Summary

StatelessHibernateSpaceDataSource(org.hibernate.SessionFactory sessionFactory, Set<String> managedEntries, int fetchSize, boolean performOrderById, String[] initialLoadEntries, int initialLoadThreadPoolSize, int initialLoadChunkSize, boolean useScrollableResultSet)

Method Summary

DataIterator	getDataIterator(DataSourceQuery query) Returns a StatelessListQueryDataIterator for the given query.
DataIterator	initialDataLoad() Performs the initial load operation.

Methods inherited from class org.openspaces.persistency.hibernate.AbstractHibernateSpaceDataSource

createInitialLoadIterator, getFetchSize, getInitialLoadChunkSize, getInitialLoadEntries, getManagedEntries, getSessionFactory, isManagedEntry, isPerformOrderById, isUseScrollableResultSet, supportsInheritance

Methods inherited from class com.gigaspaces.datasource.SpaceDataSource

getById, getDataIteratorByIds, initialMetadataLoad

Methods inherited from class java.lang.Object

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

Constructor Detail

StatelessHibernateSpaceDataSource

public StatelessHibernateSpaceDataSource(org.hibernate.SessionFactory sessionFactory,
                                         Set<String> managedEntries,
                                         int fetchSize,
                                         boolean performOrderById,
                                         String[] initialLoadEntries,
                                         int initialLoadThreadPoolSize,
                                         int initialLoadChunkSize,
                                         boolean useScrollableResultSet)

Method Detail

initialDataLoad

public DataIterator initialDataLoad()

Performs the initial load operation. Iterates over the #setInitialLoadEntries(String[]) inital load entries. If AbstractHibernateSpaceDataSource.getInitialLoadChunkSize() is set to -1, will use StatelessScrollableDataIterator for each entity. If AbstractHibernateSpaceDataSource.getInitialLoadChunkSize() is set to a non -1 value, will use the StatelessChunkScrollableDataIterator.

Overrides:

initialDataLoad in class SpaceDataSource

Returns:

A DataIterator instance which contains all data to be written to Space upon its initialization - null is treated as an empty iterator.

getDataIterator

public DataIterator getDataIterator(DataSourceQuery query)

Returns a StatelessListQueryDataIterator for the given query.

Overrides:

getDataIterator in class SpaceDataSource

Parameters:

query - The DataSourceQuery to get results for.

Returns:

A DataIterator instance contains results for the provided DataSourceQuery.